AT1382A
Preliminary Product Information
4-Channel DC-DC Converter for DSC
5. Soft start setting
The soft start operation is determined by the capacitor connected to the CS1~CS4 terminal.
Consider the input voltage and load current to design the soft start time.
The soft start time until the DC/DC converter output voltage reaches 95%. It can calculate the soft
start time Ts (s).
Ts (s) = 0.084 * CS (μF)
Ts
R×Cs
33.6 ×117.6
33.6 +117.6
)
VCS = 0.7 × (1− e−(
)
R =
KΩ
The soft start function of CH1 to CH4 are the same. It could be disabled soft start function by
floating CS pin.
6. Setting the output voltage
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