SLVUA04A February   2014  – January 2022 LMZ31704 , LMZ31707 , LMZ31710


  1. Description
  2. Getting Started
  3. Test Point Descriptions
  4. Operation Notes
  5. Current Limitations
  6. Performance Data
  7. 2× Parallel Bill of Material
  8. 2× Parallel Schematic
  9. 4× Parallel Bill of Material
  10. 104× Parallel Schematic
  11. 11Revision History


This test board features the LMZ31710 device configured for parallel operation. The test board operates over the entire input voltage range of the LMZ31710 device (2.95 to 17 V) with the option to select a split input power rail. The output voltage can be set to one of four popular values by using a configuration jumper (P4). This board can be configured to accept an external clock to set the switching frequency. Using a jumper, each paralleled LMZ31710 device can be configured to operate in phase with the controller or 180° out-of-phase. Input and output capacitors are included on the board to accommodate the entire range of input and output voltages. Current monitoring test points are available to measure the current of each device. 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 to use the PWRGD, inhibit/UVLO, synchronization (CLK_IN), and slow-start or tracking features.