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P9221-R-EVK Evaluation Board User Manual 

 

© 2017 Integrated Device Technology, Inc. 

December 18, 2017 

 

P9242-R-EVK MM Evaluation Board (Transmitter)

Transmitter Coil

P9221-R-EVK MM 
Evaluation Board 
(Receiver)

Description  

The IDT P9221-R-EVK Mass-Market (MM) Evaluation Board dem-
onstrates  the  features  and  performance  of  the  P9221-R  15W 
Wireless Power Receiver (Rx). The P9221-R-EVK offers the flexi-
bility  to  program  parameters,  such  as  the  output  voltage,  over-

current limit threshold, and external temperature sensing function. 
It also allows tuning the Foreign Object Detection (FOD) feature by 
varying  values  in  the  resistor  divider  connected  to  the  VOSET/ 
Q-Fact pin. 

The P9221-R-EVK MM Evaluation Board is designed to function as 

the receiver in a wireless power transfer system using IDT’s P9242-
R-EVK MM Evaluation Board as the power transmitter. The P9242-
R-EVK is ordered separately. The P9221-R-EVK can also be used 
with the user’s WPC-1.2 compliant transmitter. 

The  high-efficiency,  turnkey  reference  design  is  supported  by 

comprehensive  online,  digital  resources  to  significantly  expedite 
design-in  effort  and  enable  rapid  prototyping.  The  printed  circuit 
board (PCB) has four layers. The total active area is optimized to 
28mm x 15mm. 

Kit Contents 

 

P9221-R-EVK Mass-Market Evaluation Board  

Features 

 

P9221-R-EVK MM Evaluation Board supports WPC-1.2 

 

Up to 15W output power 

 

Selectable output voltage: 12V or 9V 

 

Adjustable over-current limit  

 

External FOD tuning 

 

Power transfer LED indicator 

 

Alignment guide information using the PCB coils 

 

4-layer PCB 

 

Total active area: 420mm

2

  

 

Fully assembled with test points and coil fixture 

P9221-R-EVK MM Evaluation Board 

 

Wireless Power Transfer System using the P9221-R-EVK and P9242-R-EVK 

 

Summary of Contents for P9221-R-EVK

Page 1: ...sfer system using IDT s P9242 R EVK MM Evaluation Board as the power transmitter The P9242 R EVK is ordered separately The P9221 R EVK can also be used with the user s WPC 1 2 compliant transmitter Th...

Page 2: ...WARRANTIES OF MERCHANTABILITY AND OF FITNESS FOR A PARTICULAR PURPOSE STATUTORY WARRANTY OF NON INFRINGEMENT AND ANY OTHER WARRANTY THAT MAY ARISE BY REASON OF USAGE OF TRADE CUSTOM OR COURSE OF DEALI...

Page 3: ...R38 and R22 Location 8 Figure 6 Over Current Limit vs ILIM Pin Voltage 9 Figure 7 Optional External Temperature Sensing by Connecting an RTS Thermistor 10 Figure 8 Silkscreen Top of Board 14 Figure 9...

Page 4: ...n Figure 1 1 Set up the P9242 R EVK Evaluation Board or user transmitter according to the board s user manual 2 Place the P9221 R EVK on the transmitter TX pad with the components facing up as shown i...

Page 5: ...igure 2 P9221 R EVK MM Evaluation Board V2 2 Features FOD Offset Adjustment RPO External Temperature Sensing Resistor Output Voltage Adjustment VOSET FOD Gain Adjustment RPG Over Current Limit Adjustm...

Page 6: ...isabled by changing R33 as described in Table 1 In this case if the receiver is placed on a 5W transmitter the receiver output pin will be high impedance The VOSET Q Fact pin also allows setting the Q...

Page 7: ...ce from the Align_X and Align_Y registers see the P9221 R Datasheet The difference in the electromotive force EMF voltage of the two coils can be represented by the amount of magnetic flux which depen...

Page 8: ...lows changing the over current limit value without modification of the firmware by selecting the values of R38 and R22 as shown in Table 2 R38 and R22 form a divider network from the 1 8V supply to gr...

Page 9: ...tage level on the TS EOC pin as described by Equation 1 VTS VVDD18 NTC R19 NTC Equation 1 Where NTC is the thermistor s resistance and R19 is the pull up resistor connected to the 1 8V supply voltage...

Page 10: ...oils are recommended for the P9221 R receiver for 15W applications for optimum performance The recommended vendor coils have been tested and verified as shown in Table 3 Table 3 Recommend Coil Manufac...

Page 11: ...H5 AC2_2 H6 BST1 G1 BST2 G6 PGND C1 PGND1 C6 PGND2 J1 PGND3 J2 PGND4 J3 PGND5 J4 PGND6 J5 PGND7 J6 VDD5V F1 VDD18 F6 RSV3 G3 RSV2 H3 RSV1 G4 TS EOC H4 C20 1uF EN R19 10K I2CRAIL VOUT VOSET P9221 R MM...

Page 12: ...C12 1 NP CAP CER 10 F 25V X5R 0603 CL10A106MA8NRNC 0603 10 C18 C20 2 1 F CAP CER 1 F 10V X5R 0402 GRM155R61A105KE15D 0402 11 C19 C31 2 0 1 F CAP CER 0 1 F 10V X5R 0201 C0603X5R1A104K030BC 0201 12 C23...

Page 13: ...17 R19 R23 R27 R29 R34 R38 R39 8 10k RES SMD 10K OHM 5 1 16W 0402 CRCW040210K0JNEDIF 0402 26 R18 R22 R28 R30 R33 R41 R42 7 NP RES SMD 10K OHM 5 1 16W 0402 CRCW040210K0JNEDIF 0402 27 R35 1 0 RES SMD 0...

Page 14: ...P9221 R EVK Evaluation Board User Manual 2017 Integrated Device Technology Inc 14 December 18 2017 5 Board Layout Figure 8 Silkscreen Top of Board Figure 9 Silkscreen Bottom of Board...

Page 15: ...P9221 R EVK Evaluation Board User Manual 2017 Integrated Device Technology Inc 15 December 18 2017 Figure 10 Top Copper Layer Figure 11 L2 Copper Layer...

Page 16: ...P9221 R EVK Evaluation Board User Manual 2017 Integrated Device Technology Inc 16 December 18 2017 Figure 12 L3 Copper Layer Figure 13 Bottom Copper Layer...

Page 17: ...ithout representation or warranty of any kind whether express or implied including but not limited to the suitability of IDT s products for any particular purpose an implied warranty of merchantabilit...

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