Datasheet

Test Procedure

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6.4 Output Voltage Ripple

1. Expose the ground barrel of the scope probe. Insert the tip of the probe into the plated via located on

the V

OUT

+ pad of the EVM (TP1) and lean the probe so that the exposed ground barrel is resting on the

test point on the Vout- pad of the EVM (TP3) for a tip and barrel measurement as shown in the

example depicted in Figure 4.

2. Apply power to the EVM per Section 6.1.

3. Monitor the output voltage ripple on the oscilloscope.

Figure 4. Typical Example of Tip and Barrel Measurement Technique

NOTE: This photo was not taken on the UCC24610EVM specifically but serves as a visual aid to

perform the test measurement.

6.5 Equipment Shutdown

1. Ensure the load is at maximum of 5 A; this will quickly discharge the output capacitors.

2. Turn off the AC source.

5-V, 25-W Flyback Converter With Secondary-Side Synchronous Rectification SLUU434–August 2010