SNVU848 November   2023 LMR38025-Q1

 

  1.   1
  2.   LMR38025 LMR38025-Q1 EVM User Guide
  3.   Trademarks
  4. 1General TI High Voltage Evaluation User Safety Guidelines
  5. 2 LMR38025-Q1 Evaluation Module
    1. 2.1 Quick Start Procedure
    2. 2.2 Detailed Descriptions
  6. 3EVM Photo
  7. 4Schematic
  8. 5PCB Layout
  9. 6Bill of Materials
  10. 7Performance Curves

Abstract

The LMR38025QEVM is an 80-V DC/DC buck regulator that employs synchronous rectification to achieve high conversion efficiency in a small footprint. The EVM operates over a wide input voltage range of 6 V to 80 V to provide a regulated 5-V output at 400-kHz switching frequency. The output voltage has better than 1.5% setpoint accuracy and is adjustable using an external resistor divider. The module design uses the LMR38025SQDRRRQ1 synchronous buck converter with the following:

  • Wide input voltage (wide VIN) range
  • Wide duty-cycle range
  • Integrated high-side and low-side power MOSFETs
  • Cycle-by-cycle overcurrent protection
  • Spread spectrum

The LMR38025-Q1 converter is available in an 12-pin WSON integrated circuit package to enable high-density, low-component count DC/DC designs. The LMR38025QEVM evaluation module is qualified for the LMR38025-Q1 as well as the LMR38025 buck converter. See Table 1-1 for package information.

Table 1-1 Device and Package Configurations
CONVERTERICPACKAGE
U1LMR38025-Q112-pin WSON package (3.00 mm × 3.00 mm)
LMR38025