SLVUBX8B October   2020  – December 2021 TPS2661

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 EVM Features
    2. 1.2 EVM Applications
  3. 2Description
  4. 3Schematic
  5. 4General Configurations
    1. 4.1 Physical Access
    2. 4.2 Test Equipment and Setup
      1. 4.2.1 Power Supplies
      2. 4.2.2 Meters
      3. 4.2.3 Oscilloscope
      4. 4.2.4 Loads
  6. 5Test Setup and Procedures
    1. 5.1 Overload Protection Test
    2. 5.2 Output Short-Circuit Test
    3. 5.3 Input Undervoltage Protection Test
    4. 5.4 Output Undervoltage Protection Test
    5. 5.5 Output Overvoltage Protection Test
    6. 5.6 TPS26612 Overload Protection Test
    7. 5.7 Current Limiting for VIN < –Vs
    8. 5.8 Surge Protection Test (Current Input, CH1)
    9. 5.9 Surge Protection Test (Analog Output, CH2)
  7. 6EVAL Board Assembly Drawings and Layout Guidelines
    1. 6.1 PCB Drawings
  8. 7Bill Of Materials (BoM)
  9. 8Revision History

2 Description

The TPS2661EVM evaluation board enables evaluation of TPS26610 and TPS26612 current loop protectors. The input signal is applied between connectors J1 and J13 while J3 and J9 provides the output connection to the load; see the schematic in Figure 3-1, and EVM test setup in Figure 5-1. U1 in channel-1 provides current input protection and U3 in channel-2 provides output analog output protection and sensor supply protection.

LEDs D1 (D5) provide visual indication when the device U1 (U3) operates outside normal operating conditions. Table 2-1 details the eFuse options and settings.

Table 2-1 TPS2661EVM eFuse Evaluation Board Options and Setting
Part Number EVM Function Channel IN Range Overload Response Application
TPS2661EVM Evaluation Board

Current input protection on CH1, analog output protection and sensor supply protection on CH2

 CH1 – TPS26610 Current input range: ±20 mA Depends on MODE pin selection. See Section 8.4 in the data sheet for the details Analog input protection for current inputs
CH2 – TPS26612 Voltage input range: 0 to +Vs Analog module output port protection
Note:

TVS diodes U6 and U7 are required when burden resistor (R8–R11) is floating, jumpers J17 and J19 are open (burden resistor is not connected to GND).