SLVU895B March   2013  – January 2022 LMZ31704 , LMZ31707 , LMZ31710

 

  1.   Trademarks
  2. 1Description
  3. 2Getting Started
  4. 3Test Point Descriptions
  5. 4Operation Notes
  6. 5Performance Data
  7. 6Schematic
  8. 7Bill of Materials
  9. 8PCB Layout
  10. 9Revision History

Description

This EVM features the LMZ31710 (10-A), LMZ31707 (7-A), or LMZ31704 (4-A) synchronous buck power module configured for operation with typical 5-V and 12-V input bus applications. The output voltage can be set to one of seven popular values by using a configuration jumper. In similar fashion, the switching frequency can be set to one of seven values with a jumper. The full output current rating of the device can be supplied by the EVM. Input and output capacitors are included on the board to accommodate the entire range of input and output voltages. Monitoring test points are provided to allow measurement of the following:

  • Efficiency
  • Power dissipation
  • Input ripple
  • Output ripple
  • Line and load regulation
  • Transient response

Control test points are provided for use of the PWRGD, inhibit/UVLO, synchronization, and slow-start/tracking features of the LMZ317xx device. The EVM uses a recommended PCB layout that maximizes thermal performance and minimizes output ripple and noise.