Texas Instruments bq51050BEVM-764 User manual

User's Guide
SLUUA25C–October 2012–Revised June 2013
bq51050BEVM-764, Integrated Wireless Power Li-Ion
Charger Receiver
The bq51050BEVM (HPA764-002) wireless power receiver evaluation kit from TI is a high-performance,
easy-to-use development kit for the design of wireless power solutions. It helps designers to evaluate the
operation and performance of the bq51050B (WCSP package), a direct Li-Ion charge controller for
wireless power transfer. The bq51050B device provides the AC/DC power conversion, integrates the
digital controller required to comply with the Qi v1.1 communication protocol, and Li-Ion charge controller.
The kit speeds up the development of end-use applications.
Contents
1 Introduction .................................................................................................................. 2
2 Considerations with this EVM ............................................................................................. 2
3 Modifications ................................................................................................................. 2
4 Recommended Operation Condition ..................................................................................... 3
5 Equipment and EVM setup ................................................................................................ 3
5.1 Schematic ........................................................................................................... 3
5.2 Connector and Test Point Descriptions ......................................................................... 4
5.3 Jumpers and Switches ............................................................................................ 4
5.4 Test Point Descriptions ............................................................................................ 4
5.5 Pin Description of the IC .......................................................................................... 6
6 Test Procedure .............................................................................................................. 6
6.1 Definition ............................................................................................................ 6
6.2 Recommended Test Equipment ................................................................................. 7
6.3 Equipment Setup ................................................................................................... 7
6.4 Procedure ........................................................................................................... 9
7 Test Results ................................................................................................................ 10
7.1 Start up to Fast-Charge Mode .................................................................................. 10
7.2 Start up to Pre-Charge Mode ................................................................................... 10
7.3 Pre-charge to Fast-Charge Transition ......................................................................... 11
7.4 Fast Charge to Taper and Termination Transition ........................................................... 11
7.5 Efficiency Data .................................................................................................... 12
7.6 Thermal Performance ............................................................................................ 13
8 Layout and Bill of Material ................................................................................................ 14
8.1 Layout .............................................................................................................. 14
8.2 Bill of Materials (BOM) ........................................................................................... 20
List of Figures
1 HPA764-Revision B Schematic ........................................................................................... 3
2 Test Set up .................................................................................................................. 7
3 Battery Emulator ........................................................................................................... 8
4 Start-Up to Fast-Charge Mode .......................................................................................... 10
5 Start-Up to Pre-charge Mode ........................................................................................... 10
6 Pre-charge to Fast-Charge Transition ................................................................................. 11
7 Fast Charge to Taper and Termination Transition ................................................................... 11
8 Efficiency Versus Output Power (AC Input to DC Output)........................................................... 12
bqTESLA is a trademark of Texas Instruments, Inc..
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Introduction www.ti.com
9 Efficiency Versus Fast Charge Current (AC Input to DC Output)................................................... 12
10 Thermal Image............................................................................................................. 13
11 bq51050BEVM Layout Example ........................................................................................ 15
12 bq51050BEVM-764 Top Assembly ..................................................................................... 16
13 bq51050BEVM-764 Top Layer .......................................................................................... 17
14 bq51050BEVM-764 Bottom Copper Layer ............................................................................ 18
15 bq51050BEVM-764 Bottom Assembly ................................................................................. 19
List of Tables
1 bq51050BEVM-764 Electrical Performance Specifications ........................................................... 3
2 Pin Description .............................................................................................................. 6
3 bq51050BEVM-764 Bill of Materials ................................................................................... 20
1 Introduction
The bq5105x is an advanced, secondary-side direct Li-Ion charge-controller device for wireless power
transfer in portable applications. The bq5105x device provides the AC/DC power conversion, integrates
the digital controller required to comply with the Qi v1.1 communication protocol, and Li-Ion charge
controller. Together with the bq500210 primary-side controller, the bq5105x enables a complete contact-
free power transfer system for a wireless direct battery charger solution. By utilizing near-field inductive
power transfer, the secondary coil embedded in the portable device can pick up the power transmitted by
the primary coil. The AC signal from the secondary coil is then rectified and conditioned to apply power
directly to the battery. Global feedback is established from the secondary to the primary in order to
stabilize the power transfer process. This feedback is established by utilizing the Qi v1.1 communication
protocol.
The bq5105x devices integrate a low-impedance synchronous rectifier, low-dropout regulator, digital
control, Li-Ion charger controller, and accurate voltage and current loops. The entire power stage (rectifier
and LDO) utilize low-resistive NMOS FET’s (100-mΩtypical RDS(on)) ensuring high efficiency and low
power dissipation.
2 Considerations with this EVM
The bq51050BEVM-764 evaluation module (HPA764-002) demonstrates the receiver portion of the
bqTESLA™ wireless power system. This receiver EVM is a complete receiver-side solution that charges
single-cell Li-Ion batteries with up to 1-A charge current.
• The bqTESLA receiver is used in any number of low-power battery portable devices as a direct battery
charger. With contact-free charging capability, no connections to the device are needed.
• Regulation voltage of 4.2 V, up to 1-A charge current
• 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
• Option to adjust the charge current using variable resistor R16
• Adjustable resistor R13 is used to set termination current.
• Temperature sensing can be adjusted using R3
3 Modifications
Refer to the datasheet 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.
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1
1
1
1
1
Ω
Ω
www.ti.com Recommended Operation Condition
4 Recommended Operation Condition
Table 1 provides a summary of the bq51050BEVM-764 performance specifications. All specifications are
given for an ambient temperature of 25°C.
Table 1. bq51050BEVM-764 Electrical Performance Specifications
PARAMETER TEST CONDITION MIN TYP MAX UNIT
VIN Input voltage range 4.0 10.0 V
ICOMM-C Current limit during communication 330 390 420 mA
IIN Input current range 1.5 A
IOUT Output current range Current limit programming range 1.5 A
VOUT(REG) Regulation output voltage ILOAD = 1000 mA 4.16 4.2 4.22 V
FsSwitching frequency 110 205 kHz
Efficiency AC-DC efficiency 1-A fast charge current, VBAT = 4.2 V 93%
5 Equipment and EVM setup
5.1 Schematic
Figure 1. HPA764-Revision B Schematic
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Equipment and EVM setup www.ti.com
5.2 Connector and Test Point Descriptions
The connection points are described in the following paragraphs.
5.2.1 J1 – AD External Adapter Input, J2-GND
Power can not be provided to simulate an external adapter applied to the receiver in this bq51050BEVM-
764 (HPA764-002).
5.2.2 J3 – Output Voltage, J4-GND
Output voltage regulation is 4.2 V in wireless power mode up to 1 A; the adapter option is not supported in
this HPA764-002.
5.2.3 J5 – TS and Return Connector
External connection for temperature sense resistor, see the datasheet for additional information.
5.2.4 J6 – Programming Connector
This connector is populated and is only useful at the factory level for programming the IC.
5.3 Jumpers and Switches
The control jumpers are described in the following paragraphs.
5.3.1 JP1 – EN1 Enable 1
Not populated in this EVM (HPA764-002).
5.3.2 JP2 – EN2 Enable 2
Enable signal input that allows the system to assert wireless charging. If EN2 is set to low, wireless
charging is enabled unless AD voltage > 3.6 V. If EN2 is set to High, AD mode disabled, wireless charging
always enabled. Used when OTG plus wireless charging is active.
5.3.3 JP3 – TS Enable or Disable
This jumper enables the TS adjustment feature using R3. The disable position sets voltage at the TS pin
to a safe value. The default shorting jumper setting is disabled.
5.3.4 JP4 – Pull-Up to Out or Vz
EN2 pull-up can be powered from OUT or RECT. Vz is derived from RECT through a resistor and Zener
diode D2.
5.3.5 JP5 – Termination
This jumper, along with R14 and R13, sets the termination current. See the bq51050B datasheet for
additional information. The default shorting jumper setting is installed.
5.3.6 JP6 – ILIM Fix or ADJ
Max output current is set by ILIM pin. In the FIX position, the current is set to a fixed value. In the ADJ
position the current is set by R16.
5.4 Test Point Descriptions
The test points are described in the following paragraphs.
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www.ti.com Equipment and EVM setup
5.4.1 TP1 – AD-EN
This push-pull driver for the external PFET connects the adapter and the output from the bq5101x. This is
not useful for the bq5105x.
5.4.2 TP2 – AC Input 2
This is the test point for measuring AC voltage applied to the EVM from the receiver coil.
5.4.3 TP3 – COM2 Communication 2 Drive
Communication driver signal, open-drain output connected to communication capacitor.
5.4.4 TP4 – AC Input 1
This is the test point for measuring AC voltage applied to the EVM from the receiver coil.
5.4.5 TP5 – CLMP 1
Overvoltage clamp driver signal, open-drain output is connected to OVP capacitor.
5.4.6 TP6 – CLMP 2
Overvoltage clamp drive signal, open-drain output is connected to OVP capacitor.
5.4.7 TP7 – OUT Output Voltage
This test point is the output voltage from the bq51050B.
5.4.8 TP8 – Boot-1 Boot Capacitor
This bootstrap capacitor 1 drive connects to the integrated circuit (IC).
5.4.9 TP9 – Boot-2 Boot Capacitor
This bootstrap capacitor 2 drive connects to the IC.
5.4.10 TP10 – CHG Charge
This output signal indicates that the output current is being delivered to OUT, the open-drain output.
5.4.11 TP11 – AC1 IC input
This is the AC input to the IC from series capacitors.
5.4.12 TP12 – Rectified Voltage
The input AC voltage is rectified into unregulated DC voltage; additional capacitance is used to filter the
voltage before the regulator.
5.4.13 TP13, TP14, TP15 – GND
These are the ground test points.
5.4.14 TP16 – TS Temp Sensor
This is the connection point for external thermistor; see the data sheet for additional information.
5.4.15 TP17 – FET Open Detection (FOD)
Input for rectified power measurement, pin F2 of the IC. FOD for the bq51050B.
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5.4.16 TP18– ILIM
Programming pin for over current limit, pin G1 of the IC.
5.5 Pin Description of the IC
Table 2. Pin Description
PIN Number (WCSP) bq51050B
A1, A2, A3, A4 PGND
B1, B2 AC2, AC2
B3, B4 AC1, AC1
C1 BOOT2
C2, C3 RECT
C4 BOOT1
D1, D2, D3, D4 BAT
E1 COM2
E2 CLMP2
E3 CLMP1
E4 COM1
F1 TS_CTRL
F2 FOD
F3 AD-EN
F4 CHG
G1 ILIM
G2 EN2
G3 TERM
G4 AD
6 Test Procedure
This procedure describes test configuration of the bq51050B evaluation board (HPA764-002) for bench
evaluation.
6.1 Definition
The following naming conventions are used:
VXXX : External voltage supply name (VADP, VBT, VSBT)
LOADW: External load name (LOADR, LOADI)
V(TPyy): Voltage at internal test point TPyy. For example, V(TP02) means the voltage at TP02.
V(Jxx): Voltage at header Jxx
V(TP(XXX)): Voltage at test point XXX. For example, V(ACDET) means the voltage at the test point which
is marked as ACDET.
V(XXX, YYY): Voltage across point XXX and YYY.
I(JXX(YYY)): Current going out from the YYY terminal of header
JXX. Jxx(BBB): Terminal or pin BBB of header xx.
JPx ON : Internal jumper Jxx terminals are shorted. JPx OFF: Internal jumper Jxx terminals are open.
JPx (-YY-) ON: Internal jumper Jxx adjacent terminals marked as YY are shorted.
Assembly drawings have location for jumpers, test points, and individual components.
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Wireless
Transmitter
A
V
PS bq51050BEVM
HPA764-002 PR1010
A
V
VOUT
GND
VIN
GND
www.ti.com Test Procedure
6.2 Recommended Test Equipment
The following equipment is needed to complete this test procedure.
6.2.1 Power Supplies
Two power supplies
• Power supply #1 (PS #1) capable of supplying 19 V at 1 A is required
• Power supply #2 (PS #2) capable of supplying up to 6 V at 5 A is required to power the battery
emulator.
6.2.2 Battery Emulator PR1010-002
Use the battery emulator shown in Figure 3 as a battery to test the charger.
6.2.3 Meters
Two DC voltmeters, one multimeter (Ohmmeter), and two DC ammeters are required.
6.2.4 Oscilloscopes
Not required. But can replace the multimeters
6.2.5 bqTesla Transmitter
Power for the bq510xxxEVM-764 receiver EVM is supplied through a bqTESLA transmitter
(bq500210EVM-689) or WPC-certified transmitter. The input AC voltage is applied to the receiver through
the coil located in the receiver bottom.
6.3 Equipment Setup
6.3.1 Test Set Up
The final assembly is tested using a bqTesla transmitter provided (bq5100210EVM-HPA689). Input
voltage to the transmitter is set to 19 VDC ±200 mV with a current limit of 1.0 A. Set the power supply to
OFF. Connect input power supply to HPA689 VIN (J1) and GND (J2) as shown on Figure 2. Place UUT on
transmitter coil. Unit under test will be placed in the center of HPA689 TX coil.
Other bqTesla transmitter base units are also acceptable for this test.
Figure 2. Test Set up
6.3.2 Battery Emulator
Adjust PS#2 to approximately 3.6 V and 3.5-A current limit to the input side (PS #2+/–) of the battery
emulator (Figure 3), then turn PS #2 off.
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Battery Range:
0 to 4.3 V,
Sink up to 4.5 V/(2.2 /2) 4.0 A maxΩ –
CONNECT TO CHARGER BAT+ TO BAT–
BAT+
BAT–
P/S+
GND
P/S Range:
0 to 4.5 V,
3 A max Current due to 1N5821
CONNECT TO POWER SOURCE
D1
1N5821
2
1
J2
PS#2 +
PS#2 –
R2
2.2, 25 W
12
12
TBH25P5R6
R1
2.2, 25 W
R3
0.1, 2 W 5 W–
Metal Strip
Sense Resistor
15FR100E
1
2
J1
BAT +
BAT –
Test Procedure www.ti.com
Figure 3. Battery Emulator
6.3.3 Jumper Settings
JP2 →EN2 and LOW shorted
JP3 →TS and EN shorted
JP4 →Pullup and Vz shorted
JP5 →Install
JP6 →ILIM and ADJ shorted
6.3.4 Voltage and Current Meters
• Connect ammeter to measure input current to transmitter
• Connect voltmeter to monitor input voltage of TX unit
• On UUT (receiver) a voltmeter is used to measure output voltage (battery voltage) at J3 (OUT) with
ground at J4 (GND).
• On UUT (receiver), connect ammeter to measure charge current.
6.3.5 TS: R3 Set Up
Connect ohmmeter across J5. Connect shorting jumper JP3 from TS to EN. Adjust R3 for a 10 kΩ±200-Ω
reading on the ohmmeter. (This allows the temperature sensing to operate in charge allowable region).
Make sure: JP3 →TS and EN shorted.
6.3.6 ILIM : R16 Set Up
Connect ohmmeter between JP6-ADJ and J2 (GND). Adjust R16 for 300 Ω±20-Ωreading on the
ohmmeter. (This allows the fast charge current to 1 A). Make sure: JP6 →ILIM and ADJ shorted.
6.3.7 ITERM : R13 Set Up
Connect ohmmeter between JP5 (end that is connected to R13 and R14) and J2 (GND). Adjust R13 for 5
kΩ±200-Ωreading on the ohmmeter. (This adjusts termination current to around 20% of fast charge
current, for 1-A fast charge current, termination current should be 200 mA). Make sure JP5 →Shorted.
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6.4 Procedure
6.4.1 Turn ON Operation
• Turn ON transmitter PS#1 (19 V)
• Transmitter – verify LED D2 is ON
• Turn ON emulator PS#2 (3.6 V)
• Put the receiver EVM on the transmitter coil and align them correctly
• After 5 s, verify that:
1. Transmitter – status LED D5 is flashing green ~ 1 s
2. You should hear a beep from the transmitter
3. Transmitter – LED D2 still ON
4. Receiver – LED D1 is ON
6.4.2 Pre-Charge Operation
• Adjust PS#2 to read 2.5 V across J3 and J4 (battery voltage)
• Verify the charging current is 200 mA ±20 mA
6.4.3 Fast-Charge Operation
• Adjust PS#2 to read 3.6 V across J3 and J4 (battery voltage).
• Verify the charging current is 1000 mA ±100 mA
6.4.4 Constant Voltage Charge Operation and Termination
• Adjust PS#2 to read 4.2 V ±50 mV across J3 and J4 ( Battery Voltage)
• Keep increasing the voltage on PS#2 and observe the charging current decreases (constant voltage
phase)
• Keep increasing the voltage on PS#2 until you reach and observe the charging current approximately
200 mA ± 20 mA (constant voltage phase)
• The charge should terminate after you reach the 200 mA ±200mA level
6.4.5 Efficiency Test
• Adjust PS#2 to read 3.6 V ±50 mV across J3 and J4 ( Battery Voltage)
• Remove the receiver and reinstall it
• Verify the charging current is 1000 mA ±100 mA
• Verify that input current to TX is less than 350 mA ±30 mA with input voltage at 19 VDC
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5 V/div
TP2-AC-IN
TP12-V-RECT
I-BAT
5 V/div
1 A/div
200 ms/div
5 V/div
TP2-AC-IN
TP12-V-RECT
I-BAT
5 V/div
1 A/div
200 ms/div
Test Results www.ti.com
7 Test Results
7.1 Start up to Fast-Charge Mode
With the power supply off, connect supply to the bqTESLA transmitter.
• Place the bqTESLA receiver on the transmitter
• Connect battery emulator to J3 with GND J4
• Power TX with 19 V
• Trigger scope sweep on I-BAT
The test results shown in Figure 4 are taken under 19-V input, 3.7-V battery and 1000-mA fast charge
current.
Figure 4. Start-Up to Fast-Charge Mode
7.2 Start up to Pre-Charge Mode
With the power supply off, connect the supply to the bqTESLA transmitter.
• Place the bqTESLA receiver on the transmitter
• Connect the battery emulator to J3 with GND J4
• Power TX with 19 V
• Trigger scope sweep on I-BAT
The test results shown in Figure 5 are taken under 19-V input, 2-V battery and 200-mA pre-charge
current.
Figure 5. Start-Up to Pre-charge Mode
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TP2-AC-IN
TP12-V-RECT
I-BAT
5 V/div
5 V/div
1 A/div
1 s/div
5 V/div
TP2-AC-IN
TP12-V-RECT
I-BAT
5 V/div
1 A/div
500 ms/div
www.ti.com Test Results
7.3 Pre-charge to Fast-Charge Transition
With the power supply off, connect the supply to the bqTESLA transmitter.
• Place the bqTESLA receiver on the transmitter
• Connect the battery emulator to J3 with GND J4
• Power TX with 19 V
• Adjust the battery emulator voltage to 2 V (pre-charge mode)
• Increase the battery emulator voltage until exiting the pre-charge mode (200 mA) and enter fast-charge
mode (1000 mA)
• Trigger scope sweep on I-BAT
The test results shown in Figure 6 shows pre-charge to fast-charge mode transition
Figure 6. Pre-charge to Fast-Charge Transition
7.4 Fast Charge to Taper and Termination Transition
With the power supply off, connect the supply to the bqTESLA transmitter.
• Place the bqTESLA receiver on the transmitter
• Connect the battery emulator to J3 with GND J4
• Power TX with 19 V
• Adjust the battery emulator voltage to 4.2 V (fast-charge mode, 1000 mA)
• Decrease the battery emulator voltage until exiting the fast-charge mode to taper and then termination
200 mA
• Trigger scope sweep on I-BAT
The test results shown in Figure 7 shows fast-charge to taper and termination modes transition.
Figure 7. Fast Charge to Taper and Termination Transition
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80
82
84
86
88
90
92
94
96
98
100
100 200 300 400 500 600 700 800 900 1000 1100
Efficiency (%)
ICHG (mA)
bq51050B
C002
0
10
20
30
40
50
60
70
80
90
100
0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50
Efficiency %)
Power (W)
bq51050B
C001
Test Results www.ti.com
7.5 Efficiency Data
7.5.1 Efficiency Versus Output Power (AC-DC)
Figure 8 illustrates the efficiency of the bq51050BEVM-764 during the full charge cycle. The regulation
voltage is 4.2 V, fast charge current is set to 1 A, and termination is set to 100 mA.
Figure 8. Efficiency Versus Output Power (AC Input to DC Output)
7.5.2 Efficiency Versus Fast Charge Current (AC-DC)
Figure 9 illustrates the efficiency of the bq51050BEVM-764 for different fast charging current levels. The
regulation voltage is 4.2 V, fast charge current is varied from 200 mA to 1 A, and the battery emulator
voltage is set to approximately 4.1 V.
Figure 9. Efficiency Versus Fast Charge Current (AC Input to DC Output)
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7.6 Thermal Performance
This section shows a thermal image of the bq51050BEVM-764 in fast-charge mode. A 4.0-V battery is
used at a charging rate of 1000 mA. There is no air flow and the ambient temperature is 25°C. The peak
temperature of the IC (57.5°C) is well below the maximum recommended operating condition listed in the
data sheet.
Figure 10. Thermal Image
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Layout and Bill of Material www.ti.com
8 Layout and Bill of Material
8.1 Layout
8.1.1 Printed-Circuit Board Layout Guideline
The primary concerns when laying out a custom receiver PCB are:
• AC1 and AC2 trace resistance
• OUT trace resistance
• RECT trace resistance
• GND connection
• Copper weight ≥2 oz
For a 1-A fast charge current application, the current rating for each net is as follows:
• AC1 = AC2 = 1.2 A
• BOOT1 = BOOT2 = 10 mA
• RECT = 1 A
• OUT = 1 A
• COM1 = COM2 = 300 mA
• CLAMP1 = CLAMP2 = 500 mA
• ILIM = 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 μF
• OUT ≥1μF
It is always a good practice to place high-frequency bypass capacitors of 0.1 μF next to RECT and OUT.
Figure 11 illustrates an example of a WCSP layout:
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Figure 11. bq51050BEVM Layout Example
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Layout and Bill of Material www.ti.com
8.1.2 Layout
Figure 12. bq51050BEVM-764 Top Assembly
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Figure 13. bq51050BEVM-764 Top Layer
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Layout and Bill of Material www.ti.com
Figure 14. bq51050BEVM-764 Bottom Copper Layer
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Figure 15. bq51050BEVM-764 Bottom Assembly
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8.2 Bill of Materials (BOM)
Table 3. bq51050BEVM-764 Bill of Materials
Count RefDes Value Description Size Part Number MFR
002
2 C1, C2 68nF Capacitor, Ceramic, 50V, X7R, 10% 0603 Std Std
1 C3 47nF Capacitor, Ceramic, 50V, X7R, 10% 0603 Std Std
1 C4 1800pF Capacitor, Ceramic, 50V, X7R, 10% 0603 Std Std
1 C5 100pF Capacitor, Ceramic, 50V, C0G, 5% 0603 Std Std
4 C6, C16, C18, C19 0.1uF Capacitor, Ceramic, 50V, X7R, 10% 0603 Std Std
3 C7, C17, C20 1.0uF Capacitor, Ceramic, 50V, X5R, 10% 0805 Std Std
2 C8, C13 22nF Capacitor, Ceramic, 50V, X7R, 10% 0603 Std Std
2 C9, C12 0.47uF Capacitor, Ceramic, 25V, X5R, 10% 0603 Std Std
2 C10, C11 0.01uF Capacitor, Ceramic, 50V, X7R, 10% 0603 Std Std
2 C14, C15 10uF Capacitor, Ceramic, 25V, X5R, 10% 1206 Std Std
1 D1 LTST-C190GKT Diode, LED, Green, 2.1-V, 20-mA, 6-mcd 0603 LTST-C190GKT Lite On
1 D2 5.1V Diode, Zener, 5.1V, 300mW SOD-523 BZT52C5V1T-7 Diodes, Inc.
5 J1– J5 PEC02SAAN Header, Male 2-pin, 100mil spacing, 0.100 inch x 2 PEC02SAAN Sullins
1 J6 N2510-6002-RB Connector, Male Straight 2x5 pin, 100mil spacing, 4 0.338 x 0.788 inch N2510-6002-RB 3M
Wall
4 JP2–JP4, JP6 PEC03SAAN Header, Male 3-pin, 100mil spacing, 0.100 inch x 3 PEC03SAAN Sullins
0 JP1 Open Header, Male 3-pin, 100mil spacing, 0.100 inch x 3 PEC03SAAN Sullins
1 JP5 PEC02SAAN Header, Male 2-pin, 100mil spacing, 0.100 inch x 2 PEC02SAAN Sullins
0 Q1 CSD75205W1015 MOSFET, Dual PChan, -20V, 1.2A, 190 milliOhm--See CSP 1x1.5mm CSD75205W1015 TI
note 8
0 R1 Open Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R2 200 Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R3 200k Potentiometer, 1/4 in. Cermet, 12-Turn, Top-Adjust 0.25x0.17 3266W-1-204LF Bourns
1 R4 110 Resistor, Chip, 1/16W, 1% 0603 Std Std
0 R5 Open 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 Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R8, R9 200 Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R10 499 Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R11 10.0k Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R14 1.0k Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R15 1.0k Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R13 20k Potentiometer, 1/4 in. Cermet, 12-Turn, Top-Adjust 0.25x0.17 3266W-1-203LF Bourns
1 R16 5k Potentiometer, 1/4 in. Cermet, 12-Turn, Top-Adjust 0.25x0.17 3266W-1-502LF Bourns
1 R17 42.2k Resistor, Chip, 1/16W, 1% 0603 Std Std
15 TP1–TP12, TP16– 5000 Test Point, Red, Thru Hole Color Keyed 0.100 x 0.100 inch 5000 Keystone
TP18
3 TP13, TP14, TP15 5001 Test Point, Black, Thru Hole Color Keyed 0.100 x 0.100 inch 5001 Keystone
1 U1 bq51050BYFP IC, Wireless Secondary-Side Power Controller and DSBGA bq51050BYFP TI
Battery Charge
5 — Shunt, 100-mil, Black 929950-00 3M
1 — PCB, 2.1" x 2.1" x 0.031" HPA764 Any
1 Case Modified Polycase LP-11B with 4 screws--See J-6838A Polycase
note 7
1 Coil, RX with Attractor IWAS-4832FF-50 or Vishay or
WR-483250-15M2-G or TDK or
760308201 Wyrth
Notes: 1. These assemblies are ESD sensitive, ESD precautions shall be observed.
2. These assemblies must be clean and free from flux and all contaminants. Use of no clean flux is not acceptable.
3. These assemblies must comply with workmanship standards IPC-A-610 Class 2.
4. Ref designators marked with an asterisk ('**') cannot be substituted. All other components can be substituted with equivalent MFG's components.
5. Tape "Coil, RX" into bottom of case, centered, coil side down, lead wires passing through milled groove.
6. Used to secure RX coil to case. Cut tape section from 36 yard roll identified in part number field.
7. Install PCB in case using provided screws.
8. For 20 V input application, consider using 8 V VGS FETs
20 bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver SLUUA25C–October 2012–Revised June 2013
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