BD8381EFV-M
●Procedure for external components selection
Follow the steps as shown below for selecting the external components
1. Work out IL_MAX from the operating conditions.
2. Select the value of RSC such that IOCP > IL_MAX
3.
Select
the
value
of
L
such
that
0.05[V/µs]
<
Vout
L
*RCS < 0.3[V/ µs]
4. Select coil, schottky diodes, MOSFET and RCS which meet with the ratings
5. Select the output capacitor which meets with the ripple voltage requirements
6. Select the input capacitor
7. Work on with the compensation circuit
8. Work on with the Over-Voltage Protection (OVP) setting
9. Work on with the soft-start setting
10. Verify experimentally
Technical Note
Feedback the value of L
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11/20
2011.04 - Rev.A