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15 V
Gating WH
R BS
D BS
C BS
C BSC
(19) V B(W)
(18) V CC(WH)
(17) IN (WH)
(20) V S(W)
VB
VCC
COM
IN
OUT
VS
P (27)
W (26)
R BS
D BS
(15) V B(V)
(14) V CC(VH)
VB
Gating VH
C BS
C BSC
(13) IN (VH)
(16) V S(V)
VCC
COM
IN
OUT
VS
V (25)
M
M
C
U
Gating UH
R BS
R F
D BS
C BS
C BSC
(11) V B(U)
(10) V CC(UH)
(9) IN (UH)
(12) V S(U)
VB
VCC
COM
IN
OUT
VS
U (24)
C DCS
Vdc
5V
Fault
R S
R PF
C SC
C FOD
(8) C SC
(7) C FOD
(6) V FO
C(SC)
C(FOD)
VFO
OUT(WL)
N W (23)
R SW
Gating WL
(5) IN (WL)
IN(WL) OUT(VL)
Gating VL
(4) IN (VL)
IN(VL)
N V (22)
R SV
(3) IN (UL)
Gating UL
(2) COM
IN(UL)
C BPF
C PF
(1) V CC(L)
COM
VCC
OUT(UL)
V SL
N U (21)
R SU
C SP15
C SPC15
Input Signal for
Short-Circuit Protection
W-Phase Current
V-Phase Current
U-Phase Current
R FW
R FV
R FU
C FW
C FV
C FU
Figure 11. Typical Application Circuit
4th Notes:
1. To avoid malfunction, the wiring of each input should be as short as possible (less than 2 - 3 cm).
2. By virtue of integrating an application-specific type of HVIC inside the Motion SPM ? 3 product, direct coupling to MCU terminals without any optocoupler or transformer isola-
tion is possible.
3. V FO output is open-collector type. This signal line should be pulled up to the positive side of the 5 V power supply with approximately 4.7 k ? resistance (please refer to Figure
9).
4. C SP15 of around seven times larger than bootstrap capacitor C BS is recommended.
5. V FO output pulse width should be determined by connecting an external capacitor (C FOD ) between C FOD (pin 7) and COM (pin 2). (Example : if C FOD = 33 nF, then t FO = ???? ms
(typ.)) Please refer to the 2nd note 5 for calculation method.
6. Input signal is active-HIGH type. There is a 3.3 k ?? resistor inside the IC to pull down each input signal line to GND. When employing RC coupling circuits, set up such RC cou-
ple that input signal agree with turn-off / turn-on threshold voltage.
7. To prevent errors of the protection function, the wiring around R F and C SC should be as short as possible.
8. In the short-circuit protection circuit, please select the R F C SC time constant in the range 1.5 ~ 2 ? s.
9. Each capacitor should be mounted as close to the pins of the Motion SPM 3 product as possible.
10. To prevent surge destruction, the wiring between the smoothing capacitor and the P & GND pins should be as short as possible. The use of a high-frequency non-inductive
capacitor of around 0.1 ~ 0.22 ? F between the P & GND pins is recommended.
11. Relays are used in almost every systems of electrical equipment in home appliances. In these cases, there should be sufficient distance between the MCU and the relays.
12. C SPC15 should be over 1 ? F and mounted as close to the pins of the Motion SPM 3 product as possible.
?2006 Fairchild Semiconductor Corporation
FSB32560 Rev. C3
12
www.fairchildsemi.com
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