Texas Instruments Bq50002AEVM-607 Manuale utente

SLUUBJ2–October 2016

bq50002A Wireless Power TX EVM

bqTESLA is a trademark of Texas Instruments.

Avid is a registered trademark of Avid Technology, Inc..

User's Guide

SLUUBJ2–October 2016

bq50002A Wireless Power TX EVM

The bqTESLA™ wireless power transmitter evaluation module from Texas Instruments is a high-

performance, easy-to-use development module for the design of wireless power solutions. The bq50002A

evaluation module (EVM) provides all the basic functions of a Qi-compliant, wireless charger pad. The 5-V

input, single coil transmitter enables designers to speed the development of their end-applications. The

EVM supports both the Qi WPC 1.0, WPC 1.1, and WPC 1.2 receivers and will support output power up to

5 W.

Contents

1 Applications................................................................................................................... 2

2 bq50002AEVM-607 Electrical Performance Specifications ............................................................ 2

3 Modifications.................................................................................................................. 3

4 Connector and Test Point Descriptions................................................................................... 3

4.1 Input/Output Connections.......................................................................................... 3

4.2 Test Point Descriptions ............................................................................................ 4

5 Schematic and Bill of Materials ............................................................................................ 8

6 Test Setup................................................................................................................... 11

6.1 Equipment.......................................................................................................... 11

6.2 Equipment Setup.................................................................................................. 12

6.3 EVM Procedure.................................................................................................... 12

7 I2C Interface and bqStudio ................................................................................................ 16

7.1 EV2400 Set Up.................................................................................................... 16

7.2 bqStudio ............................................................................................................ 17

8 bq50002AEVM-607 Assembly Drawings and Layout ................................................................. 18

9 Reference ................................................................................................................... 20

List of Figures

1 bq50002AEVM-607 Schematic ............................................................................................ 8

2 Efficiency vs Power, bq50002AEVM-607 TX and bq51013BEVM-764 Receiver.................................. 14

3 Start Up...................................................................................................................... 14

4 Thermal Performance...................................................................................................... 15

5 Connections of the EV2400 kit ........................................................................................... 16

6 bqStudio Window........................................................................................................... 17

7 Assembly Top............................................................................................................... 18

8 Inner Layer 1................................................................................................................ 19

9 Inner Layer 2................................................................................................................ 19

10 Bottom Layer................................................................................................................ 20

List of Tables

1 bq50002AEVM-607 Electrical Performance Specifications ............................................................ 2

2 Bill of Materials............................................................................................................... 9

Applications

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1 Applications

The bq50002AEVM-607 evaluation module demonstrates the transmitter portion of the bqTESLA™

wireless power system. This transmitter EVM is a complete transmitter-side solution that powers a

bqTESLA receiver. The EVM requires a single 5-V power supply capable of up to 2.0 A to operate and

combines the transmitter electronics, input power circuit, LED indicators, and the transmitting coil on the

single printed-circuit board (PCB). The open design allows easy access to key points of the electrical

schematic.

This EVM has the following features:

• Qi-Certified WPC 1.2 solution for 5-W operation

• 5-V input and fixed operation voltage

• Enhanced Foreign Object Detection (FOD)

• WPC 1.2 FOD

• Transmitter-coil mounting pad providing the correct receiver interface

• Highly-integrated analog front end including LDO, FETs, drivers, current sense amplifier, and de-

modulation circuit

• Standard WPC A11-type transmitter coil with no magnet

• LED and audio indication of power transfer

2 bq50002AEVM-607 Electrical Performance Specifications

Table 1 provides a summary of the EVM performance specifications. All specifications are given for an

ambient temperature of 25°C.

Table 1. bq50002AEVM-607 Electrical Performance Specifications

Parameter Notes and Conditions Min Typ Max Unit

Input Characteristics

VIN Input voltage 4.5 5 5.5 V

IIN Input current VIN = Nom, IOUT = 1 A at 5 V 1.4 A

Input no-load current VIN = Nom, IOUT = 0 A 165 mA

Input stand-by current VIN = Nom 4 mA

Output Characteristics – Receiver bq51013BEVM-764

VOUT Output voltage VIN = Nom, IOUT = 1 A , VOUT = 5 V 4.95 5.00 5.04 V

Output ripple VIN = Nom, IOUT = 1.0 A, VOUT = 5 V 200 mVPP

IOUT VIN = Min to Max VIN = Min to Max, VOUT = 5 V 0 1.5 A

Systems Characteristics

FSSwitching frequency During power transfer 110 205 kHz

ηpk Peak efficiency VIN = Nom, P Out RX = 3 W 74 %

ηFull-load efficiency VIN = Nom, IOUT = Max 71 %

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Modifications

SLUUBJ2–October 2016

bq50002A Wireless Power TX EVM

3 Modifications

See the datasheet for bq50002A (SLUSBW1) or bq500511A (SLUSCN3) when changing components.

FOD – R27 threshold and R26 FOD_Cal (see Section 6.3.8)

4 Connector and Test Point Descriptions

4.1 Input/Output Connections

The connection points are described in Section 4.1.1 through Section 4.1.4.

4.1.1 J1 – VIN

Input power 5 V ±500 mV, return at J3.

4.1.2 J2 – USB Input

USB input connection.

4.1.3 J3 –GND

Return for input power, input at J1.

4.1.4 J4 – Serial Interface

I2C interface connection to communicate with the IC. Used with bqStudio tool to monitor behavior

Connector and Test Point Descriptions

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4.2 Test Point Descriptions

The test points are described in Section 4.2.1 through Section 4.2.56.

4.2.1 TP1 – CS+

Current sense amplifier positive input.

4.2.2 TP2 – CS–

Current sense amplifier negative input.

4.2.3 TP3 – VIN

Input power, 5 V ±500 mV.

4.2.4 TP4 – GND

Return for input power.

4.2.5 TP5 –DMIN1

Modulation signal input from coil for DEMOD Channel 1.

4.2.6 TP6 –SW1

Switch node of the half bridge MOSFETs.

4.2.7 TP7 – GND

Low-noise ground test point (TP).

4.2.8 TP8 –Low-Noise Analog Ground

Low-noise ground TP.

4.2.9 TP9 – GND

Low-noise ground TP.

4.2.10 TP10 – GND

Low-noise ground TP.

4.2.11 TP11 – PGND

Return for SW1.

4.2.12 TP12 – DMIN2

Modulation signal input from coil for DEMOD Channel 2.

4.2.13 TP13 – PEAK

Peak detection.

4.2.14 TP14 – SW2

Switch node of the half-bridge MOSFETs.

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Connector and Test Point Descriptions

SLUUBJ2–October 2016

bq50002A Wireless Power TX EVM

4.2.15 TP15 – BP3

Output of 3-V LDO.

4.2.16 TP16 – TANK

Coil signal at junction between transmitter coil and resonant capacitors.

4.2.17 TP17 – PGND

Return for SW2.

4.2.18 TP18 – PWM1/CLK

Input to control half-bridge MOSFETs connected to SW1 when PWM_CTRL is high. The operating

frequency/pulse width changes up or down depending on every rising edge of this periodic signal when

PWM_CTRL is low.

4.2.19 TP19 – PWM2/UPDN

Input to control half-bridge MOSFETs connected to SW2 when PWM_CTRL is high. Increase or decrease

power transfer when PWM_CTRL is low.

4.2.20 TP20 – CSO

Output of the current sense amplifier.

4.2.21 TP21 – DMOUT1

Demodulated 2-kHz bit stream from demodulation channel 1.

4.2.22 TP22 – DMOUT2

Demodulated 2-kHz bit stream from demodulation channel 2.

4.2.23 TP23 – BUZZ

DC output when power transfer is started. Can be used to drive a DC style buzzer or LED. See data sheet

for more information.

4.2.24 TP24 – LED_B

Status indication, typically RED.

4.2.25 TP25 – LED_A

Status indication, typically GREEN.

4.2.26 TP26 – LED_C

Status indication, typically ORANGE.

4.2.27 TP27 – LED_MODE

LED mode selection.

4.2.28 TP28 – T_SENSE

Temperature sensing for safety shutdown.

Connector and Test Point Descriptions

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4.2.29 TP29 – FOD_CAL

FOD calibration.

4.2.30 TP30 – FOD_THR

FOD threshold.

4.2.31 TP31 – V_SENSE

Input voltage sense.

4.2.32 TP32 – FLIM

Leave floating to conform to WPC specification 205-kHz maximum operating frequency.

4.2.33 TP33 – ILIM

ILIM can be used to restrict the input current in order to operate with a limited input voltage source. Leave

this pin open if no fixed current limit should be used.

4.2.34 TP34 – Reserved IC Pin 5

Unused.

4.2.35 TP35 – Unused IC Pin 7

Leave this pin open.

4.2.36 TP36 – Unused IC Pin 25

Leave this pin open.

4.2.37 TP37 – Unused IC Pin 27

Leave this pin open.

4.2.38 TP38 - Unused IC Pin 17

Leave this pin open.

4.2.39 TP39 - Unused IC Pin 6

Leave this pin open.

4.2.40 TP40 - Unused IC Pin 24

Leave this pin open.

4.2.41 TP41 - Unused IC Pin 26

Leave this pin open.

4.2.42 TP42 - Unused IC Pin 18

Leave this pin open.

4.2.43 TP43 – CLK_IN

CLK_OUT signal from the internal oscillator of the bq50002A.

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Connector and Test Point Descriptions

SLUUBJ2–October 2016

bq50002A Wireless Power TX EVM

4.2.44 TP44 – MODE

Control of frequency/pulse width of the internal generated oscillator signal.

4.2.45 TP45 – SDA

I2C data.

4.2.46 TP46 – SCL

I2C clock.

4.2.47 TP47 – 3-V Rail Resistor Divider

4.2.48 TP49 – Floating Test Point

4.2.49 TP50 – Floating Test Point

4.2.50 TP51 – GND

4.2.51 TP52 - Floating Test Point

4.2.52 TP53 - Floating Test Point

4.2.53 TP54 – GND

4.2.54 TP55 – Floating Test Point

4.2.55 TP56 – Floating Test Point

4.2.56 TP57 – GND

2.00

R11

TP1 TP2

2.2µF

TP6

0.047µF

C10

0.1µF

22µF

0.2

PGND

0.1µF

C11

22µF

0.1µF

C14

0.1µF

TP14

0.1µF

C20

TP15

0.047µF

C18

0.2

R16

PGND

0.022µF

C12

249k

R10

2700pF

C15

GNDGND

TP12

69.8k

TP5

1000pF

10.0k

GND

+5 VIN

TP3

1.00k

- N/C -

22µF

Green

TP4

NT1

Net-Tie

GND

PGNDGND

USB

0.02

R18

PGND

GND

1µF

GND GND

760308111

TP17

PGND

TP11

TP18

TP19

GND

0.47µF

C25

GND

0.1µF

C24

0.1µF

C22

TP20

0.1µF

C23

GND

1.00k

R19

Green

TP25

1.00k

TP24

GND

1.00k

R17 TP26

Orange

D410.0k

R28

TP23

BUZ1

TP34

TP39

TP35

TP37

TP41

TP36

TP40

GND

TP38

TP42

Red

TP22

TP21

GND

TANK

TP16

TANK

10.0k

R20

GND GNDGND GND

200k

R23

100k

R27

100k

R21

24.9k

R25

100k

R22

93.1k

R26

0.1µF

C27

TP30TP27 TP29TP28

76.8k

R13

10.0k

R14

0.1µF

C28

GND

TP31

VSENSE

FOD_CALTSENSELED MODE FOD THR

PEAK

VSENSE

FOD_CAL

LED MODE

FOD THR

TSENSE

10.0k

R24

10.0k

R12

VCC_3

JTAG

GND

910

1112

1314

1000pF

C26

47k

R15

GND

VCC_3

JTAG_DATA

JTAG_CLK

SCL

SDA

JTAG_CLK

JTAG_DATA

VCC_3 VCC_5

VCC_5

GND

TP13

2200pF

C13

113k

7.50k

PEAK

VCC_3

GND

SDA

SCL

22-05-3041

2.2µF

C21

GND

TP33

TP32

TP7 TP8 TP9 TP10

TP44

TP43

10.0k

R32

GND

10.0k

R33

TP47

TP50

10.0k

R31

VCC_3

GND

TP53

TP51 TP54 TP57

TP56TP49 TP52 TP55

GND

TP45

TP46

10.0k

R30

GND

10.0k

R29

VCC_3

0.1µF

C16

0.1µF

C17

0.1µF

C19

10.0k ohm

t°

NTC1

LED_C

LED_B

LED_A

BUZZ

LED_A

LED_B

LED_C

VCC_3

GND

DMIN1

DMIN2

DMIN1

DMIN2

GND

PWM1-CLK_IN

PWM_CTRL

BP3

GND 5

GND 6

DMOUT 2

DMOUT 1

CLK_OUT

MODE

DMIN 1 11

DMIN 2 12

GND 13

PVIN 2

BOOT 2 16

SW 2 17

SW 2 18

SW 2 19

PGND 20

PGND 21

PGND 22

SW 1 23

SW 1 24

BOOT 1 25

SW 1 26

PVIN 1

CSN

CSP

CSO

PWM2/UPDN

PAD 33

BQ50002ARHBR

PWM1/CLK_OUT 1

PWM2/UP_DN 2

ISENSE 3

RESERVED

VPEAK

VSENSE

FOD_CAL

LED_A 11

LED_B 12

TSENSE

LED_C 14

BUZZ 15

MODE 16

RESERVED

CLK_IN 21

COMM1 22

COMM2 23

SDA

28 SCL

VCORE

DVSS 31

DVCC

FLIM

LED_MODE

FOD_THR

AVSS 36

DRV_EN 37

PWM_CTRL 38

AVSS 39

AVCC

PAD 41

BQ500511ARHAR

Schematic and Bill of Materials

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bq50002A Wireless Power TX EVM

5 Schematic and Bill of Materials

This section includes the schematics and bill of materials for the EVM.

Figure 1 illustrates the schematics for this EVM.

Figure 1. bq50002AEVM-607 Schematic

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Schematic and Bill of Materials

SLUUBJ2–October 2016

bq50002A Wireless Power TX EVM

Table 2 contains the BOM for this EVM.

(1) Unless otherwise noted in the Alternate Part Number and/or Alternate Manufacturer columns, all parts may be substituted with equivalents.

Table 2. Bill of Materials(1)

Designator Qty Value Description Package Reference Part Number Manufacturer Alternate Part Number Alternate Manufacturer

U1 1 Low-Cost 5-V Wireless Power Transmitter Controller for WPC v1.2

A11 Transmitters, RHA0040D RHA0040A BQ500511ARHAR Texas Instruments BQ500511ARHAT Texas Instruments

U2 1 Low-Cost 5-V Wireless Power Transmitter Analog Front End for

WPC v1.2 A11 Transmitters RHB0032E RHB0032E BQ50002ARHBR Texas Instruments BQ50002ARHBT Texas Instruments

L1 1 6.3uH Inductor, 6.3 µH, 13 A, 0.017 ohm, TH TH, Dia 53mm, Pin

spacing 14.2mm 760308111 Wurth Elektronik

BUZ1 1 Buzzer, Piezo, 4kHz, 12.2mm, TH 12.2x4.0mm PS1240P02CT3 TDK

C1, C2 2 1uF CAP, CERM, 1 µF, 25 V, +/- 10%, X7R, 0603 0603 GRM188R71E105KA12D Murata

C3 1 2.2uF CAP, CERM, 2.2 µF, 10 V, +/- 10%, X7R, 0603 0603 GRM188R71A225KE15D Murata

C4, C6 2 22uF CAP, CERM, 22uF, 25V, +/-20%, X5R, 0805 0805 GRM21BR61E226ME44 Murata

C5, C7, C11,

C20, C22,

C23, C24,

C27

8 0.1uF CAP, CERM, 0.1uF, 25V, +/-10%, X7R, 0603 0603 C1608X7R1E104K TDK

C8 1 22uF CAP, CERM, 22uF, 25V, +/-10%, X7R, 1210 1210 GRM32ER71E226KE15L Murata

C9, C26 2 1000pF CAP, CERM, 1000pF, 50V, +/-5%, C0G/NP0, 0603 0603 C1608C0G1H102J TDK

C10, C18 2 0.047uF CAP, CERM, 0.047uF, 50V, +/-10%, X7R, 0603 0603 C1608X7R1H473K TDK

C12 1 0.022uF CAP, CERM, 0.022 µF, 50 V, +/- 10%, X7R, 0603 0603 C1608X7R1H223K TDK

C13 1 2200pF CAP, CERM, 2200 pF, 50 V, +/- 10%, X7R, 0603 0603 GRM188R71H222KA01D Murata

C14, C16,

C17, C19 4 0.1uF CAP, CERM, 0.1 µF, 25 V, +/- 5%, C0G/NP0, 1206 1206 C3216C0G1E104J TDK

C15 1 2700pF CAP, CERM, 2700pF, 50V, +/-5%, C0G/NP0, 0603 0603 C1608C0G1H272J TDK

C21 1 2.2uF CAP, CERM, 2.2uF, 16V, +/-10%, X5R, 0603 0603 GRM188R61C225KE15D Murata

C25 1 0.47uF CAP, CERM, 0.47uF, 10V, +/-10%, X7R, 0603 0603 GRM188R71A474KA61D Murata

D1, D6 2 Green LED, Green, SMD 1.6x0.8x0.8mm LTST-C190KGKT Lite-On

D2, D3 2 100V Diode, Switching, 100V, 0.2A, SOD-323 SOD-323 MMDL914-TP Micro Commercial

Components

D4 1 Orange LED, Orange, SMD 1.6x0.8x0.8mm LTST-C190KFKT Lite-On

D5 1 Red LED, Red, SMD Red LED, 1.6x0.8x0.8mm LTST-C190CKT Lite-On

NTC1 1 10.0k ohm Thermistor NTC, 10.0k ohm, 1%, 0603 0603 NTCG163JF103F TDK

R1 1 113k RES, 113 k, 0.1%, 0.1 W, 0603 0603 RG1608P-1133-B-T5 Susumu Co Ltd

R2 1 7.50k RES, 7.50 k, 0.1%, 0.1 W, 0603 0603 RT0603BRD077K5L Yageo America

R3, R5 2 0 RES, 0 ohm, 5%, 0.25W, 1206 1206 CRCW12060000Z0EA Vishay-Dale

R4, R9, R17,

R19 4 1.00k RES, 1.00 k, 1%, 0.1 W, 0603 0603 CRCW06031K00FKEA Vishay-Dale

R6 1 69.8k RES, 69.8k ohm, 1%, 0.1W, 0603 0603 RC0603FR-0769K8L Yageo America

R7, R12,

R20, R24,

R28

5 10.0k RES, 10.0k ohm, 1%, 0.1W, 0603 0603 RC0603FR-0710KL Yageo America

R8, R16 2 0.2 RES, 0.2 ohm, 5%, 0.25W, 0805 0805 ERJ-S6SJR20V Panasonic

R10 1 249k RES, 249 k, 1%, 0.1 W, 0603 0603 RC0603FR-07249KL Yageo America

Schematic and Bill of Materials

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Table 2. Bill of Materials(1) (continued)

Designator Qty Value Description Package Reference Part Number Manufacturer Alternate Part Number Alternate Manufacturer

R11 1 2.00 RES, 2.00, 1%, 0.1 W, 0603 0603 CRCW06032R00FKEA Vishay-Dale

R13 1 76.8k RES, 76.8 k, 0.1%, 0.1 W, 0603 0603 RG1608P-7682-B-T5 Susumu Co Ltd

R14 1 10.0k RES, 10.0 k, 0.1%, 0.1 W, 0603 0603 RT0603BRD0710KL Yageo America

R15 1 47k RES, 47k ohm, 5%, 0.1W, 0603 0603 RC0603JR-0747KL Yageo America

R18 1 0.02 RES, 0.02, 0.5%, 0.5 W, 1206 sense 1206 sense LVK12R020DER Ohmite

R21, R22,

R27 3 100k RES, 100 k, 1%, 0.1 W, 0603 0603 RC0603FR-07100KL Yageo America

R23 1 200k RES, 200 k, 1%, 0.1 W, 0603 0603 RC0603FR-07200KL Yageo America

R25 1 24.9k RES, 24.9 k, 1%, 0.1 W, 0603 0603 RC0603FR-0724K9L Yageo America

R26 1 93.1k RES, 93.1 k, 1%, 0.1 W, 0603 0603 RC0603FR-0793K1L Yageo America

C28 0 0.1uF CAP, CERM, 0.1uF, 25V, +/-10%, X7R, 0603 0603 C1608X7R1E104K TDK

L2 0 Coupled inductor, 2.5 A, 0.034 ohm, SMD SMD, 5x5mm DLW5BTM102TQ2K Murata

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