SLVUDN3 December   2025

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 Recommended Equipment
    2. 2.2 Quick Start Procedure
    3. 2.3 Setup
      1. 2.3.1 Supply Voltage
      2. 2.3.2 Inputs
      3. 2.3.3 Outputs
  8. 3Hardware Design Files
    1. 3.1 Schematics
    2. 3.2 PCB Layouts
    3. 3.3 Bill of Materials (BOM)
  9. 4Additional Information
    1. 4.1 Trademarks

2.3.2 Inputs

The TLV672XEVM contains resistors and switches at the INT/RSTn and LPWn/PRSn nodes to demonstrate in-application behavior. Input behavior is described below assuming V_HOST is powered by 3.3V.

  • When H_RSTn is driven to 3.3V, Q2 is Hi-Z and INT/RSTn is in OSFP Voltage Zone 2 (M_INT = LOW) or Voltage Zone 3 (M_INT = HIGH)
  • When H_RSTn is driven to GND, Q2 pulls INT/RSTn to GND and INT/RSTn is in OSFP Voltage Zone 1
  • When H_LPWn is driven to 3.3V, (TLV672XEVM R9) 15kΩ resistor is connected from LPWn/PRSn to V_HOST and LPWn/PRSn is in OSFP Voltage Zone 2
  • When H_LPWn is driven to GND, (TLV672XEVM R9) 15kΩ resistor is disconnected from LPWn/PRSn and LPWn/PRSn is in OSFP Voltage Zone 1

The TLV672XEVM has test-points TP11 and TP18 at the INT/RSTn and LPWn/PRSn inputs of the TLV6722. These test points can be used to drive the INT/RSTn and LPWn/PRSn nodes directly if the user wants to bypass the input resistors and switches. If bypassing the input switches and resistors, the user still powers V_HOST and drive H_RSTn to 3.3V to avoid shorting the INT/RSTn driver to ground.

Another way to evaluate the TLV6722 is to configure the TLV672XEVM to have the device only. The user can depopulate R4, R9, and R7, as well as connecting V_HOST to GND to remove the effects of the host-side passives.

M_INT is the digital input to the TLV6722 that determines the connection of the internal 8kΩ resistor in the INT/RSTn circuit. M_INT behavior is described below.

  • When M_INT is driven to GND, the 8kΩ resistor is connected to GND.
  • When M_INT is driven to M_VCC, the 8kΩ resistor is opened (disconnected from GND).
Since M_INT is a digital input to the TLV6722, the M_INT node MUST be driven to a well-defined voltage. The user can short M_INT to M_VCC or GND with a jumper on J3, or drive the M_INT pin at TP13 directly.