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DRF1203_11 Datasheet, PDF (3/4 Pages) Microsemi Corporation – MOSFET Driver Hybrid
The Function (FN, pin 3) is the invert or non-invert select Pin, it is Internally held high.
FN (pin 3)*
HIGH
HIGH
LOW
LOW
Truth Table *Referenced to SG
IN (pin 4)*
HIGH
LOW
HIGH
LOW
MOSFET
ON
OFF
OFF
ON
DRF1203
Figure 2, DRF1203 Test Circuit
The Test Circuit illustrated above was used to evaluate the DRF1203 (available as an evaluation Board DRF12XX / EVALSW.) The input
control signal is applied to the DRF1203 via IN(4) and SG(5) pins using RG188. This provides excellent noise immunity and control of the
signal ground currents.
The +VDD inputs (2,6) are by-passed (C1,C2, C4-C9), this is in addition to the internal by-passing mentioned previously. The capacitors used
for this function must be capable of supporting the RMS currents and frequency of the gate load. RL set for IDM at VDS max this load is used to
evaluate the output performance of the DRF1203.