SLVUCD8 February   2022

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Features
    2. 1.2 Applications
  3. 2EVM Setup and Quick Start Guide
  4. 3EVM Connectors and Test Points
  5. 4PCB Layouts
  6. 5Schematics
  7. 6Bill of Materials (BOM)

2 EVM Setup and Quick Start Guide

Table 2-1 lists the default configuration.

Table 2-1 Default EVM Configuration
PARAMETER SPECIFICATION
Input power supply 4 V to 14 V
Operating temperature 25°C
Switching frequency 500 kHz

The TPS7H5005/6/7/8EVM can be quickly turned on and run using the connections shown in Table 2-2.

Table 2-2 TPS7H5005/6/7/8EVM Connections
TERMINAL OR TEST POINT VOLTAGE SOURCE
J11 (VIN) 4-V to 14-V input at 10 mA. See Positive and Negative Terminal for J11 connections.
TP9 (COMP) 1 V at < 10 mA (input range can be –0.3 V to 3.3 V based on the TPS7H500x-SEP Radiation-Tolerant 2-MHz Current Mode PWM Controllers in Space Enhanced Plastic data sheet).

The device should then turn on and operate in open loop mode as shown in Figure 2-1. Figure 2-1 shows the output of TPS7H5005/6/7/8-SP measured on J1–J4 with the quick start method.

GUID-28C502A9-0D1B-47C1-B0CF-0299C46F0C6B-low.png Figure 2-1 TPS7H5005/6/7/8-SEP Output

The operation of this mode is such that forcing the voltage on COMP will create an output on the TPS7H5005/6/7/8EVM. The duty cycle varies based on the input voltage on COMP as well as the triangle waveform created by the CS_LIM circuit, or any other waveform that the user decides to add to the CS_LIM pin. See Figure 2-2 for signal generation waveforms. Note that OUTB and SRB will not be present for TPS7H5006EVM, and TPS7H5007EVM. SRA and SRB will not be present for TPS7H5008EVM.

Figure 2-2 shows waveforms for input and output signal generations for the TPS7H5005/6/7/8EVM based on COMP voltage and CS_LIM pin voltage.

GUID-0D2CD72D-B092-4602-BADC-FFE15DCC1CFB-low.png Figure 2-2 Duty Cycle Generation