Datasheet

Background and EVM Limitations

www.ti.com

1 Background and EVM Limitations

The TPS652510 PMIC is designed to provide 3 , 2 and 2 A continuous outputs with an operational range

of 4.5 to 16V and a externally set switching frequency ranging from 300kHz to 2.2MHz, with automatic

PFM/PWM operation . When the PMIC is not fully loaded, buck1 can be loaded to 3.5A and buck 2 and 3

to 2.5A.

As there are many possible options to set the converters, table 1 presents the performance specification

summary for the EVM.

Table 1. Input Voltage and Output Current Summary

Evaluation Module Test Conditions Output Current Range

Buck1, 1.2 V, 3A

Vin = 4.5 V to 15 V Buck2, 1.8 V, 3A

TPS652510EVM

Fsw = 500 KHz Buck3, 3.3 V, 3A

(25°C ambient)

This evaluation module is designed to provide access to the features of the TPS652510. Some

modifications can be made to this module to test performance at different input and output voltages,

current and frequency operation. Please contact TI Field Applications Group for advice on these matters.

2 Power-up Procedure

1. Define which converters are to be enabled or disabled by connecting jumpers to JP3, JP11 and JP20

accordingly, or to wiring external drive signals to the ENx headers.

2. If PGOOD signal is required connect JP27 or wire the PGOOD pin to a pull-up supply

3. Connect loads to the output connectors.

4. Apply a DC voltage to header J3. Polarity is marked on the silk-screen.

5. Converters will start according to the setting on JP3, JP11 and JP20. Check the outputs

3 TPS652510EVM Schematic

The resistor and capacitor values have been chosen according to the guidelines presented on the

TPS652510 spec that will be available at

http://focus.ti.com/docs/prod/folders/print/TPS652510.html

Note that for the purpose of gains-phase measurements R14, R17 and R37 (zero ohm on the EVM) need

to be replaced by suitable low value resistors as per the network analyzer setup required. Test points

connections are provided on either end of the resistors to allow for easy measurement.

TPS652510 High Current, Synchronous Step Down Three Buck Switcher SLVU570–September 2011

Evaluation Module

Submit Documentation Feedback