9.2.3 Application Curves

Figure 38 shows a test example of soft-start when driving a big capacitive load. Figure 39 shows an expanded waveform of the output current.

VS = 12 V	INx = ↑	Current limit = 1 A
Load current = 0.4 A	CL = 2.3 mF	CH1 = INx
CH2 = FAULT	CH3 = output voltage	CH4 = output current

Figure 38. Driving a Capacitive Load With Adjustable Current Limit

VVS = 12 V	INx = ↑	Current limit = 1 A
Load current = 0.4 A	CL = 2.3 mF	CH1 = INx
CH2 = FAULT	CH3 = output voltage	CH4 = output current

Figure 39. Driving a Capacitive Load, Expanded Waveform

Figure 40 shows a test example of PWM-mode driving. Figure 41 shows the expanded waveform of the rising edge. Figure 42 shows the expanded waveform of the falling edge.

VVS = 13.5 V	INx = 200-Hz PWM at 50% duty cycle	CH1 = INx signal
CH2 = CS voltage	CH3 = output voltage	CH4 = output current

Figure 40. PWM Signal Driving

VVS = 13.5 V	INx = 200-Hz PWM at 50% duty cycle	CH1 = INx signal
CH2 = CS voltage	CH3 = output voltage	CH4 = output current

Figure 42. Expanded Waveform of Falling Edge

VVS = 13.5 V	INx = 200-Hz PWM at 50% duty cycle	CH1 = INx signal
CH2 = CS voltage	CH3 = output voltage	CH4 = output current

Figure 41. Expanded Waveform of Rising Edge