Quick Charge 2.0 Solution 15W USB Adapter Subject ......Quick Charge 2.0 Solution_15W USB Adapter...

Quick Charge 2.0 Solution_15W USB Adapter

LD5718_DB-01

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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+


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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


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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


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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


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LD5718_DB-00, March 2015

2. USB Adapter Application Circuit

2.1. Schematic


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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


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2.3. Transformer Specification


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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


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LD5718_DB-01, April 2015

3.1.2. Efficiency with Quick Charge 2.0 Operation

Vo=9V


>84.13% (DOE-6, 9V/1.67A)

PASS


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%


Fig. 3.1.2, Load vs. Efficiency @ Vo=9V


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Vo=12V


>84.13% (DOE-6, 12V/1.25A)

PASS


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%


Fig. 3.1.3, Load vs. Efficiency @ Vo=12V


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LD5718_DB-01, April 2015

3.1.3. Power Saving


50mW @ no load


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


NA NA


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


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Fig. 1.2.1, CV-CC Curve @ Vo=5V

3.2.2 Constant Voltage and Constant Current with Quick Charge 2.0 Operation


NA NA


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


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Fig. 3.2.2, Constant Voltage and Constant Current with QuickCharge 2.0 Operation 5V



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LD5718_DB-01, April 2015



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3.3. Turn On Delay Time

Input Tturn on delay

90Vac /47Hz 51.32 msec


< 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


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3.4. Power Component Stress Voltage


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




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




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)


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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


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3.5. EMI TEST


EN55002 CLASS B PASS

Vo=5V

Fig. 3.5.1 Vo=5V 115V/L Fig. 3.5.2 Vo=5V 115/N


Vo=9V



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3.6. PE+ Compatibility (An additional 10uF cap must be added to c8)


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

Quick Charge 2.0 Solution 15W USB Adapter Subject ......Quick Charge 2.0 Solution_15W USB Adapter...

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