SLVUA85A June   2014  – May 2021 TPS65261

 

  1.   Trademarks
  2. 1Background
  3. 2TPS65261 Schematic
  4. 3Board Layout
    1. 3.1 EVM Layout
  5. 4Bench Test Setup Conditions
    1. 4.1 Headers Description and Jumper Placement
    2. 4.2 Jumpers and Switches
  6. 5Power-Up Procedure
  7. 6Bill of Materials
  8. 7Revision History

1 Background

The TPS65261 PMIC is a triple 3-A, 2-A, 2-A output current, synchronous step-down (buck) converter with an operational range of 4.5 V to 18 V. The TPS65261 features an automatic power sequence with connecting MODE pin to V7V and configuring EN1/2/3 pins. The device also features an open drain RESET signal to monitor power down. The TPS65261 operates in pulse skipping mode (PSM) light load.

As there are many possible options to set the converters, Table 1-1 presents the performance specification summary for the EVM.

Table 1-1 Summary of Performance
Test ConditionsPerformance
VIN = 4.5 V to 18 V
fSW = 600 kHz
(25°C ambient)		BUCK1, 1.2 V, up to 3 A
BUCK2, 3.3 V, up to 2 A
BUCK3, 1.8 V, up to 2 A
RESET, pull low when VDIV lower than 1.23 V

This evaluation module is designed to provide access to the features of the TPS65261. Some modifications can be made to this module to test performance at different input and output voltages, current and switching frequency. Contact the TI Field Applications group for advice on these matters.