st digital power conversion: stluxv.21ic.com/alleditor/2013dianyuan/st.pdf• bi-phase manchester...

ST Digital Power Conversion:

STLUX Power conversion BU – Industrial & Power Conversion

• The STLux is a flexible digital platform with a full set of specific features and peripherals for AC/DC and DC/DC Power Conversion

• Suitable for Digital Power Supply (DPS): PFC control, LLC, Asymmetrical Half Bridge, Fly-back, Full Bridge topologies and Buck/Boost single/multi channel synchronous rectification

• SMART LIGHTING: Suitable for LED, Fluorescent, HID applications - Dimming capability (PWM and/or LINEAR) and integration with sensors

• Wired or wireless communications, simplifying the installation in large indoor and outdoor area, reducing maintenance costs

STLUX platform 2

STLUX385A: block diagram

• SIX configurable PWM State Machine Event Driven (SMED) 10.4ns resolution (up to 1.3ns using automatic dithering)

• 8 channels 10 bit ADC with programmable op amp GAIN, 2.4 µs conversion time,

• 4 Analog Comparators and 6 fast digital inputs synchronized with 96MHz clock

• ST core based (up to 20 MIPS)

• 16-bit/8-bit and 16-bit/16-bit divisions

• Faster 8-bit*8-bit multiplication, signed arithmetic operation

• 3V to 5.5V DC voltage supply (IC performances are optimized for 3.3V)

• -40 ºC to 105 ºC temperature range

• TSSOP38

DALI

I²C

16-bit System timer

2x watchdog

(IWDG and WWDG)

AWU

Addre

ss a

nd d

ata

bus

2kB SRAM

1kB EEPROM

32kB

Flash Memory

4 Analog

Comparators

Reset system

POR

1.8V regulator

Addre

ss a

nd d

ata

bus

Nested IT controller

32 IT vectors

12 external IT

Internal RC

oscillator 16MHz

Internal RC

oscillator 153.6kHz

Clock Controller

SWIM

Debug module

12 I/Os

10bit ADC with gain

8channels

96MHz PLL

6 Fast inputs

UART

16-bit PWM SMED0

16-bit PWM SMED1

16-bit PWM SMED2

16-bit PWM SMED3

16-bit PWM SMED4

16-bit PWM SMED5

Xtal 1-16MHz

ST Core

@ 16MHz

BOR

Clock detector

Auxiliary timer

3

STLUX385A meets Power Conv.

requirements • SIX configurable PWM State Machine

Event Driven (SMED) 10.4ns resolution (up to 1.3ns using automatic dithering)

• 4 Analog Comparators and 6 fast digital inputs synchronized with 96MHz clock

• 8 channels 10 bit ADC with programmable op amp GAIN resolution), 2.4 µs conversion time,

DALI

I²C

16-bit System timer

2x watchdog

(IWDG and WWDG)

AWU

Addre

ss a

nd d

ata

bus

2kB SRAM

1kB EEPROM

32kB

Flash Memory

4 Analog

Comparators

Reset system

POR

1.8V regulator

Addre

ss a

nd d

ata

bus

Nested IT controller

32 IT vectors

12 external IT

Internal RC

oscillator 16MHz

Internal RC

oscillator 153.6kHz

Clock Controller

SWIM

Debug module

12 I/Os

10bit ADC with gain

8channels

96MHz PLL

6 Fast inputs

UART

16-bit PWM SMED0

16-bit PWM SMED1

16-bit PWM SMED2

16-bit PWM SMED3

16-bit PWM SMED4

16-bit PWM SMED5

Xtal 1-16MHz

ST Core

@ 16MHz

BOR

Clock detector

Auxiliary timer

• STLUX digital power converters are the right solution for digital power conversion applications.

• ST programmable SMED peripherals + Switch matrix and 8 bits ST core provide flexible and complete

power management functionalities in a single IC.

• By providing high–speed PWMs (96MHz), dedicated 8ch ADCs with selectable gain, STLUX exploits

system performance and reliability

4

STLUX CORE : SMED

SMED – Basic overview State Machine – Event Driven

• Signal generating machine

• Software Configurable Peripheral

• Modular approach for maximum flexibility

• 6 independent SMED on STLUX385

SMED x

Clock source

(up to 96MHz)

Event 0

Event 1

Event 2

Coupling interface

to other SMEDs

Output pin

Each SMED integrates:

• One controlled output

• 3 programmable event inputs

• Edge/level event generation

• 16bits counter

• Clock frequency up to 96MHz

• Four 16bits time compare registers

• One 16bits dump register

6

Connection Switch Matrix – Input Events

+

- CMP0 DAC0

CPP[0]

DAC3

CMP3

+

- CMP1

+

- CMP2

+

- CMP3

DAC1 CPP[1]

DAC2 CPP[2]

CPP[3]

Software flag[5:0]

OUT0 (SMED0)

OUT1 (SMED1)

OUT5 (SMED5)

DIGIN[5:0] Digital Comparators

SMED0

Event0_0

Event0_1

Event0_2

OUT0

SMED1

Event1_0

Event1_1

Event1_2

OUT1

SMED2

Event2_0

Event2_1

Event2_2

OUT2

SMED3

Event3_0

Event3_1

Event3_2

OUT3

SMED4

Event4_0

Event4_1

Event4_2

OUT4

SMED5

Event5_0

Event5_1

Event5_2

OUT5

Pro

gra

mm

ab

le S

wit

ch

Matr

ix

7

State Machine - Complete IDLE HOLD

S2 S1

S3 S0

Sequential state transitions .

Fixed evolution S0->S1->S2->S3

To any

state From

any

state

Event controlled direct state transitions. Direct jump to any state

Each state has 3 configuration registers to program

• Conditions when the machine leaves the current state and

what is the next state

• Actions to be done when leaving the state – (counter reset

and/or output pin level)

8

SMED Clock Sources

• Each SMED with independent clock

• 96MHz PLL+ programmable Dithering

• 1.3ns average resolution

• 13Hz average frequency step @ 100kHz

9

• Up to 4 independent comparators

• Very fast propagation delay (50 ns max)

• Internal 4 bit DAC reference: 16 values selectable from 0 to 1.23 V (bandgap

reference)

• One comparator available with external reference

Analog Comparators 10

• 8 channels

• 10 bit resolution with gain (x1.6 or x6.4)

• 300 µV resolution (G = x6.4)

• Conversion time: 2.4 µs (single mode), 3 µs (circular mode)

• Reference internally generated from the band-gap => independent on supply

voltage => no need for very accurate voltage supply

Analog to Digital Converter 11

Hardware DALI

Main features:

• Bi-phase Manchester asynchronous serial

data format (6-9V)

• Programmable 1.2kHz, 2.4kHz and 4.8 kHz

transmission rate (±10%)

• Bi-directional communications in four 8-bit

forward/backward data registers

• Variable 16-18bit and 24 bit forward message

length are supported

• 153.6Khz internal RC can be used in low

power (standby) mode for Dali peripheral

• 500ms (±10%) interface failure detection to

monitor receiver line timeout

• Maskable interrupt

• Dali_rx, Dali_tx polarity insensitive signal lines

Standard references – IEC 62386 – xxx • 101 – general requirements of systems

• 102 – general requirements of control gears

• 201 – fluorescent lamps

• 202 – emergency lighting

• 203 – discharge lamp (not Fluorescent)

• 204 – LV Halogen

• 205 – supply voltage for incandescent lamps

• 206 – Conversion from digital to DC voltage

• 207 – LED modules

• 208 – Switching function (on/off devices ndr)

• 209 – Color LED

• 210 – Sequencer

12

Visual PWM generation configurator • Easy approach to SMED configuration

• Visual configuration of user applications

• Graphic state evolution visualization

• C code generation

• Import from real application for debug

13

Application Examples (tools)

TM Boost PFC converter 130W

STLUX385 Based Platform description

TM Boost PFC converter 130W

• Input universal range (90-265V)

• No-Load management

• Adaptive Start-up

• User Manual writing ongoing

• FINAL BOARD available

16

130W TM Boost PFC converter

Idle

S2 (T2)

S0 (T0)

S3 (T3)

S1 (T1)

Machine

enable Counter = T0

Counter = T3

or

Event(0) = level high Counter = T2

Counter = T1

or

Event(1) = rising edge Output = 1

cnt reset Output = 1

Output = 0

Output = 0

cnt reset Output = 1

cnt reset

Counter

Output (gate)

ZCD

Current

sense

S0 S1 S2 S3 S0 S1 S2

Falling edge on ZCD

cause S3 -> S0

Current peaks are ignored

during minimum ON- time Overcurrent

cause shortening

S1

T0 Minimum

ON time

T1 Maximum

ON time

T2 Minimum

OFF time

SMED5

Analog Comparator

CPP2

Fast input DIGIN5 STM8 Core

@ 16MHz

10bit ADC

False ZCD ignored

ZCD

Current

sense

17

Multi string LED Driver (Buck )


EVALSTLUX385CH4

EVAL STLux385 4chLED

EVALSTLUX385CH4

19

RGB LED Driver (Inverse Buck )

L6562A

T L6599T

STLUX385

EVALSTLUX385CH4

20

EVALSTLUX385CH4

Board specifications • Input Voltage: 12 V ÷ 50 V

• Channels: 4 independently configurable.

• Average channel current: 230 mA ÷ 1 A ± 5% - programmable with

91mA/step.

• Current’s Ripple: ± 10%

• Efficiency:up to 98% (based on LED number, Input voltage, LED current)

• Open circuit and short circuit protections.

• Application is protected against inductor’s saturation and short circuit on

freewheeling diode

• PWM dimming: Off, 3% - 100% Fdim = 193 Hz. Differentiated starting edges

between channels to avoid current’s spike on bus voltage.

• Interfaces: UART, DALI, 0-10 (on request), push buttons for parameter’s

settings

Typical applications

• Professional lighting, Color mixing and Color tuning, Street lighting

21

Hardware implementation (1)

Basic structure based on:

• 60 V Mosfet and driver connected

to PWM PIN of STLUX385

• Sense resistor plus noise filtering

connected to Comparator PIN of

STLUX385

• 470 µH Inductor as a trade-off

between universality and

performance

• 100 nF LED capacitor to limit in-

rush currents

22

SM - Functional state diagram

S0

TOFF

S1

TON

Min

S2

TON

Norm S3

OFF

Protect

IDLE

cmp(2) & event(1)

[Current level detected or

maximum on time elapsed]

cmp(1)

[Min ON time

elapsed]

cmp(0)

[Off time elapsed]

event(1) – ON

[Overcurrent during Min ont time]

event(2) – OFF

event(2) – ON

start

cmp(3)

[Max off time elapsed]

Interrupt on exit

[triggers the OC event to core]

HOLD

DIMM

PWM=1

PWM=0

PWM=1

PWM=0

PWM=0 PWM=0

PWM=0

23

STLUX385: RGB LED Light remotely

controlled

Gateway

(Streamplug)

AC and

HomePlug

Interface

EPHY Ethernet

WiFi WiFi PCIe

MII

UART

RGB Led

sources

STLUX385

Multi string

digital controller ZIGBEE Zigbee

SPI

EVALSTLUX385CH4

24

120W Offline LED driver


Offline PSR-ZVS 120W Street-lighting

• 120 W (200V Vout) Single string LED driver

• PSR and dimming scheme, 10bit resolution (30%)

• Extremely high efficiency (>> 90%)

• Extremely accurate light regulation

• PWM digital dimming: >1kHz, 11bit (OPTIONAL)

• Communication: DALI, UART ctrl and setup (insulated) 0-10 for white version only (insulated)

SMED3 Analog

Comparator

CPP2 Fast input

DIGIN5

STM8 Core

@ 16MHz

SMED0

SMED1

Analog

Comparator

CPP0

10bit ADC

with gain

nVLED

SMED2

DALI

200V

UART

Q1

2013

PLM

26

Offline PSR-ZVS 120W Street-lighting

• 120 W (100V Vout) Multi string LED driver

• PSR and PS dimming scheme, 10bit resolution (30%)




• Communication: DALI, UART ctrl and setup (insulated), 0-10 for white version only (insulated)

SMED3 Analog

Comparator

CPP2 Fast input

DIGIN5

STM8 Core

@ 16MHz

SMED0

SMED1

Analog

Comparator

CPP0

10bit ADC

with gain

SMED2

DALI

Q1

2013

27

Offline PSR-ZVS 120W OFFICE

• 120 W (100V Vout) Multi string LED driver

• PSR and PS dimming scheme, 10bit resolution (30%)




• Communication: DALI, UART ctrl and setup (insulated), 0-10 for white version only (insulated)

SMED3 Analog

Comparator

CPP2 Fast input

DIGIN5

STM8 Core

@ 16MHz

SMED0

SMED1

Analog

Comparator

CPP0

10bit ADC

with gain

SMED2

DALI

Q1

2013

28

Offline RGB Multi string PSR-ZVS for

High End Lighting

• 120 W Multiple string LED driver

• Primary side regulation


• Extremely accurate light regulation (for outstanding performance with RGB and colored light)

• PWM digital dimming: frequency >1kHz, 11bit

• Communication: DALI, UART for remote ctrl and setup (insulated), 0-10 for white version only (insulated)

SMED5 Analog

Comparator

CPP2 Fast input

DIGIN5

STM8 Core

@ 16MHz

SMED0

SMED1

Analog

Comparator

CPP0

10bit ADC

with gain

nVLED

opto

SMED3

STRING #1 DALI

STRING #2

STRING #3 SMED4

SMED2

1kHz

DIM

29

120W

OFFLINE (AC Mains) LED driver

• FISRT PROTYPE: functional analysis successfully

completed

• Feature fine tuning ongoing

• DALI integration ongoing

• User Manual writing ongoing

• FINAL BOARD PCB Layout ongoing

• Options

• Street-lighting 120W single string

• Steet-lighting / Office120W multi string

• RGB/White multi channel independently PWM

dimmable with programmable full light level on discrete

steps to adapt to specific Light module

AC

DALI

LE

D S

TR

ING

S

UART STLux385

30

Digital QR HPF Flyback – 60W



AUX

MULT

Fast input

DIGIN1

Fast input

DIGIN5

STM8 Core

@ 16MHz

SMED0

SMED1

Analog

Comparator

CPP3

10bit ADC

with gain

SMED2 GPIO STLUX385

SMED3

nVLED

• 60 W Single string LED driver

• Quasi resonant flyback topology with active power correction factor (PFC).

• Opto-less output current control on primary-side,

• Proprietary control algorithm.

• Analog dimming capability on average LED current.

• Remote control • DALI, Insulated 1-10 , Insulated UART for remote light control and setup

32


• Defined technical specifications

• Algorithm and hardware component evaluation on wired prototype

done

• Low voltage debugging done

• Electrical schematic ready

• PCB board ONGOING

33

170W SMPS – PFC + LLC


170W SMPS – PFC + LLC

90 – 264 Vac

B

+

B

+

+24V / 6A

+12V / 2A

+5Vsb / 2A

• Universal input range: 90 ÷ 264 Vac – 45 ÷ 65 Hz

• Output voltages:

• 24 V ± 5 % at 6 A for backlight and audio supply

• 12 V ± 3 % at 2 A for TV panel supply

• Standby mains consumption:

SMED configuration

SMED Configuration Block Function

SMED0 Synchronous

coupled PFC

MOS on-time management

SMED1 MOS off-time management

SMED2 Single PFC Analog reference generation

SMED3 Single Timing Mains frequency sync

SMED4 Synchronous

coupled LLC

Low side MOS management

SMED5 High side MOS management

This table shows how SMEDs are configured and which function they perform

36

STLUX385 Wireless Power Charger Power Conversion BU - IPC

• Wireless Power Charger (Qi) architecture (Type Axx )

• Power transmitter (H/F bridge) Freq controller (110 – 205 kHz)

• 110-175kHz 0.4-1kHz (50% DC)

• 175-205kHz 1-1.5kHz (50% DC)

• 205kHz (10-50% 0.1%)

• WPC standard power transfer and data communication protocol

• Flexible (multi platform) high performance architecture based on

STLUX385

• Firmware availability (ONGOING)

• Possibility to implement proprietary functions

• Debugging support

Power transmitter 38

STLUX385: DC HALF/FULL bridge

power Transmitter

SMED3 Analog

Comparator

CPP2 Fast input

DIGIN5

STM8 Core

@ 16MHz

SMED0

SMED1

Analog

Comparator

CPP0

10bit ADC

with gain

DEMOD

Push Botton

VBUS_ feedback

SMED2

GPIO STLUX385

VBUS

Proximity

39

STLUX385: AC HALF/FULL bridge

power Transmitter

SMED3 Analog

Comparator

CPP2 Fast input

DIGIN5

STM8 Core

@ 16MHz

SMED0

SMED1

Analog

Comparator

CPP0

10bit ADC

with gain

DEMOD

Push Botton

SMED2

GPIO

Proximity

STLUX385

VBUS

40

STLUX Platform P/N List (2013)

WIDE TEMP RANGE SMED E2PROM DALI I/F

STLUX385 6 32kB ●

STLUX385A ● 6 32kB ●

STLUX385S 6 32kB

STLUX385AS ● 6 32kB

STLUX285 4 32kB ●


STLUX285S 4 32kB


STLUX284 4 16kB ●


STLUX284S 4 16kB


41

• Raisonance RIDE7 (32kB FREE) • code editing, compilation, optimization and debugging

• Rflasher tool (standalone programmer)

• RLink hardware tool for in-circuit debugger/programmer (USB)

• IAR C compiler and tools chain (beta version available) • ST link 2 hardware tool

• Probe board available on request for quick prototyping

• Existing PCB application can be preliminary addressed by this

essential board to save application analysis time.

• Demonstration boards • DCDC Multi string LED driver (BUCK, DALI) EVALSTLUX385CH4

• 130W TM Boost PFC

• PSR-ZVS Street-lighting 120W -200V single string (Mar13)

• PSR-ZVS Street-lighting 120W -100V Multi string (May13)

• PSR-ZVS RGB 120W (Jun 13)

• Digital QR HPF Flyback – 60W (Apr 13)

• 170W SMPS – PFC + LLC (Q1)

• Libraries

• Standard Libraries are available

• DALI libraries are on development (IEC62386-xxx)

Development tools 42

st digital power conversion: stluxv.21ic.com/alleditor/2013dianyuan/st.pdf• bi-phase manchester...

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