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Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
1
Leadtrend Technology Corporation
LD5718_DB-00, March 2015
Subject Model Name
LD5718 Demo Board LD5718_DB-01 (5V/2A, 9V/1.67A,
12V/1.25A)
Key Features
Quick Charge 2.0 Compliance with LD8108
Flyback topology with PSR Control
Constant Voltage
Constant Current
High Efficiency with QR Operation (Meet DOE-6)
Compatible to PE+
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
2
Leadtrend Technology Corporation
LD5718_DB-00, March 2015
USB Adapter Design Check List
MODEL NAME LD5718_DB-01 TOTAL PAGE: 19(Page)
Engineer Chris DATE: 2015/3/26
NO. TEST ITEM SPEC. NAME. PAGE RESULT
1 Input Characteristics – Efficiency >78.7% Chris 8 ~ 10 PASS
2 Input Characteristics - Power Saving <50mW Chris 11 ~ 11 PASS
3 Output Characteristics – CV-CC Regulation NA Chris 11 ~ 12 NA
4 Output Characteristics –
CV-CC with Quick Charge 2.0 NA Chris 12 ~ 14 NA
5 Turn On Delay Time < 3 sec Chris 15 ~ 15 PASS
6 Power Component Stress Voltage < 95% Chris 16 ~ 17 PASS
7 EMI Test - Conduction NA Chris 18 ~ 19 PASS
8 PE+ Compatibility NA Chris 20 ~ 20 PASS
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
3
Leadtrend Technology Corporation
LD5718_DB-00, March 2015
Contents Index 1. USB ADAPTER SPECIFICATION ........................................................... 4
1.1. INPUT CONDITION ............................................................................................. 4
1.2. OUTPUT CONDITION ......................................................................................... 4
1.3. AMBIENT TEMPERATURE .............................................................................. 4
2. USB ADAPTER APPLICATION CIRCUIT ............................................. 5
2.1. SCHEMATIC ....................................................................................................... 5
2.2. BOM LIST ......................................................................................................... 6
2.3. TRANSFORMER SPECIFICATION ........................................................................ 7
3. EXECUTIVE SUMMARY .................................................................................... 8
3.1. INPUT CHARACTERISTICS ................................................................................. 8 3.1.1. Efficiency ........................................................................................................................ 8 3.1.2. Efficiency with Quick Charge 2.0 Operation .................................................................. 9 3.1.3. Power Saving ................................................................................................................. 11
3.2. OUTPUT CHARACTERISTICS ........................................................................... 11 3.2.1 Constant Voltage and Constant Current .......................................................................... 11 3.2.2 Constant Voltage and Constant Current with Quick Charge 2.0 Operation ................... 12
3.3. TURN ON DELAY TIME.................................................................................... 15
3.4. POWER COMPONENT STRESS VOLTAGE ......................................................... 16
3.5. EMI TEST ...................................................................................................... 18
3.6. PE+ COMPATIBILITY (AN ADDITIONAL 10UF CAP MUST BE ADDED TO C8) ... 20
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
4
Leadtrend Technology Corporation
LD5718_DB-00, March 2015
1. USB Adapter Specification
1.1. Input Condition
AC Input Voltage : 90VAC ~ 264VAC
AC Input Frequency : 47Hz ~ 63Hz
1.2. Output Condition
Output Voltage : Typically 5V with 5V, 9V, 12V Quick Charge 2.0 Operation
Output Current : Typically 5V/2A, 9V/1.67A, 12V/1.25A Quick Charge 2.0 Operation
1.3. Ambient Temperature
Ambient Temperature 25oC
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
5
Leadtrend Technology Corporation
LD5718_DB-00, March 2015
2. USB Adapter Application Circuit
2.1. Schematic
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
6
Leadtrend Technology Corporation
LD5718_DB-00, March 2015
2.2. BOM List
P/N Component Value Footprint
BD1 800V/1A MICRO DIP/TDI
C1 100pF CY4.5X13
C2 470uF, 16V CEA8
C3 820uF, 16V CEA8CX11.5
C4 330p C1206
C5 330pF, 1kV C1206
C6, C7 15uF, 400V CEA10
C8, C10 2.2uF, 25V C0805
C9 0.33uF, 50V C0805
C11 10p C0805
C12 470p C0805
C13 100p C0805
C14 0.1u C0805
D1 PT10V80SP SMPC
D2 S1ML SOD-123
D3 1000V, 1A SOD-123
D4 1N4148W SOD-123
F1 250V/1A F11
L1 Inductor R1AI
L2 Short R1206
NTC1 100k R0805
Q1 UF601 SOT-23
Q2 700V, 5A TO-251AB
P/N Component Value Footprint
R1 10k R1206
R2 200k R1206
R3, R7 47k R1206
R5 100 R1206
R6 50 R1206
R8 0 R0805
R9 3.3 R0805
R10 30 R1206
R11 120 R0805
R12 56k R0805
R13 100k R0805
R14 100 R0805
R16 10k R0805
R17 n/a R0805
R18 6.2k R0805
R19, R20 2 R1206
R21 510k R0805
T1 Transformer EE13/7/10_2
U1 LD5718 SO-8
U2 LD8108 SO-8
U3 EL357N 4 PIN SOP
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
7
Leadtrend Technology Corporation
LD5718_DB-01, April 2015
2.3. Transformer Specification
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
8
Leadtrend Technology Corporation
LD5718_DB-01, April 2015
3. Executive Summary Test Equipment
Equipment Equipment Model No.
Electrical Load Chroma 63030
Power Meter WT210
AC power source Chroma 61602
Scope TDS3014
3.1. Input Characteristics
3.1.1. Efficiency
Specification Result
>78.7% (DOE-6, 5V/2A)
PASS
Note: Measured at PCB
AC Input
Pin (W)
Po
(W) Vo
(V) Io (A)
Efficiency Average
Eff.
115 Vac 60 Hz
12.647 10.436 5.218 2.0 82.52%
82.84% 9.286 7.728 5.152 1.5 83.22%
6.131 5.1 5.100 1 83.18%
3.060 2.5235 5.047 0.5 82.46%
.1.231 0.992 4.96 0.2 80.58%
230 Vac 50 Hz
12,49 10.32 5.16 2.0 82.63%
81.92% 9.31 7.668 5.112 1.5 82.36%
6.183 5.070 5.070 1 82.00% 3.106 2.5055 5.011 0.5 80.67%
1.273 0.975 4.875 0.2 76.59%
Table 3.1.1, Efficiency @ Input Voltage = 115Vac / 230Vac/Vo=5V
Fig. 3.1.1, Load vs. Efficiency @Vo=5V
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
9
Leadtrend Technology Corporation
LD5718_DB-01, April 2015
3.1.2. Efficiency with Quick Charge 2.0 Operation
Vo=9V
Specification Result
>84.13% (DOE-6, 9V/1.67A)
PASS
Note: Measured at PCB
AC Input
Pin (W)
Po
(W) Vo
(V) Io (A)
Efficiency Average
Eff.
115 Vac 60 Hz
18.19 15.553 9.313 1.67 85.50%
85.31% 13.52 11.625 9.281 1.2525 85.98%
8.99 7.725 9.251 0.835 85.92%
4.54 3.806 9.226 0.4125 83.83%
1.268 1.01 9.181 0.11 79.64%
230 Vac 50 Hz
18.05 15.516 9.291 1.67 85.96%
85.20% 13.50 11.590 9.257 1.2525 85.88% 9.04 7.708 9.231 0.835 85.26%
4.536 3.800 9.205 0.4125 83.71%
1.298 1.003 9.116 0.11 77.25%
Table 3.1.2, Efficiency @ Input Voltage = 115Vac / 230Vac/Vo=9V
Fig. 3.1.2, Load vs. Efficiency @ Vo=9V
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
10
Leadtrend Technology Corporation
LD5718_DB-01, April 2015
Vo=12V
Specification Result
>84.13% (DOE-6, 12V/1.25A)
PASS
Note: Measured at PCB
AC Input
Pin (W)
Po
(W) Vo
(V) Io (A)
Efficiency Average
Eff.
115 Vac 60 Hz
17.73 15.266 12.213 1.25 86.10%
85.57% 13.25 11.419 12.180 0.9375 86.18%
8.83 7.588 12.141 0.625 85.94%
4.503 3.785 12.111 0.3125 84.05%
1.257 0.996 12.005 0.083 79.27%
230 Vac 50 Hz
17.56 15.234 12.187 1.25 86.75%
85.41% 13.19 11.391 12.147 0.9375 86.34% 8.87 7.584 12.122 0.625 85.41%
4.546 3.778 12.091 0.3125 83.12%
1.263 0.991 11.938 0.083 78.45%
Table 3.1.3, Efficiency @ Input Voltage = 115Vac / 230Vac/Vo=12V
Fig. 3.1.3, Load vs. Efficiency @ Vo=12V
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
11
Leadtrend Technology Corporation
LD5718_DB-01, April 2015
3.1.3. Power Saving
Specification Result
50mW @ no load
Note: Measured at PCB
AC input No load input
power
115V/60Hz 22.78mW
230V/50Hz 38.94mW
Table 3.1.4, No load input power @ Input Voltage = 115Vac / 230V
3.2. Output Characteristics
3.2.1 Constant Voltage and Constant Current
Specification Result
NA NA
Note: Measured at PCB
Vac CV Mode CC Mode
Vo (V) Io (A) Vo (V) Io (A)
90
4.987 0 5.0 2.290
5.175 0.5 4.7 2.291
5.232 1 4.4 2.291
5.288 1.5 4.1 2.293
5.363 2 3.9 2.295
264
4.956 0 5.0 2.443
5.106 0.5 4.7 2.448
5.183 1 4.4 2.452
5.223 1.5 4.1 2.456
5.268 2 3.9 2.446 Table 3.2.1, CV-CC Regulation @ Vo=5V
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
12
Leadtrend Technology Corporation
LD5718_DB-01, April 2015
Fig. 1.2.1, CV-CC Curve @ Vo=5V
3.2.2 Constant Voltage and Constant Current with Quick Charge 2.0 Operation
Specification Result
NA NA
Note: Measured at PCB
115 Vac Rated Load
CV Mode (V) CC Mode (A)
5V 5.363 2.291
9V 9.447 1.891
12V 12.354 1.419
Table 3.2.2, CV-CC Regulation with Quick Charge 2.0 Operation
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
13
Leadtrend Technology Corporation
LD5718_DB-01, April 2015
Fig. 3.2.2, Constant Voltage and Constant Current with QuickCharge 2.0 Operation 5V
Fig. 3.2.3, Constant Voltage and Constant Current with QuickCharge 2.0 Operation 9V
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
14
Leadtrend Technology Corporation
LD5718_DB-01, April 2015
Fig. 3.2.4, Constant Voltage and Constant Current with QuickCharge 2.0 Operation 12V
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
15
Leadtrend Technology Corporation
LD5718_DB-01, April 2015
3.3. Turn On Delay Time
Input Tturn on delay
90Vac /47Hz 51.32 msec
Specification Result
< 3 sec PASS
Table 3.3.1, Turn On Delay Time
CH1:Vac, CH2:Vo, CH3:Io
Fig. 3.3.1, Start-up Waveforms @ 90Vac/47Hz
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
16
Leadtrend Technology Corporation
LD5718_DB-01, April 2015
3.4. Power Component Stress Voltage
Specification Result
Derating normal< 95% transient<100%
PASS
Steady State
No. Item Max. Rating(V)
Steady State(264V/60Hz)
Measurement Derating(%)
V
1 Q2 700V 654 93.4%
2 D1 80V 59.6 74.5% Table 3.4.1, MOSFET and Diode Stress Voltage @ Steady State (264V/ 60Hz)
Turn-on
No. Item Max. Rating(V)
Steady State(264V/60Hz)
Measurement Derating(%)
V
1 Q2 700V 634 90.57%
2 D1 80V 53.2 66.5%
Table 3.4.2, MOSFET and Diode Stress Voltage @ Transient State (264V/ 60Hz)
Short circuit
No. Item Max. Rating(V)
Steady State(264V/60Hz)
Measurement Derating(%)
V
1 Q2 700V 630 90%
2 D1 80V 55.6 69.5%
Table 3.4.3, MOSFET and Diode Stress Voltage @ Transient State (264V/ 60Hz)
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
17
Leadtrend Technology Corporation
LD5718_DB-01, April 2015
Fig. 3.4.1, Q2 steady state Fig 3.4.2. Q2 turn-on
Fig. 3.4.3, Q2 short circuit Fig 3.4.4. D1 steady state
Fig. 3.4.5, D1 turn on Fig 3.4.6. D1 short circuit
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
18
Leadtrend Technology Corporation
LD5718_DB-01, April 2015
3.5. EMI TEST
Specification Result
EN55002 CLASS B PASS
Vo=5V
Fig. 3.5.1 Vo=5V 115V/L Fig. 3.5.2 Vo=5V 115/N
Fig. 3.5.3 Vo=5V 230V/L Fig. 3.5.4 Vo=5V 230/N
Vo=9V
Fig. 3.5.5 Vo=9V 115V/L Fig. 3.5.6 Vo=9V 115/N
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
19
Leadtrend Technology Corporation
LD5718_DB-01, April 2015
Fig. 3.5.7 Vo=9V 230V/L Fig. 3.5.8 Vo=9V 230/N
Fig. 3.5.9 Vo=12V 115V/L Fig. 3.5.10 Vo=12V 115/N
Fig. 3.5.11 Vo=12V 230V/L Fig. 3.5.12 Vo=12V 230/N
Quick Charge 2.0 Solution_15W USB Adapter
LD5718_DB-01
20
Leadtrend Technology Corporation
LD5718_DB-01, April 2015
3.6. PE+ Compatibility (An additional 10uF cap must be added to c8)
Specification Result
NA NA
Note: Measure at PCB
115 Vac Rated Load
CV Mode (V) CC Mode (A)
Level-1 5.175 2.347
Level-2 7.241 2.321
Level-3 9.306 1.906
Level-4 12.201 1.425
Level-5 4.981 2.336
Level-6 4.784 2.336
Level-7 4.566 2.338
Level-8 4.369 2.338
Level-9 4.171 2.338
Level-10 3.950 2.332
Level-11 3.731 2.321
Table 3.6.1 CV & CC mode of PE+ operation
Figure 3.6.1 Pump Express
TM Plus Operation with Vo=3.5~12V