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Performance Characteristics

Conditions:

Input Voltage = 20VDC

Output Current = 150 mA

Bandwidth Limit = 20 MHz

Trace 1:

Output Voltage

Volts/div = 20 mV

Horizontal Resolution = 1 µs/div

Figure 4. Typical Output Ripple for an Input Voltage of 20V and a Load of 150 mA

Figure 4 shows typical output ripple, seen directly across the output capacitor, for an input voltage of 20V

and a load of 150 mA. This waveform is typical of most loads and input voltages.

Figure 5 shows power efficiency over full input voltage and output current range. Peak efficiency is at full

rated load and is greater then 90% across the input voltage range.

Figure 6 shows the small signal closed loop response with 20V input and 150 mA load current into a

resistive load. The gain curve starts at around 60dB the phase curve starts at around 45°. 0dB of

crossover frequency is at 11 kHz with a phase margin of 70°.

Conditions:

Input Voltage = 16 - 36VDC

Output Current = 10 mA - 150 mA

Figure 5. Power Efficiency Over Full Input Voltage and Output Current Range

SNVA393B–March 2009–Revised April 2013 AN-1956 LM5001 Boost Evaluation Board

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