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Performance Characteristics

Conditions: Input Voltage = 48V

Output Current = 25A

Trace 1: Output Voltage Volts/div = 1V

Horizontal Resolution = 2.0 ms/div

Figure 4. Soft-Start

Conditions: Input Voltage = 48V

Output Current = 15A to 22.5A to 15A

Upper Trace: Output Voltage Volts/div = 100mV

Lower Trace: Output Current = 5A/div

Horizontal Resolution = 200 µs/div

Figure 5. Transient Response

Figure 6 shows typical output ripple seen directly across the output capacitor, for an input voltage of 48V

and a load of 30A. This waveform is typical of most loads and input voltages.

SNVA468C–February 2011–Revised May 2013 AN-2111 LM5045 Evaluation Board

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