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Murata PE25203 User Manual

Divide-by-2 and -3, 4a charge pump, capacitor divider
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  • Page 2 The PE25203 is an ultra-high efficiency charge pump capacitor divider that is configurable to divide down an input voltage by two or three and deliver up to 4A output at up to 99% peak efficiency. The PE25203 supports an input voltage range of 5.7V to 10V in divide-by-2 and 8.4V to 15V in divide-by-3 mode and is available in a WLCSP package.
  • Page 3 ■ DC test leads Caution: The PE25203 EVK contains components that might be damaged by exposure to voltages more than the specified voltage, including voltages produced by electrostatic discharges. Handle the board in accordance with procedures for handling static-sensitive components. Avoid applying excessive voltages to the power supply terminals or signal inputs or outputs.

  • Page 4: Output Terminals

    The evaluation board is designed to ease customer evaluation of the PE25203. This section guides you through configuring the hardware and the start-up procedures. The evaluation board is shown in Figure 1.The board contains: ■ Input/output terminals ■ PCB headers ■...
  • Page 5 VOUT pin and if not used, connect it to ground. Table 3. Three-way PCB Headers Information Figure 2. Three-way PCB Header Configuration Settings Example http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 5 of 32...

  • Page 6: Test Point

    Table 4. Two-way PCB Header Information Table 5 includes information from all the test points (TP) that can be found in the PE25203 EVK. The aim of each TP is to facilitate users’ ability to capture the waveforms from critical signals, To make accurate measurements from input and output voltages, it is critical to use the SO and SI test points already included in the PE25203 EVK.
  • Page 7 Connect the EVK and the measuring equipment as shown in Figure 3. Figure 3. EVK Connection Example Figure 4. PE25203 EVK Connection to Measure Voltage http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 7 of 32...
  • Page 8 Note: if the Power Supply being used has remote sense capability, use +/- SI pins to sense input voltage at VIN IC pins. Figure 5. PE25203 EKV Connections to Measure Voltage and Current http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 8 of 32...
  • Page 9 If the EVK is started with a load, it may not start due to the soft-start current limit. Enable Fixed Frequency Divide-by-2 Figure 6. Configuration for Jumpers Position http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 9 of 32...
  • Page 10 The FREQ pin can be used to set the operating frequency of the PE25203. To save a resistor, the FREQ pin can also be connected to GND to oscillate at a nominal 200 kHz. Note that this is the frequency of oscillation at the VX pin and the charge pump frequency per phase will be switching at 50% of this value.
  • Page 11 Figure 8. R2 Location http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 11 of 32...

  • Page 12: Test Results

    Test Results The following test results show the typical performance of the PE25203 evaluation board at nominal voltages 7.7V divide-by-2 and 11.55V divide-by-3. PE25203 Efficiency vs IOUT (Inductor: 100nH, TFM252012ALMAR10MTAA, Fsw=200KHz) Div2 cycle skip Div2 fixed frequency Div3 cycle skip...
  • Page 13 This function allows the EVK to automatically change the division ratio by measuring the input voltage. An inverting comparator with hysteresis shown in Figure 11 is implemented to achieve the auto-switch mode of the PE25203 EVK. The hysteresis is used to improve stability against noise, and it also can be used to set two different threshold voltages, Vtrigger_low to change from div3 to div2 division ratio and Vtrigger_high to change from div2 to div3 division ratio.
  • Page 14 H3 and H6; only one PCB header should be set to avoid damaging the EVK. Figure 12. PE25203 EVK with Auto-switch Mode Circuit http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 14 of 32...
  • Page 15 It is recommended to tune the circuit until all Vref and Vsense values are shown in blue, and all percent error values are shown in green. Figure 14. Excel File Example http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 15 of 32...
  • Page 16 It is recommended not to set Vtrigger_low below 8.6V to avoid taking the charge pump system into UVLO conditions under heavy load operation. After Vtrigger low/high voltages have been set, insert them into the Excel file. http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 16 of 32...
  • Page 17 In the example shown in the table below, the calculated value was achieved by using two different resistor values. It is suggested to always aim to achieve the lowest percent error possible. http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 17 of 32...
  • Page 18 During the transition, the maximum load should be limited to 1.5A. http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 18 of 32...
  • Page 19 Figure 15 shows the critical components require to implement the PE25203. The red lines (highlighted) are the high- power nodes in the design. Close attention must be paid to both parasitic resistance and inductance at these nodes. Figure 15. PE25203 Simplified Application Schematic http://www.murata.com/products/power...
  • Page 20 PE25203 IC. All components are placed on the top layer of the PCB. In the PE25203 EVK, the IC is placed as shown in Figure 16 where the Vin voltage is on the right side and the VX voltage (output voltage from IC that needs to be filtered) is on the left side.
  • Page 21 0.1mm/0.1 mm. Vias size is 0.2 mm hole and 0.1 mm pad. Figure 18. PE25203 PCB Routing Example http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 21 of 32...
  • Page 22 Figure 19. Top Layer Figure 20. Inner Copper Layer 1 http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 22 of 32...
  • Page 23 Figure 21. Inner Copper Layer 2 Figure 22. Bottom Copper Layer http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 23 of 32...
  • Page 24 Figure 23. Top Layer Silkscreen http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 24 of 32...
  • Page 25 Figure 24 shows the PE25203 functional block diagram. Figure 24. PE25203 Functional Block Diagram http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 25 of 32...
  • Page 26 Figure 25 shows the EVK PCB schematic and Figure 26 shows the auto-switch mode circuit schematic. Figure 25. Charge Pump Circuit Schematic without Auto-switch Mode Circuit http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 26 of 32...
  • Page 27 Figure 26. Auto-switch Mode Circuit Schematic http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 27 of 32...
  • Page 28 RC0603FR-071ML 0603 RES 51K OHM 1% 1/10W R4,R11 RC0603FR-0751KL 0603 0ohm RES 0 OHM JUMPER 1/10W RC0603FR-070RL 0603 http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 28 of 32...
  • Page 29 PC TEST POINT COMPACT 5016 CONN HEADER VERT 4POS DF1BZ-4P-2.5DSA 2.5MM PREC004SAAN-RC (Alternative) Table 6. Murata Recommended Parts http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 29 of 32...
  • Page 30 PC-compatible software file. Trademarks are subject to trademark claims. http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 30 of 32...
  • Page 31 ■ Do not allow our product to be exposed to excess moisture under any circumstances. http://www.murata.com/products/power Copyright ©2023 Murata Manufacturing Co., Ltd. and pSemi Corporation, a Murata Company. All rights reserved. DOC-111189-2 (10/2023) Page 31 of 32...

  • Page 32: Sales Contact

    Disclaimers The information in this document is believed to be reliable. However, Murata and its affiliates do not assume any liability for the use of this information or use of this product. Use shall be entirely at the user’s own risk. No patent rights or licenses to any circuits described in this document are implied or granted to any third party.

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