Datasheet

NSTRUMENTS

EXAS

Source

Vin

Load

FAN

Configurations

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5.2 Recommended Test Setup

Figure 3. TPS53219EVM-690 Recommended Test Set Up

Figure 3 is the recommended test setup to evaluate the TPS53219EVM-690. Working at an ESD

workstation, make sure that any wrist straps, bootstraps or mats are connected referencing the user to

earth ground before power is applied to the EVM.

Input Connections:

1. Prior to connecting the dc input source Vin, it is advisable to limit the source current from Vin to 10 A

maximum. Ensure that Vin is initially set to 0 V and connected as shown in Figure 3.

2. Connect a voltmeter V1 at TP7 (Vin) and TP8 (GND) to measure the input voltage.

3. Connect a current meter A1 to measure the input current.

Output Connections:

1. Connect Load to J5, and set Load to constant resistance mode to sink 0 Adc before Vin is applied.

2. Connect a voltmeter V2 at TP14 (Vout) and TP15 (GND) to measure the output voltage.

Other Connections:

Place a fan as shown in Figure 3 and turn on, ensuring that air is flowing across the EVM.

6 Configurations

All jumper selections must be made prior to applying power to the EVM. Users can configure this EVM per

the following configurations.

6.1 Switching Frequency Selection

The switching frequency can be set by J1.

Default setting: 300kHz

Using the TPS53219EVM-690 Wide-Input Voltage, Eco-mode™, Single, SLVU431–January 2011

Synchronous, Step-Down Controller

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