Texas Instruments bq51013AEVM-765 User Manual Download Page 2

Applications

www.ti.com

List of Tables

1

bq51013AEVM-765 Electrical Performance Specifications

...........................................................

2

2

Bill of Materials

..............................................................................................................

6

1

Applications

The bq51013AEVM-765 evaluation module (EVM) demonstrates the receiver portion of the bqTESLA™
wireless power system. This receiver EVM is a complete receiver-side solution that produces 5 V out at up
to 1 A when coupled with the bqTESLA™ transmitter. The bq51013AEVM-765 device shown on this EVM
along with external components that support the device for a complete solution.

The bqTESLA™ receiver can be used in any number of low-power battery portable devices as a power
source for charging. With contact-free charging capability, no connections to the device are needed.

Output voltage of 5 V up to 1 A

External adapter switchover and control circuit

Low-profile, external pick-up coil

Frame is configured to provide correct receiver to transmitter spacing.

Room above coil for testing with battery, key for tuning

Adjustable resistor R16 can be used to set max output current

2

bq51013AEVM-765 Electrical Performance Specifications

Table 1

provides a summary of the bq51013AEVM-765 performance specifications. All specifications are

given for an ambient temperature of 25°C.

Table 1. bq51013AEVM-765 Electrical Performance Specifications

Parameter

Notes and Conditions

Min

Typ

Max

Unit

INPUT CHARACTERISTICS

V

IN

Input Voltage

Typical V-rectified voltage at TP12

4

5.5

8

V

V

ADAPTER

Adapter Input Voltage

4

7

20

V

Input Overvoltage

Voltage at V-rectified

15

V

OVP

Protection

OUTPUT CHARACTERISTICS

V

OUT

V J3 to J4

5

V

I

OUT

I J3

1

A

SYSTEMS CHARACTERISTICS

F

S

Switching Frequency

110

205

kHz

Eff

Efficiency

Output current 500 mA

74

%

3

Modifications

See the data sheet (

SLUSAY6

when changing components. To aid in such customization of the EVM, the

board was designed with devices having 0603 or larger footprints. A real implementation likely occupies
less total board space.

Note that changing components can improve or degrade EVM performance.

4

Connector and Test Point Descriptions

4.1

Input/Output Connections

The connections points are described in the following paragraphs.

2

bq51013AEVM-765 Evaluation Module

SLUU911 – June 2012

Submit Documentation Feedback

Copyright © 2012, Texas Instruments Incorporated

Summary of Contents for bq51013AEVM-765

Page 1: ...Equipment 6 6 2 Equipment Setup 7 6 3 Load Step 8 6 4 Load Dump 9 6 5 V Adapter Input 9 6 6 Start Up 10 6 7 Disable Shutdown 10 6 8 System Efficiency 11 6 9 Dynamic Rectifier Control Dynamic Efficienc...

Page 2: ...EVM 765 Electrical Performance Specifications Table 1 provides a summary of the bq51013AEVM 765 performance specifications All specifications are given for an ambient temperature of 25 C Table 1 bq510...

Page 3: ...able signals that controls the Adapter and Wireless power transfer Low on EN2 enables the adapter power transfer also High disables Comm IILIM Default Shorting jumper setting is Low 4 2 3 JP3 TS Enabl...

Page 4: ...ve connects to the integrated circuit IC 4 3 9 TP9 Boot 2 Boot Capacitor This bootstrap capacitor 2 drive connects to the IC 4 3 10 TP10 CHG Charge This output signal indicates that the output current...

Page 5: ...s 5 Schematic and Bill of Materials NOTE For Reference Only See Table 2 for Specific Values Figure 1 HPA765AEVM Schematic 5 SLUU911 June 2012 bq51013AEVM 765 Evaluation Module Submit Documentation Fee...

Page 6: ...1 4 in Cermet 12 Turn 0 25x0 17 3266W 1 204LF Bourns Top Adjust 1 R4 110 Resistor Chip 1 16W 1 0603 Std Std 0 R6 R12 Open Resistor Metal Film 1 4 watt 1 1206 CRCW120624R0FKEA Vishay 1 R7 1 50K Resist...

Page 7: ...ichannel oscilloscope with appropriate probes is used to observe the RECT voltage at TP12 and other signals 6 1 6 Recommended Wire Gauge For proper operation 22 AWG wire is recommended when connecting...

Page 8: ...s must be Kelvin connected at the pin to the point of interest The output load is recommended to be a variable power resistor or electronic load 6 3 Load Step The procedure for load step is as follows...

Page 9: ...oltage as shown in the following illustration Figure 4 Load Dump 500 mA to 0 mA 6 5 V Adapter Input The procedure for external adapter wired adapter testing is as follows Set up the test bench as desc...

Page 10: ...6 Start Up 6 7 Disable Shutdown The jumper JP1 EN1 sends an End Power Transfer to Transmitter Shutdown With unit operating normally move jumper JP1 from Low to High position LED D1 turn OFF output vol...

Page 11: ...total output currents This is demonstrated with the higher value for R I lim resulting in lower total output current See data sheet for additional information regarding Dynamic Efficiency Scaling Figu...

Page 12: ...LIM 10 mA AD AD_EN TS CTRL EN1 EN2 TERM FOD 1 mA CHG 10 mA It is also recommended to have the following capacitance on RECT and OUT RECT 10 F OUT 1 F It is always good practice to place high frequency...

Page 13: ...ng a 2 layer 2 oz copper clad PCB 2 1 in 2 1 in area to provide the user easy viewing probing and evaluating of the bq51013A IC in a practical double sided application Moving components to both sides...

Page 14: ...AEVM 765 Assembly Drawings and Layout www ti com Figure 12 Top Copper Layer 14 bq51013AEVM 765 Evaluation Module SLUU911 June 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorp...

Page 15: ...om bq51013AEVM 765 Assembly Drawings and Layout Figure 13 Bottom Copper Layer 15 SLUU911 June 2012 bq51013AEVM 765 Evaluation Module Submit Documentation Feedback Copyright 2012 Texas Instruments Inco...

Page 16: ...tion about the bqTESLA products visit the Wireless Power Solutions folder on the TI Web site at http www ti com ww en analog wireless_power_solutions 16 bq51013AEVM 765 Evaluation Module SLUU911 June...

Page 17: ...ncy energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC or ICES 003 rules which are designed to provide reasonable protection against radio fr...

Page 18: ...na type and its gain should be so chosen that the equivalent isotropically radiated power e i r p is not more than that necessary for successful communication This radio transmitter has been approved...

Page 19: ...roduct only after you obtained the license of Test Radio Station as provided in Radio Law of Japan with respect to this product or 3 Use of this product only after you obtained the Technical Regulatio...

Page 20: ...property damage personal injury or death If there are questions concerning these ratings please contact a TI field representative prior to connecting interface electronics including input power and in...

Page 21: ...or use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury or death unless officers of the parties have...

Reviews: