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R 2
(1) COM
(2) V B(U)
(17) P
R 5
C 5
C 2
C 1
(3) V CC(U)
(4) IN (UH)
(5) IN (UL)
(6) V S(U)
(7) V B(V)
VCC
HIN
LIN
COM
VB
HO
VS
LO
(18) U
(19) N U
C 3
V DC
(8) V CC(V)
(9) IN (VH)
(10) IN (VL)
VCC
HIN
LIN
VB
HO
VS
(20) N V
(21) V
M
C 2
C 1
(11) V S(V)
COM
LO
(12) V B(W)
(13) V CC(W)
(14) IN (WH)
(15) IN (WL)
VCC
HIN
LIN
VB
HO
VS
(22) N W
(23) W
C 2
C 1
(16) V S(W)
COM
LO
For 3-phase current sensing and protection
R 4
15-V
Supply
C 4
R 3
Figure 9. Example of Application Circuit
4th Notes:
1. About pin position, refer to Figure 1.
2. RC-coupling (R 5 and C 5 , R 4 and C 6 ) and C 4 at each input of Motion SPM ? 5 product and MCU are useful to prevent improper input signal caused by surge-noise.
3. The voltage-drop across R 3 affects the low-side switching performance and the bootstrap characteristics since it is placed between COM and the source terminal of the low-
side MOSFET. For this reason, the voltage-drop across R 3 should be less than 1 V in the steady-state.
4. Ground-wires and output terminals, should be thick and short in order to avoid surge-voltage and malfunction of HVIC.
5. All the filter capacitors should be connected close to Motion SPM 5 product, and they should have good characteristics for rejecting high-frequency ripple current.
?2012 Fairchild Semiconductor Corporation
FSB50250UD Rev. C4
8
www.fairchildsemi.com
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