TIDT293 October   2022

 

  1.   Description
  2.   Features
  3.   Applications
  4. 1Design Variants
  5. 2Design Overview
    1. 2.1 Board Contents
    2. 2.2 Connector Description
    3. 2.3 User Interface
      1. 2.3.1 Switches and Push-buttons
      2. 2.3.2 Jumpers
      3. 2.3.3 Potentiometers
    4. 2.4 Functional Block Diagram
    5. 2.5 Functional Block Descriptions
  6. 3Features and Performance Curves
    1. 3.1  Test Setup
    2. 3.2  Pulse
    3. 3.3  Levels and Free Run
    4. 3.4  INP
    5. 3.5  Dual-Output Power Supply
    6. 3.6  Overtemperature Protection
    7. 3.7  Slew Rate Adjust
    8. 3.8  Settling Time Adjust
    9. 3.9  Low- and High-Level Adjust
    10. 3.10 Pulse-Width Adjust
    11. 3.11 Period and Delay Adjust
    12. 3.12 Frequency Response
  7. 4Operation
    1. 4.1 Initial Setup – Jumper Selection and Potentiometer Settings
    2. 4.2 Procedure
      1. 4.2.1 Initial Power Up
      2. 4.2.2 Connecting the Circuit Under Test
  8. 5Limitations and Capabilities
    1. 5.1 Wiring Inductance
    2. 5.2 Minimum Voltage
    3. 5.3 Battery Life
  9. 6Typical Failure Mechanism
    1. 6.1 Fast Thermal Failure
    2. 6.2 Slow Thermal Failure

4.2.1 Initial Power Up

  1. Verify that Vout_Load (J2) is disconnected
  2. Install a standard 9-V alkaline rectangular battery to J1 or a bench DC power supply that can be connected with hook test clips to Vbatt/Vin (TP1) and GND (TP3). The supply voltage range for the board is 6-V to 12-V DC. When using a 9-V power supply, the input current is 33 mA to 46 mA at slow and fast slew rates, respectively.
  3. Turn on Power (S1), verify the Pgood (D7) LED turns on
  4. Probe Pulse (TP10), and trigger the signal on an oscilloscope
  5. Probe INP (TP7), and monitor the signal
  6. Adjust Low (R15) and High (R23) to the desired low and high levels, respectively
  7. Adjust Settling Time (R43) for the cleanest INP signal. This can require additional tuning after connecting the device.