©2013 Fairchild Semiconductor Corporation

10

www.fairchildsemi.com

FSB44104A Rev. C0

Figure 8. Typical Application Circuit

2nd Notes:

1. To avoid malfunction, the wiring of each input should be as short as possible (less than 2~3 cm).

3. Input signal is active-HIGH type. There is a 5 kΩ resistor inside the IC to pull-down each input signal line to GND. RC coupling circuits is recommended for the prevention of

5. The zener diode should be adopted for the protection of ICs from the surge destruction between each pair of control supply terminals(recommended zener diode = 24 V / 1 W).

Fault

+15V

+5V

Motor

Gating UH

Gating VH

Gating WL

Gating VL

Gating UL

M

C

U

Current Sensing

LVIC

VFO

VCC

IN(UL)

IN(VL)

IN(WL)

COM

OUT(UL)

OUT(VL)

OUT(WL)

U (4)

V (3)

W (2)

P (1)

(12) COM

HVIC

VB(W)

COM

VS(W)

OUT(WH)

VB(V)

VS(V)

VB(U)

VS(U)

VCC

IN(WH)

IN(VH)

IN(UH)

OUT(VH)

OUT(UH)

VS(W)

VS(V)

VS(U)

Gating WH