high voltage converters viperplus & altair · advanced controller with embedded 800v power...
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High Voltage Converters
VIPerPLUS & Altair
STMicroelectronics
Viper*6 family deep technical overview
Viper and Altair portfolio overview
New members: Viper0P and Viper01x
Altair family features
Bonus: Isolated DC/DC
eDesignSuite demo
Agenda 2
Viper*6 family
VIPer*6 family: content 4
products features
applications
evaluation boards
typical circuitsVIPer*6
family
VIPer*6 family 5
products features
applications
evaluation boards
typical circuitsVIPer*6
family
Never so easy to design
Switch Mode Power Supply6
VIPerPlus - high voltage converter
Advanced controller with embedded 800V Power MOSFET
Robustness and Reliability
800V Power MOSFET, thermal shutdown, soft start, OLP protection, auto-restart
Energy saving
Power consumption less than 30mW at no load
High integration
Direct feedback, jittering, HV start-up
Flexibility
power scalability up to 12W, no aux winding, clamp-less design, no CM EMC filter
Output
rectification and
filtering
Input
rectification and
filtering
Feedback
..directly
from AC Mains
voltage...
.. to +/- DC bus
(3V3, 5V, 12V)
to supply:
~
Microcontroller
PWM driver
Relay
PWM
Controller
OLP
LOGIC
+
-
E/A
VDD
GND
+
-
PWM
Oscillator
LEB
BURST-MODE
Logic
TURN-ON
LOGIC
SOFT START
UVLO
BURST
OTP
LIM
VCOMPL
HV_ONSUPPLY
&
UVLO
IDDch
VREF_FB
THERMAL
SHUTDOWN
DRAIN
+
-
OCP
IDLIMset-up
S
R
Q
Burst
RSENSE
OTP
Internal Supply BUS &
REFERENCE VOLTAGES
COMP
FB
High Voltage START-UPEnabled during the start-up and every time
VDD voltage is lower than 9.5V (min).
Enables design without auxiliary winding
800V AR Power MOSFETsenseFET +
thermal sensor +
current sense resistor
PWM comparatorFor cycle by cycle turn-off
OCP comparatorOverload protection (IDLIM)
works in parallel with PWM
comparator
3V3 reference voltage Embedded E/A for direct
feedback with resistor from
the output
Jittered oscillatorThree frequency option:
30,60 and 115 kHz with
Jittering +/-6%
E/A compensationand/or OPTO-COUPLER input only
for isolated solution
OCP comparator
threshold setting
Short circuit protection:In case of overload, alternate 50ms ON / 1sec OFF
VIPer06
4W
7VIPer*6 family: block diagram
VIPer*6 family
Pout @ 85-265Vac
VIPer16
6W
VIPer26
12WVIPerA16
6W
VIPer*6 family
products features
applications
evaluation boards
typical circuitsVIPer*6
family
8
VIPer*6 in the applications 9
Home
Appliances
Metering Home
Automation
Lighting Automotive
VIPer*6 family Fixed frequency AC/DC converters
VIPer06, VIPer16, VIPerA16, VIPer26
The best partner to power your microcontroller
VIPer*6 for Metering 10
30kHz switching frequency to reduce noise in
the communication band (only VIPer06)
800V breakdown
Op-amp available for primary regulation
Flyback topology
Isolated
with primary regulation
VIPer*6in
smart energy meter
Isolated solution for
3 phase meter
Not isolated solution for
Single phase meter
Reduced noise
in the communication
bandRobustness
Aux SMPS
market needs
VIPer*6 based
AC/DC auxiliary power supply for
Inductor based
topology
Buck
VIPer*6, key benefits
& topologies supported
- microcontrollers
- transceivers
- metrology ICs
VIPer*6,
key benefits for the application
VIPer*6 for Home Appliances 11
Frequency jittering
VIPer*6 pin to pin compatible
800V breakdown
Self supply
Op-amp available for
primary regulation or
direct feedback
Isolated
primary regulation
secondary regulation
Buck
common neutral
Not isolated
direct feedback,
positive/negative output,
common neutral
Smart Flyback topologies
Buck-Boost
negative output,
common neutral
Small EMI input filterPower
scalability Reduced sizeHigh
efficiency
Aux SMPS
market
needs
VIPer*6
in home
appliances
Small Home Appliances Major Appliances
Inductor based
topologies
VIPer*6,
key benefits
& supported
topologies
VIPer*6 based
AC/DC auxiliary power supply for
- microcontrollers
- LEDs
- user interfaces
- motor driver ICs
Clamp-lessPowering MCU
to drive TRIAC
VIPer*6,
key benefits for
the application
VIPer*6 for Home Automation 12
30mW @ no load
Frequency jittering
800V breakdown
Self supply
Op-amp available
for direct feedback
Smart Flyback topologies
Not isolated, direct feedback,
positive/negative output, common neutral
Cost savingCap SMPS
replacement
Low
stand-by power ReliabilitySmall EMI input filter
Aux SMPS
market needs
VIPer*6
in home
automation
shutters control light
climate
Security systems
smart plug
Inductor based
topology
Buck
VIPer*6, key benefits
& topologies supported
VIPer*6 based
AC/DC auxiliary power supply for
- microcontrollers
- transceivers
- sensors
- motor driver ICsSafety systems
VIPer*6,
key benefits for
the application
Powering MCU
to drive TRIAC
VIPer*6 for Lighting 13
30mW @ no load
Operating temperature:
-25°C to +125°C
800V breakdown
Self supply
Op-amp available for
primary regulation
Isolated
with primary regulation
Smart Flyback
topologies
Robustness Reduced sizeCost saving
Isolated
with secondary regulation
Inductor based
topology
Buck
VIPer*6 based
AC/DC auxiliary power supply for
- microcontrollers
- transceivers
- lighting driver ICs
Aux SMPS
market
needs
VIPer*6,
key benefits
& supported
topologies
VIPer*6
in
street lighting
High
efficiencyLow
stand-by power
VIPer*6,
key benefits for
the application
14VIPerA16 for Automotive
AEQ100 compliant
Operating temperature: -40°C to +125°C
800V breakdown
Op-amp available for direct feedback
DC-DC conversion Strong thermal robustness Reliability
Li-Ion
Battery
pack
14V-15V
Aux SMPS
market needs
VIPerA16
in automotive
hybrid / EV control
VIPerA16 - Automotive grade 1,
key benefits for the application
VIPerA16 Key benefits
& topologies supported
HV DC/DC aux SMPS based on VIPerA16 for
- Li-Ion battery monitoring and cell balancing system
- DC-DC conversion to generate 12V/24V needs to subsystems
Isolated
primary regulation
secondary regulation
Not isolated
direct feedback
Smart Flyback topologies
200V-400V
12V -15V
- Contact to ST office for further info on VIPerA16 -
VIPer*6 family
products features
applications
evaluation boards
typical circuitsVIPer*6
family
15
16VIPer*6: isolated Flyback
Primary regulation Secondary regulation Secondary regulation
Perfect trade-off amongst
isolation, cost and output regulationStandard topology without aux winding
(VIPer self supply)
Isolated auxiliary SMPS
Standard topology
with the lowest stand-by consumption
17VIPer*6: not isolated Flyback(1/2)
NOT isolated auxiliary SMPS
Direct feedback Direct feedback
Minimal components count Minimal components count
with the lowest stand-by consumption
(Vout ≥ 12V)
18VIPer*6: not isolated Flyback(2/2)
NOT isolated auxiliary SMPS
Direct feedback Secondary regulation
+7V and -5V: outputs referred to neutral
with lowest stand-by consumption
+12V and -5V: outputs referred to neutral
with lowest stand-by consumption
Configurations with positive and negative outputs
19VIPer*6: inductor based topologies
Buck Buck-Boost with negative output
Powering a MCU able to drive a TRIACSimplicity and minimum size guaranteed
NOT isolated auxiliary SMPS
VIPer*6 family
products features
applications
evaluation boards
typical circuitsVIPer*6
family
20
21VIPer*6 based solutions(1/3)
STEVAL-ISA010V1
1.8W Super wide range
Buck converter
based on VIPer16LN
(dual outputs referred to neutral)
Vin = 85-500 Vac
Vout1 = 12V
Vout2 = 5V
IoutTOT= 150mA
Standby= 96mW @230Vac
AN2872
STEVAL-ISA096V1
2W Buck-Boost converter
based on VIPer06XS
(negative output referred to neutral)
Vin = 85-264 Vac
Vout = -12V
Iout= 150mA
Efficiency = 80%@230Vac (full load)
Standby< 30mW @264Vac
UM1470
Vin = 90-265 Vac
Vout = 12V
Iout = 150mA
AN4260 (*)
STEVAL-ISA115V1 (*)
1.8W Buck converter
based on VIPer06XN
(output referred to neutral)
Vin = 90-265 Vac
Vout = 12V
Iout = 140mA
Efficiency = 82.6% @85Vac (full load)
DN0009
STEVAL-ISA130V1 (*)
1.7 W Buck converter
based on VIPer06X
(output referred to neutral)
Solutions up to 2W(*) Available on request
22VIPer*6 based solutions(2/3)
Vin = 90-265 Vac
Vout = 16V
Iout = 280mA
Efficiency > 81% @230Vac (full load)
AN3028
STEVAL-ISA118V1
4.5W Not isolated Flyback converter
based on VIPer16LN
(direct feedback)
STEVAL-ISA112V1
STEVAL-ISA113V1
4.2W Not isolated Flyback converter
based on VIPer06HN / VIPer06HS
(direct feedback)
Vin = 90-265 Vac
Vout = 12V
Iout= 350mA
Efficiency 83%@115V (full load)
Standby<28.5mW@264Vac
AN4116,
AN4164
STEVAL-ISA071V2
4W Not isolated Flyback converter
based on VIPer16L
(direct feedback, dual outputs
referred to neutral)
Vin = 85-264 Vac
Vout1 = +7V
Iout1 = 160mA
Vout2 = -5V
Iout2= 400mA
Standby= 35mW @230Vac
UM0920
Solutions up to 4.5 W(*) Available on request
Vin = 90-265 Vac
Vout = 12V
Iout = 350mA
AN4259 (*)
STEVAL-ISA117V1 (*)
4.2W Isolated Flyback converter
based on VIPer16LN
(secondary regulation)
23VIPer*6 based solutions(3/3)
Vin = 90-265 Vac
Vout = 12V
Iout = 1A
Average efficiency @115Vac:
83.4% (115kHz), 87% (60kHz)
AN4106,
AN4165 (*)
STEVAL-ISA110V1 (*)
STEVAL-ISA111V1
12W Not isolated Flyback converter
based on VIPer26LN
(direct feedback;
60kHz, 115kHz version)
Vin = 85-305 Vac
Vout 1= 12V
Vout 2 = 3.3V
Iout 1= 900mA
Iout2= 100mA
Efficiency = 84% @230Vac (full load)
UM0984
STEVAL-ISA081V1
12W Isolated Flyback converter
based on VIPer16LND
(primary regulation)
Solutions up to 12 W
Vin = 85-305 Vac
Vout 1= 16V
Vout 2 = 5V
Iout 1= 300mA
Iout2= 15mA
AN draft (*)
STEVAL-ISA116V1 (*)
5W Buck converter
based on VIPer26LD
(*) Available on request
VIPerPLUS & Altair
STMicroelectronics
VIPerPlus & Altair: where every mW counts
More than 10 years ago, ST launched the first series of
VIPer® (Vertical Intelligent Power enhanced regulator)
high-voltage converters from the mains
Today, PSUs must provide advanced performance,
and energy-saving regulations require greater efficiency
VIPerPlus & Altair meets the challenge:
• combining an 800V or 900V(Altair) avalanche rugged power
section with state-of-the art PWM circuitry for control
• offering a comprehensive set of features and built-in
protections
The result is an SMPS design that meets most demanding
energy saving regulations and is reliable, flexible and, with
component count halved, less expensive
2
Family Portrait
Features
High Voltage ConverterVIPerPlus / Altair
PWM
Controller
VIPer*7
VIPer*8
VIPer*5
VIPer*6
Altair0*
Quasi resonant flyback with Brown-out
Jittered frequency flyback, buck, buck boost
Jittered Frequency flyback with Peak Power
Quasi resonant PSR flyback
Jittered Frequency flyback with Brown-out
Diffe
rent contr
ol s
ections
3
VIPer*1 Jittered frequency flyback, buck, buck boost – Minimal BOM
VIPer*P Jittered frequency flyback, buck, buck boost – Zero Power Mode
27
VIPer25 VIPer35
VIPer*7
VIPer*8
VIPer*5
VIPer*6
Different MOSFET size for different out power capabilities
10W 16W 20W
SSO10
DIP-7
SO16N
DIP-7
SO16N
DIP-7
SO16N (VIPer35)
SDIP10
@Vin: 230VAC±20% 8W
POWER MOSFET
6W 12W 15W4W@Vin: 85-265 VAC
PACKAGES
VBVDSS 800V
RDSON 32W
IDLIM 350mA
RDSON 24W
IDLIM 400mA
RDSON 7WIDLIM 700mA
RDSON 4.5WIDLIM 1A
10W
SO16N
7W
RDSON 19W
IDLIM 400mA
VBVDSS 900V
10W
SO16N
8W
RDSON 14W
IDLIM 400mA
VBVDSS 800V
Altair0*
VIPer06 VIPer16 VIPer26
VIPer17 VIPer27 VIPer37
VIPer28 VIPer38
Altair 04 Altair 05
Family Portrait
Power
VIPer*P VIPer0P1)
VIPer01VIPer*1
1)RDS_ON max = 20Ω
Constant Current Regulation
Differentiation 28
Brown out
Extra Power Timer (peak power)
Output OVP
Double level OCP
Embedded Error Amplifier
No need for auxiliary winding
Feedback disconnection
Quasi Resonant
Fixed Freq. (30,60 or 115KHz)
PWM current mode
Burst Mode
Soft start up
Thermal shutdown
Over load protection
Automatic restart after fault
Feed forward compensation
VIPer
*6
VIPer
*7
VIPer
*8
Jittering
VIPer
*5
Altair
Selection by topology
ISOLATED FLYBACK POWER SUPPLY
Primary regulation
Quasi Resonant
CC/CV
Altair
Secondary regulation
High Features
Jittered Fixed Frequency (60-115KHz)
Peak Power
VIPerPLUS
*8
Brown out
VIPerPLUS
*7
Quasi Resonant
Brown out
VIPerPLUS
*5
Minimal BOM
Jittered Fixed
Frequency
VIPerPLUS
*6
NON ISOLATED POWER SUPPLY
Fly Back
VIPerPLUS
*6
Buck
VIPerPLUS
*6
Buck Boost
VIPerPLUS
*6
x is used as a wildcard character for related part number
29
VIPerPLUS
*1
VIPerPLUS
*1
VIPerPLUS
0P
VIPerPLUS
0P
VIPer06 / 16 / A16 / 26: products description 30
• 800V, avalanche rugged power MOSFET
• PWM controller with drain current limit IDlim
• Adjustable current limit,IDlim
• Fixed frequency with Jittering
• high performance for stand-by & efficiency
• No need of auxiliary winding
• Automatic auto restart after faults
• Hysteretic thermal shutdown
• Direct feedback for non isolated SMPS
• Open loop protection
• Automotive grade: VIPerA16
MAIN PARAMETERS Power MOSFET CONTROLLER
Break down voltage [V] 800
RDSon [Ohm]
(resp Viper 06 / 16 / 26)32 / 24 / 7
VDD [V] 9 ÷ 23
FOSC [KHz] 30 (*) / 60 / 115
Max IDlim [mA] 400 / 700
RTHJ-A [°C/W] 80
POUT [W]@ 85-265 VAC 4 / 6 / 12
Main Features Pin description
GND
controller ground / power MOSFET Source
VDD
controller supply voltage / ICHARGE output current
LIM
Current limit set-up, IDlim .
FB
direct voltage feedback (in case of non isolated
SMPS or for primary regulation)
COMP
Compensation network.
Current loop feedback in case of isolated SMPS
N.A.
Not Available for user. (connected to GND)
N.C.
Not Connected
VIPer17 / 27 / 37: products description 31
Main Features
Main parametersMAIN PARAMETERS Power MOSFET CONTROLLER
Break down voltage [V] 800
RDSon [Ohm] 24 / 7 / 4.5
VDD [V] 9 ÷ 23
FOSC [KHz] 60 or 115
Max IDlim [mA] 420 / 740 / 1050
RTHJ-A [°C/W] (1) 50
POUT [W] @ 85-265VAC 6 / 12 / 15
(1) Package SO16N and 100mm2 of Cu
(2) Open Frame
• 800V, avalanche rugged power MOSFET
• PWM controller with drain current limit, IDlim.
• Adjustable current limit, IDlim
• Fixed Frequency with Jittering
• High performance for stand-by & efficiency
• Integrated protections: OVP, OLP, high OCP
• Automatic auto restart after fault
• Hysteretic thermal shutdown
• Brown-out: minimum input voltage is settable
Pin description
*
GND
controller ground / power MOSFET Source
VDD
controller supply voltage / ICHARGE output current
CONT
OVP set-up, IDLIM set-up.
FB
current loop feedback
BR
brown out set-up
N.A.
Not Available for user. (It can be connected to GND)
N.C.
Not Connected
*
VIPer0P – What new..?
Relia
bili
ty
En
erg
y S
avin
g
BO
M s
avin
g
• ENERGY SAVING:
• <5mW @230Vac in ZERO POWER MODE
• 10mW @230Vac in NO LOAD condition
• >60% eff. @ POUT 250mW @ 230Vac
• VCC voltage:
• REDUCED down to 4.5V (min value)
• Operating max value up to 30V
• Embedded E/A
• float E/A ground (pin EAGND)
• low VREF (1.2V)
• Protection:
• flux runaway protection
VIPer0P
32
VCC DRAIN
Supply bus
RSENSE
REGULATOR
4V
THERMAL
SENSOR
(OTP)
PGND
SOFT START
JITTERED
OSCILLATOR
E/A+
-
+-
FB
VFB_REF
PWM
-
+
TURN ON
LOGIC
COMP
OCP
MAX DUTY
UVLO VCC
VCC CLAMP
tOVL filter
S
R
Q
OTP
OCP
-
+
IDLIM reference
LIGHT LOAD PFM
ON OFF
ZERO POWER
LOGIC
disable
HV
Start up
RGVz
IHV
HV DISABLE
LOGIC
ICH*
LEB
EAGND
SGND
PROTECTION
LOGIC
tRESTART
High Voltage START-UPEnabled during the start-up and every time
VDD voltage is lower than 4.5V (min).
Enables design without auxiliary winding
800V AR MOSFETsenseFET +
thermal sensor +
current sense resistor
PWM comparatorFor cycle by cycle turn-off
OCP comparatorOverload protection (IDLIM)
works in parallel with PWM
comparator
1.2V E/A reference
voltage Set the output by
resistor divider
Jittered oscillatorTwo frequency option:
60 and 120 kHz +/-7%
E/A
compensationand/or OPTO-
COUPLER input only
for isolated solution
Protection:In case of overload, alternate 50ms ON / 1sec OFF
In case of OTP restart after 1 sec and check again the temp
ZERO POWER LOGICsleep mode with less of 5mW
consumption controlled by
ON/OFF pins
VIPer0P – block diagram
E/A float groundEasily set negative output
VIPer0P
33
34
Zero Power
State of art solution
SMPS
AC input
~ DC output
LOAD
MCU
SMPSVIPer0P
AC input
~ DC output
LOAD
MCU
Mechanical switch must be used to
have zero power consumption
4 mW1. ZPM is entered by MCU (switching
stop)
2. ZPM is ended by user using tactile
switch (switching restart)
Zero Power Mode (ZPM)
Zero Power
latest solution by VIPer0P
VIPer0P
Zero Power Mode
Forcing OFF pin to ground to enter in ZPM
→ managed by µC
→ de-bounce time is 10ms (tDEB_OFF)
Forcing ON to ground to exit from ZPM
→ managed by user (tactile button)
or µC (touch button)
→ de-bounce time is 20µs (tDEB_ON)
→ soft start-up during restart
In ZPM switching is inhibited, no voltage/power at the output
PIN = 2 mW @ 115VAC
PIN = 4 mW @ 230VAC
The µC is supplied by Viper0P in ZPM
VIPer0P
VOUT
OFF
Power
ONVIPer0P
mC
50kOhm
ON
VBIAS
VCC
DRAIN
Vreg
4V
35
VIPer01 – What new..?
Re
liab
ility
En
erg
y S
avin
g
BO
M s
avin
g
• ENERGY SAVING:
• 15mW @230Vac in NO LOAD condition
• >60% eff. @ POUT 250mW @ 230Vac
• VCC voltage:
• REDUCED down to 4.5V (min value)
• Operating max value up to 30V
• Embedded E/A
• low VREF (1.2V)
• Protection:
• Line or Output Overvoltage protection
• flux runaway protection
VIPer01
36
VIPer01 – block diagramHigh Voltage START-UPEnabled during the start-up and every time
VDD voltage is lower than 4.5V (min).
Enables design without auxiliary winding
800V AR MOSFETsenseFET +
thermal sensor +
current sense resistor
PWM comparatorFor cycle by cycle turn-off
OCP comparatorOverload protection (IDLIM)
works in parallel with PWM
comparator
1.2V E/A reference
voltage Set the output by
resistor divider
Jittered oscillatorTwo frequency option:
60 and 120 kHz +/-7%
E/A compensationand/or OPTO-COUPLER input only
for isolated solution
Protection:In case of overload, alternate 50ms
ON / 1sec OFF
In case of OTP restart after 1 sec and
check again the temp
INPUT LINE or OUTPUT OVP :0.5sec restart time
VIPer01
37
Pulse Frequency Mode if VCOMP<VCOMPL
PIN @ 115VAC = 8mW
PIN @ 230VAC = 10mW
VCOMPL
IDlim_PFM
time
IDRAIN
Normal Mode PFM Mode Normal Mode
VCOMP
≈
The skip cycle mode reduces the consumption
After three skipped cycles, many circuitries are switched off.
VIPer0P VIPer01
38Light Load and No Load
39
Supply voltage: VCC
Viper0P & VIPer01
can be biased through:
1. self-supply
2. output connection (also with VOUT = 5V!)
3. auxiliary winding
VCC
PGND DRAIN
DRAIN
SGND
COMP
EAGND
FB
ON
OFF
DRAIN
DRAIN
N.C.
N.C.
N.C.
N.C.
VIPer0P
VOUT
ICC
VCC
PGND DRAIN
DRAIN
SGND
COMP
EAGND
FB
ON
OFF
DRAIN
DRAIN
N.C.
N.C.
N.C.
N.C.
VIPer0PICC
VAux
ICCchx
VCC
PGND DRAIN
DRAIN
SGND
COMP
EAGND
FB
ON
OFF
DRAIN
DRAIN
N.C.
N.C.
N.C.
N.C.
VIPer0P
1
2
3
VIPer0P VIPer01
39
Soft start-up
Reduced transformer stress
Improved system reliability
Soft start zone with
growing IDLIM valueSteady state
Transient
zone
time
time
IDLIM
8 ms
IDRAIN
VOUT
At VCC=VCCon
VIPer0P VIPer01
40
Altair family: primary side regulation 41
• Cost effective solution
• dedicated CV-CC controller and
optocoupler
• Sense resistor and relevant
dissipation
Standard solution ALTAIR solution
Altair05T-800 Target Applications 42
AC-DC chargers for mobile phones and other hand-held
equipment
Compact SMPS that requires a precise voltage and/or
current regulation
ALTAIR05T-800 Main electrical parameters 43
Main Features
Main parametersMAIN PARAMETERS
Power MOSFET
(SuperMESH)
CONTROLLER
(BCD6S)
Break down voltage [V] 800
RDSon [Ohm] 11
VDD [V] 11.5 ÷ 23
FOSC [KHz] Up to 166 kHz
Restart time during burst mode 500us
RTHJ-A [°C/W] (1) 80
POUT [W] @ 85-265VAC 6
(1) Package SO16N and 100mm2 of Cu
Pin description
800V, avalanche rugged power section
QR current-mode PWM controller in BCD6 technology
Constant voltage and constant current output regulation (CV/CC) with no optocoupler
High performance for stand-by & efficiency
Integrated protections: 2nd OCP, open loop protection (brownout) OLP, high OCP
Automatic auto restart after fault
N.A.
N.A. CDC
SOURCE DRAIN
SOURCE
GND
IREF
ZCD/FB
COMP
Vcc
DRAIN
DRAIN
DRAIN
N.A.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
N.C.
N.A.
N.A. CDC
SOURCE DRAIN
SOURCE
GND
IREF
ZCD/FB
COMP
Vcc
DRAIN
DRAIN
DRAIN
DRAIN
DRAIN
N.A.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
N.C.
SO16
SOURCE: Power section Source
Vcc: Controller supply voltage / ICHARGE output current
GND: Controller ground
IREF: Current loop reference
ZCD/FB: Zero Current Detection, CV regulation, FF
compensation
COMP: Compensation network
CDC: Cable Drop Complensation
DRAIN: Power section Drain
Altair04-900 Target Applications 44
Energy metering SMPS
Power supply for 3-phase input industrial system
ALTAIR04-900 Main electrical parameters 45
Main parameters
900V, avalanche rugged power section
QR current-mode PWM controller in BCD6 technology
Constant voltage and constant current output regulation (CV/CC) with no optocoupler
High performance for stand-by & efficiency
Integrated protections: 2nd OCP, open loop protection (brownout) OLP, high OCP
Automatic auto restart after fault
Main Features
MAIN PARAMETERSPower MOSFET
(SuperMESH)
CONTROLLER
(BCD6S)
Break down voltage [V] 900
RDSon [Ohm] 16
VDD [V] 11.5 ÷ 23
FOSC [KHz] Up to 166 kHz
Restart time during burst mode 500us
RTHJ-A [°C/W] (1) 50
POUT [W] @ 85-265VAC 5
Pin description
SO16
SOURCE: Power section Source
Vcc: Controller supply voltage / ICHARGE output current
GND: Controller ground
IREF: Current loop reference
ZCD/FB: Zero Current Detection, CV regulation, FF
compensation
COMP: Compensation network
DRAIN: Power section Drain
N.A.
N.A. N.A.
SOURCE DRAIN
SOURCE
GND
IREF
ZCD/FB
COMP
Vcc
DRAIN
DRAIN
DRAIN
N.A.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
N.C.
N.A.
N.A.
SOURCE DRAIN
SOURCE
GND
IREF
ZCD/FB
COMP
Vcc
DRAIN
DRAIN
DRAIN
DRAIN
DRAIN
N.A.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
N.C.
Order code p/n Short Description Vin Vout/Iout Document
STEVAL-ISA010V1 VIPER16LN Not isolated buck converter, 60khZ, DIP7 package 85-500Vac 12V±10%, 5V±4%, 150mA AN2872
STEVAL-ISA096V1 VIPER06XS Not isolated buck boost converter, 30khZ, SSO10 package 85-265Vac -12 V / 150mA UM1470
STEVAL-ISA114V1 VIPER06XS Not isolated buck converter, 30khZ, SSO10 package 80-265Vac 5V / 160mA AN4273
STEVAL-ISA115V1 VIPER06XS Not isolated buck converter, 30khZ, SSO10 package 85-265Vac 12V / 150mA AN4260
STEVAL-ISA119V1 VIPER16LD Not isolated buck converter, 60khZ, SO16N package 85-265Vac 12, 5V / 150mA AN4345
STEVAL-ISA130V1 VIPER06XN Not isolated buck converter, 30khZ, DIP7 package 85-375Vac 12V / 140mA DN0009
Full Set of Evaluation boards Flyback, Buck, Buck-Boost
46
STEVAL-ISA116V1 VIPER26LD Not isolated buck converter, 60khZ ,SO16N package 85-265Vac 16 V, 5V / 300mA AN4562
STEVAL-ISA112V1 VIPER06HN Not isolated fly-back, 115khZ, DIP7 package 85-265Vac 12V / 350mA AN4116
STEVAL-ISA113V1 VIPER06HS Not isolated fly-back, 115khZ, SSO10 package 85-265Vac 12V / 350mA AN4164
STEVAL-ISA110V1 VIPER26LN Fly-back (non iso), 60khZ, DIP7 package 85-265Vac 12V / 1A AN4106
STEVAL-ISA111V1 VIPER26HN Fly-back (non iso), 115khZ, DIP7 package 85-265Vac 12V / 1A AN4165
STEVAL-ISA060V1 VIPER17HN Fly-back (iso),115khZ, DIP7 package 85-265Vac 12V / 500mA AN2753
STEVAL-ISA062V1 VIPER17HN Fly-back (iso) (double out), 115khZ, DIP7 package 85-265Vac 5V,12V / 750mA AN2934
STEVAL-ISA117V1 VIPER16LN Fly-back (iso), 60khZ, DIP7 package 85-265Vac 12 / 400mA AN4259
STEVAL-ISA124V1 VIPER17HN Fly-back (iso) (CC/CV charger), 115khZ, DIP7 package 85-265Vac 5V / 1A AN2840
STEVAL-ISA125V1 VIPER28LN Fly-back (iso) (PEAK Power), 60khZ, DIP7 package 85-265Vac 5V / 2.4A draft
STEVAL-ISA126V1 VIPER28HN Fly-back (iso) (PEAK Power), 115khZ, DIP7 package 85-265Vac 5V / 2.4A AN2950
STEVAL-ISA071V2 VIPER16LN Fly-back (non iso) (negative) ,60khZ ,DIP7 package 85-265Vac -5V / 400mA, +7V / 160mA UM0920
STEVAL-ISA118V1 VIPER16LN Fly-back (non iso) ,60khZ ,DIP7 package 85-265Vac 16V / 280mA AN3028
STEVAL-ISA129V1 VIPER16HN Fly-back (non iso) ,115khZ ,DIP7 package 85-265Vac 16V / 280mA draf
STEVAL-ILL017V1 VIPER17HN Isolated fly-back (LED driver),115khZ, DIP7 package 220±20% 7V / 500mA AN2811
STEVAL-ISA134V1 VIPER06HN Isolated fly-back, 115khZ, DIP7 package 85-265Vac 12V / 330mA AN4372
STEVAL-ISA135V1 VIPER06HS Isolated fly-back, 115khZ, SSO10 package 85-265Vac 12V / 330mA AN4404
STEVAL-ISA136V1 VIPER06HN Isolated fly-back, 115khZ, DIP7 package 85-265Vac 5V / 600mA AN4410
STEVAL-ISA137V1 VIPER06HS Isolated fly-back, 115khZ, SSO10 package 85-265Vac 5V / 600mA AN4418
STEVAL-ISA121V1 VIPER37LE Fly-back (iso) ,60khZ ,SDIP10 package 85-265Vac 5V / 3A AN4007
STEVAL-ISA140V1 VIPER37HE Fly-back (iso) ,60khZ ,SDIP10 package 85-265Vac 12V / 1.2A AN4419
STEVAL-ISA153V1 VIPER38LE Fly-back (iso) (PEAK Power) ,60khZ ,SDIP10 package 90-265Vac 12V / 1.25A peak 1.8A AN4479
STEVAL-ISA081V1 VIPER26LN Fly-back (iso) (PRIMARY reg) ,60khZ, DIP7 package 85-265Vac 12V, 3.3V / 1A UM0984
STEVAL-ISA103V1 VIPER27LN Fly-back (iso) ,60khZ, DIP7 package 85-265Vac 5V / 2.4A AN2929
STEVAL-ISA120V1 VIPER27HN Fly-back (iso) (LED driver), 115khZ, DIP7 package 85-265Vac 10V / 750mA AN3212
STEVAL-ISA122V1 VIPER27HN Fly-back (iso),115khZ, DIP7 package 85-265Vac 5V / 2.2A AN3011
Order code p/n Short Description Vin Vout/Iout Document
EVLALTAIR05T-5W ALTAIR05T-8005 W wide range CV-CC optoless adapter demonstration
board90-265Vac 5V / 1A
AN3093
DB1534
EVLALTAIR900-M1
STEVAL-ISA133V1ALTAIR04-900
Double output SMPS for power line application using
ALTAIR04-900 primary controller85-265Vac
13V @ 550mA,
3.3V @ 100mA
AN3290
UM1518
STEVAL-ISA105V1 ALTAIR04-900 Power supply for energy meter and power line modem 90-440Vac
5V @ 70mA, 1A max,
3.3V @ 30mA, 150mA max
12V @ 2mA, 100mA max
5V ISO @ 2mA, 80mA max
AN4154
47
Up to 5W at wide input voltage range
Isolated
Evaluation boards - Altair
PSR Flyback topologies
Isolation Challenges for DC/DC
DC DC
Isolated DC-DC converter
Agenda
Typical applications for Isolated DC-DC converters
12V and 24V bus• Theory of flyback-buck topology
• ST solutions for flyback-buck
• Measurements of the prototype
• Conclusion
5V bus
• Theory flyback-boost
• ST solution for 5V bus
50
Isolated DC-DC converters are used in the applications where is requested power supply for
circuits which have different ground potential then the rest of the application
Power supply
• Welding machines
• Inductive heating
• Solar inverters
• Charger for Hybrid-electrical car and electrical car
Motor control
• Industrial motor drivers
• Automotive motor drivers
• Factory automation motor drivers
Metering
• Power supply for Metrology part in 3 phase power meters
I/O peripherals in automation system
• Power for isolated transceivers of the RS485, CAN, Profibus ….
DC DC
Applications for Isolated DC-DC 51
Example of the application
MPower
Stage
Control
600V
15V15V
Information
Power
List of the typical configuration
Output
Input 5V 12V 15V 24V
5V x
12V x x x x
15V x x x x
24V x x x x
52
Theory of Flyback-buck topology
52
Theory
Flyback-buck
VIN
G N D
C 1
C 2
R 2
R 1
T 1
D 1
C 3
Vout
GND_2
U 1
F B
Converter
L X
Step-down
Synchronous
Vin
GND_1
Ureg
L S
H S
𝑉𝑂𝑈𝑇 =𝑉𝑟𝑒𝑔 − 𝑉𝐿𝑆
𝑛− 𝑉𝐷1
𝑛 =𝑃𝑟𝑖𝑚
𝑆𝑒𝑐
𝑉𝐿𝑆 = 𝑅𝐷𝑆𝑂𝑁−𝐿𝑆 ∗ 𝐼𝑅𝑀𝑆
Vout – Output voltage
Vreg – Regulated voltage by converter
Vls – Voltage drop on the Low-side mosfet
Vd1 – Voltage drop on the diode D1
n – turns ratio of the transfomrer T1
Prim – number of the primary turns
Sec – number of the cesonadry turns
Rdson-LS – Rdson of the low-side mosfet
Irms – RMS current thru the LS mosfet
54
Theory
Flyback-buckState 1
LS switch: OFF
HS switch: ON
Current-A: C1 -> HS -> T1 -> C2 -> GND_1
State 2
LS switch: ON
HS switch: OFF
Current-A: C2 -> T1 -> LS -> GND_1
Current-B: T1 -> D1-> C3 -> GND_2
VIN
G N D
C 1
C 2
T 1
D 1
C 3
Vout
GND_2
U 1
L XVin
GND_1
Ureg
L S
H S
VIN
G N D
C 1
C 2
T 1
D 1
C 3
Vout
GND_2
U 1
L XVin
GND_1
Ureg
H S
L S
55
Operation mode of the controller
t
I
ton toff
Iout
L
0
t
I
ton toff ton toff
L
0
Iout
Medium and full load
LNM and LCM
Light load
LCM
Light load
LNM
t
I
ton toff
Iout
ton toff
L
0
Low consumption mode LCMmaximizes the efficiency at light load.
When the load is low, the burst mode is
activated. It minimizes the quiescent
current request.
Low noise mode (LNM) = Sink mode
= Forced PWMimplements a forced PWM operation over
the whole range of output current.
C 1
C 2
Vin
G N D
H S
Vout
G N D
L
L S
IoutI
L
56
ST solutions for Flyback-buck topology
56
57L6984
350mA synchronous buck converter• 350 mA DC output current
• 4.5 V to 36 V operating input voltage
• Synchronous rectification
• Low consumption mode or low noise mode
• 100 uA IQ at light load (LCM VOUT = 3.3 V)
• 13 uA IQ-SHTDWN
• Adjustable fSW (250 kHz - 600 kHz)
• Output voltage adjustable from 0.9 V
• VBIAS maximizes efficiency at light load
• 350 mA valley current limit
• Constant on time control scheme
• PGOOD open collector
• Thermal shutdown
PSKIP/PWM
FB
TON
EN
GND
PGOOD
VBIAS
VCC
VIN
LX
58Schematic example
• Input voltage: 10 – 36V
• Output power: 2.5W
• Switching frequency: 250kHz – 600kHz
Vin
GND_1
Vin
Ton
E N
L N M
E P G N D
P g o o d
F B
Vcc
L x
Vbias
1 0 u F
C 3
2 M
R 1
1 0 0 k
R 2
1 0 0 n F
C 4
4 7 0 n F
C 6
1 R
R 6
4.7uF
C 7
0R1
R 4
1 8 k
R 5
8 2 kR 3
1 0 n FC 5
T 1
D 1
STPS2L60
1 0 u F
C 1
1 0 u F
C 2
Vout
GND_2
L6984U 1
1:2
2 5 u H
59L6986
2 A synchronous step-down switching regulator• 2 A DC output current
• 4 V to 38 V operating input voltage
• Low consumption mode or low noise mode
• 30 uA IQ at light load (LCM VOUT = 3.3 V)
• 5 uA IQ-SHTDWN
• Adjustable fSW (250 kHz - 2 MHz)
• Output voltage adjustable from 0.85 V to VIN
• Embedded output voltage supervisor
• Synchronization
• Adjustable soft-start time
• Internal current limiting
• Overvoltage protection
• Peak current mode architecture
• RDSON HS = 180 mOhm, RDSON LS = 110 mOhm
60Schematic example
• Input voltage: 10 – 38V
• Output power: 14W
• Switching frequency: 250kHz – 2MHz
VIN
PGND
MLF
V C C
SS/INH
D E L A Y
SGND
F S W
E P SYNCH
COMP
1 0 u F
C 3
1 2 0 p F
C 9
1 3 0 k
R 2
1 0 u F
C 6
1 8 k
R 3
8 2 k
R 1
T 1
D 1
STPS2L60
1 0 u F
C 1
1 0 u F
C 2
Vout
GND_2L6986U 1
1:2
2 5 u H
PGND
F B
L X
L X
VBIAS
RST
1 u F
C 4
1 u F
C 5
6 8 n F
C 7
1 0 n F
C 8
Vin
GND_1
Measurements
of the prototype board
61
62Schematic of the prototype• Based on L6984
• Input voltage range: 10 – 32V
• Output voltage: 10V
• Output current: 250mA
• Switching frequency: 365kHz
7 - 32V
GND_1
Vin
Ton
E N
L N M
E P G N D
P g o o d
F B
Vcc
L x
Vbias
1 0 u F
C 3
2 M
R 1
1 0 0 k
R 2
1 0 0 n F
C 4
4 7 0 n F
C 6
1 R
R 6
4.7uF
C 7
0R1
R 4
1 8 k
R 5
8 2 kR 3
1 0 n FC 5
T 1
D 1
STPS2L60
1 0 u F
C 1
1 0 u F
C 2
1 0 V
GND_2
L6984U 1
1:2
2 5 u H
Hardware for the prototype 63
Manufacturer: Wurth Elektronik
Part number: 750370058
Primary inductance: 25uH
Turns ratio: 1 : 2 (prim : sec)
Core: EP7
PCB board Transformer
Evaluation board for L6984
There was used an evaluation board with L6984 in buck which was modified to the flyback-
buck topology. The transformer is from Wurth Elekronik.
50
mm
50mm
Typical waveforms at full load
2: Voltage on LX pin
3: Primary current
4: Secondary current
Input
Voltage: 11V
Current: 155mA
Output
Voltage: 9.55V
Current: 152mA
VIN
G N D
C 1
C 2
T 1
D 1
C 3
Vout
GND_2
U 1
L XVin
GND_1
Ureg
H S
L S
Measurements
25/02/2016Presentation Title
65
0
1
2
3
4
5
6
7
5 10 15 20 25 30 35
Inp
ut
cu
rren
t [m
A]
Input voltage [V]
Input current at no-load
40
50
60
70
80
90
100
0 400 800 1200 1600 2000 2400 2800
Eff
[%
]
Pout [mW]
Efficiency
Uin = 12V
Uin = 24V
8
8.5
9
9.5
10
10.5
11
11.5
12
0 50 100 150 200 250 300
Uo
ut
[V]
Iout [mA]
Load regulation
Uin = 12V
Uin = 24V
6
7
8
9
10
11
5 10 15 20 25 30 35
Uo
ut
[V]
Uin [V]
Line regulation
Iout = 10mA
Iout = 30mA
Iout = 60mA
Iout = 100mA
Iout = 150mA
Iout = 250mA
Applicable operating range 66
• Very good load regulation considering primary feedback
• No optocoupler
• Efficiency higher than 80% from 20% load
• Low input currrent during no-load operation (about 4mA)
• Suitable for industrial 12V and 24V bus
• Good line regulation
• Input voltage range: 8 -36V
• Output power:
12V bus 24V bus
L6984 2W 4W
L6986 10W 20W
5V bus
Flyback-boost topology
67
Theory
Flyback-boost
𝑉𝑂𝑈𝑇 =𝑉𝑟𝑒𝑔 − 𝑉𝐻𝑆 − 𝑉𝐼𝑁
𝑛− 𝑉𝐷1
𝑛 =𝑃𝑟𝑖𝑚
𝑆𝑒𝑐
𝑉𝐻𝑆 = 𝑅𝐷𝑆𝑂𝑁−𝐻𝑆 ∗ 𝐼𝑅𝑀𝑆
Vout – Output voltage
Vin – Input voltage
Vreg – Regulated voltage by converter
Vhs – Voltage drop on the High-side mosfet
Vd1 – Voltage drop on the diode D1
n – turns ratio of the transfomrer T1
Prim – number of the primary turns
Sec – number of the cesonadry turns
Rdson-HS – Rdson of the high-side mosfet
Irms – RMS current thru the LS mosfet
I N
G N D
C 1
C 2
R 2
R 1
T 1
D 1
C 3
Vout
GND_2
U 1
F B
Converter
L X
Step-up
Synchronous
Vin
GND_1
Ureg
L S
H S
O U T
69
Theory
Flyback-boostState 1
LS switch: ON
HS switch: OFF
Current-A: C1 -> T1 -> LS -> GND_1
State 2
LS switch: OFF
HS switch: ON
Current-A: C1 -> T1 -> HS -> C2 -> GND_1
Current-B: T1 -> D1-> C3 -> GND_2
G N D
I N
L X
O U T
C 2C 1
5 V
D 1
C 3
Vout
U 1
Ureg
T 1
GND_2
GND_1
H S
L
S
G N D
I N
L X
O U T
C 2C 1
5 V
D 1
C 3
Vout
U 1
Ureg
T 1
GND_2
GND_1
L S
H S
70
ST solution for flyback-boost topology
70
Solution for 5V BUSST8R00 – synchronous step-up converter
71
• Output voltage accuracy: ± 2%
• Output current up to 1 A
• Low ripple voltage: 5 mV (typ.)
• Synchronous rectification
• High 90% efficiency: VO = 9 V (typ.)
• Few external components
• Thermal shutdown protection
• Very small DFN8 (4 x 4 mm) packageINH
H
V
PGND G
N
D
I
N
L
X
O U T
F B
2 k
R 1
2 2 0 R
R 2
1 0 u F
C 21 0 u F
C 1
5 V
D 1
STPS120M
1 0 u F
C 3
Vout
U 1
ST8R00WPUR
Ureg
T 1
GND_2
GND_1
Measurements
of the prototype board
72
Hardware for the prototype 73
Manufacturer: Wurth Elektronik
Part number: 750370058
Primary inductance: 25uH
Turns ratio: 1 : 1 (prim : sec)
Core: EP7
PCB board Transformer
STEVAL-ISA048V2
There was used an evaluation board with ST8R00 in boost which was modified to the flyback-
boost topology. The transformer is from Wurth Elekronik.
Measurements
25/02/2016Presentation Title
74
40
45
50
55
60
65
70
75
80
0 500 1000 1500 2000
Eff
icie
ncy [
%]
Output power [mW]
Efficiency
3
3.5
4
4.5
5
5.5
6
6.5
7
0 50 100 150 200 250 300 350 400 450
Ou
tpu
t v
olt
ag
e [
V]
Output current [mA]
Load regulation
Isolation transformers options 75
http://coilcraft.com/prod_isolation.cfm
http://katalog.we-
online.de/en/pbs/search/POWER_MAGNETICS/TRANSFORMERS_FOR
_DCDC_CONVERTER
http://katalog.we-online.de/en/pbs/WE-FB
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