Datasheet

TP8

TP5

MetalGroundBarrel

Probe Tip

Test Setup

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4 Test Setup

4.1 Test Equipment

Voltage Source: The input voltage source Vin must be a 0-V to 14-V variable dc source capable of

supplying 10 Adc. Connect Vin to J1 as shown in Figure 4.

Multimeters: A 0-V to 14-V voltmeter (V1) must be used to measure Vin at TP1 (Vin) and TP2 (GND). A

0-V to 5-V voltmeter (V2) is necessary for Vout measurement at TP5(Vout) and TP8(GND). A 0-A to 10-A

current meter (A1) as shown in Figure 4 is used for input current measurements.

Output Load: The output load must be an electronic constant resistance mode load capable of 0 Adc to

30-Adc at 1.05 V.

Oscilloscope: A digital or analog oscilloscope can be used to measure the output ripple. The oscilloscope

must be set for 1-MΩ impedance, 20-MHz bandwidth, ac coupling, 2-µs/division horizontal resolution,

20-mV/division vertical resolution. Test points TP5 and TP8 can be used to measure the output ripple

voltage by placing the oscilloscope probe tip through TP5 and holding the ground barrel TP8 as shown in

Figure 3. Do not use a leaded ground connection as this may induce additional noise due to the large

ground loop.

Figure 3. Tip and Barrel Measurement for Vout Ripple

Fan: Some of the components in this EVM may get hot and approach temperatures of 60°C during

operation. A small fan capable of 200–400 LFM is recommended to reduce component temperatures while

the EVM is operating. The EVM must not be probed if the fan is not running.

Recommended Wire Gauge: For VIN to J1 (12-V input) the recommended wire size is AWG 14 per input

connection, with the total length of wire less than 4 feet (2-foot input, 2-foot return). For J2, J3 to LOAD,

the minimum recommended wire size is 2x AWG 14, with the total length of wire less than 4 feet (2-foot

output, 2-foot return)

Using the TPS51513EVM-549 A Single-Phase, D-CAP+™ Synchronous Buck SLVU358–February 2010

Controller With Integrated Drivers for General IC V

CORE

Applications

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