PE25208 Parallel EVK User's Manual Introduction The PE25208 parallel evaluation kit (EVK) is a hardware platform designed to easily test two PE25208 devices operating in parallel. The PE25208 is an ultra-high efficiency charge pump and capacitor divider that you can configure to divide an input voltage by 2 or 3 and operates in parallel with an additional PE25208.
PE25208 Parallel EVK User's Manual Performance Summary Table 1 lists the electrical parameters of the PE25208 parallel EVK and only applies to two PE25208 devices operating in parallel. For details about single PE25208 operation, see the PE25208 Data Sheet. Table 1. Performance Summary for Two PE25208 Devices Operating in Parallel Parameter Symbol Condition...
PE25208 Parallel EVK User's Manual Parallel Evaluation Kit Contents and Hardware Requirements Kit Contents Table 2 lists the PE25208 parallel EVK box contents, as shown in Figure 1. Due to the high power (240W) required for USB-PD EPR application, even a 1% loss in efficiency results in a power dissipation of 2.4W. This is a high-power dissipation for the two PE25208 devices to handle without thermal solutions;...
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PE25208 Parallel EVK User's Manual Warning: The PE25208 parallel EVK contains components that could be damaged by exposure to voltages higher than the maximum 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 to signal inputs and outputs.
PE25208 Parallel EVK User's Manual Quick Start Guide Quick Start Overview The evaluation board is designed to ease your evaluation of the two PE25208 DC-DC converters operating in parallel. This section guides you through the hardware interfaces, various hardware configurations, EVK connections, and the startup procedure to operate the PE25208 parallel EVK.
PE25208 Parallel EVK User's Manual Power Input and Output Terminals The PE25208 parallel EVK has four power terminals, as shown in Figure 2: The two VIN positive (+) and VIN negative (-) power input terminals, which receive input power from a connected bench DC power supply.
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PE25208 Parallel EVK User's Manual Figure 3 shows the two valid jumper configurations of the configuration (3-pin) headers for operation. Figure 3. Valid Jumper Configurations for Operation Connection Headers The PE25208 parallel EVK has two connection headers, as shown in Figure 2: ...
PE25208 Parallel EVK User's Manual Test and Sense Points The PE25208 parallel EVK includes various test points to measure the voltage values of critical signals, probe critical signals to observe their waveforms, and monitor supply external voltages to the parallel PE25208 system. ...
PE25208 Parallel EVK User's Manual Voltage-only Measurement Connections To take only voltage measurements, connect the parallel EVK to the equipment as shown in Figure 6. Figure 6. PE25208 Parallel EVK Connections to Equipment for Voltage-only Measurements Voltage and Current Measurement Connections To take both voltage and current measurements, connect the parallel EVK to the equipment as shown in Figure 7.
PE25208 Parallel EVK User's Manual Start-Up Procedure (Hardware Operating Guidelines) This section provides the general guidelines and procedures to start up and operate the PE25208 parallel EVK. To achieve optimal performance, follow these steps to configure and operate the parallel EVK. 1.
PE25208 Parallel EVK User's Manual Performance Data Figure 9 and Figure 10 show the typical performance of the PE25208 parallel EVK. Figure 9. Linear Efficiency (%) vs. Load Current (A) Plot: VIN = (18V, 36V, 45V), DIV2, FF, 300 kHz Figure 10.
PE25208 Parallel EVK User's Manual Layout Considerations Figure 16 shows the critical components required to implement the two parallel PE25208 devices. The red- highlighted connection lines are the high-power nodes in the design. Pay close attention to the parasitic resistances and parasitic inductances at these nodes. The area of these connections must be made sufficient. Figure 16.
PE25208 Parallel EVK User's Manual Pinout Information and Component Placement In the PE25208 parallel EVK, both PE25208 devices are placed according to the Figure 17 pin map, where the input voltage (VIN) is at its left side and the output voltage that requires filtering (VX) is at the right side. Figure 17.
PE25208 Parallel EVK User's Manual Technical Resources Additional technical resources are available for download in the Products section at www.psemi.com. These include the product specification datasheet, S-parameters, zip file, evaluation kit schematic, bill of materials, material declaration form, and PC-compatible software file. Trademarks are subject to trademark claims.
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