Datasheet

V3V4

12V/10A

DCPower

Source

Electronic

Load#2.

3.3V/8A

Electronic

Load#1.

5V/8A

TP7

(TP8)

TP2

(TP3)

MetalGround

Barrel

Probe Tip

Test Setup

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5 Test Setup

5.1 Test Equipment

Voltage Source: The power source must be capable of supplying 8 VDC to 20 VDC at up to 10 A.

Multimeters: A minimum of three voltage meters are required. Other voltage meters can be used to

monitor some of the test points.

Output Load: Two constant current electronic loads are recommended. They must be able to sink up to

10 A when the output is 3.3 V or 5V.

Oscilloscope: A minimum 50-MHz digital oscilloscope and a voltage probe is required. The scope can be

used to measure output ripple and monitor some of the test points

Fan: A fan is not required when testing the EVM

Recommended Wire Gauge: Both loads and input should be connected using a minimum gauge wire of

AWG#16. Also these connections should be kept as short as possible.

5.2 Recommended Test Setup

Figure 2. TPS51220A EVM-476 Recommended Test Set Up

Figure 3. Recommended “ Tip and Barrel” Technique to Measure Output Ripple Voltage

High Performance Dual Output Synchronous Buck EVM SLUU381A–September 2009–Revised May 2011

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