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Performance Characteristics

11.2 Output Ripple Waveforms

Figure 3 shows the transient response for a load change from 15A to 22.5A. The upper trace shows

minimal output voltage droop and overshoot during the sudden change in output current shown by the

lower trace.

Conditions: Input Voltage = 48VDC Output Current = 5A

Conditions: Input Voltage = 48VDC Output Current = 15A to

Trace 1: Output Voltage Volts/div = 500mV Horizontal

22.5A Upper Trace: Output Voltage Volts/div = 50mV Lower

Resolution = 0.5ms/div

Trace: Output Current = 15A to 22.5A to 15A Horizontal

Resolution = 0.5ms/div

Figure 3. Output Voltage During a Typical Start-Up Figure 4. Transient Response for a Load Change From

15A to 22.5A

Conditions: Input Voltage = 48VDC Output Current = 30A Bandwidth Limit = 20MHz Trace 1: Output Ripple Voltage

Volts/div = 20mV Horizontal Resolution = 1µs/div

Figure 5. Typical Output Ripple Seen Across the Output Terminals

SNVA433A–March 2010–Revised May 2013 AN-2043 LM5035C Evaluation Board

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