©2006 Fairchild Semiconductor Corporation
13
www.fairchildsemi.com
FSAM50SM60A Rev. C4
FSAM50SM60A Moti
on
SPM®
2 Series
Figure 14. Application Circuit
4th Notes:
1. R
PL
C
PL
/R
PH
C
PH
/R
PF
C
PF
coupling at each Motion SPM
®
2 product input is recommended in order to prevent input signals’ oscillation and it should be as close as
possible to each Motion SPM 2 product input pin.
2. By virtue of integrating an application specific type HVIC inside the Motion SPM 2 product, direct coupling to MCU terminals without any optocoupler or transformer
isolation 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 12.
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 8) and COM
(L)
(pin 2). (Example : if C
FOD
= 33 nF, then
t
FO
= 1.8 ms (typ.)) Please refer to the 2nd note 6 for calculation method.
6. Each input signal line should be pulled up to the 5 V power supply with approximately 4.7 k
(at high side input) or 2 k
at low side input) resistance (other RC
coupling circuits at each input may be needed depending on the PWM control scheme used and on the wiring impedance of the system’s printed circuit board).
Approximately a 0.22 ~ 2 nF by-pass capacitor should be used across each power supply connection terminals.
7. To prevent errors of the protection function, the wiring around R
SC
, 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 3 ~ 4
s.
9. Each capacitor should be mounted as close to the pins of the Motion SPM 2 product as possible.
10. To prevent surge destruction, the wiring between the smoothing capacitor and the P & N 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&N pins is recommended.
11. Relays are used at almost every systems of electrical equipments of home appliances. In these cases, there should be sufficient distance between the MCU and
the relays. It is recommended that the distance be 5 cm at least.
COM(L)
VCC
IN(UL)
IN(VL)
IN(WL)
VFO
C(FOD)
C(SC)
OUT(UL)
OUT(VL)
OUT(WL)
N
U
(26)
N
V
(27)
N
W
(28)
U (29)
V (30)
W (31)
P (32)
(23) V
S(W)
(22) V
B(W)
(19) V
S(V)
(18) V
B(V)
(9) C
SC
(8) C
FOD
(7) V
FO
(5) IN
(WL)
(4) IN
(VL)
(3) IN
(UL)
(2) COM
(L)
(1) V
CC(L)
(10) R
SC
V
TH
(24)
R
TH
(25)
(6) COM
(L)
VCC
VB
OUT
COM
VS
IN
VB
VS
OUT
IN
COM
VCC
VCC
VB
OUT
COM
VS
IN
(21) V
CC(WH)
(20) IN
(WH)
(17) V
CC(VH)
(15) IN
(VH)
(16) COM
(H)
(14) V
S(U)
(13) V
B(U)
(12) V
CC(UH)
(11) IN
(UH)
Fault
15 V
C
BS
C
BSC
R
BS
D
BS
C
BS
C
BSC
R
BS
D
BS
C
BS
C
BSC
R
BS
D
BS
C
SP15
C
SPC15
C
FOD
5 V
R
PF
C
PL
C
BPF
R
PL
R
PL
R
PL
C
PL
C
PL
5 V
C
PH
R
PH
C
PH
R
PH
C
PH
R
PH
R
S
R
S
R
S
R
S
R
S
R
S
R
S
M
Vdc
C
DCS
5 V
R
TH
C
SP05
C
SPC05
THERMISTOR
Temp. Monitoring
Gating UH
Gating VH
Gating WH
Gating WH
Gating VH
Gating UH
C
PF
M
C
U
R
FU
R
FV
R
FW
R
SU
R
SV
R
SW
C
FU
C
FV
C
FW
W-Phase Current
V-Phase Current
U-Phase Current
R
F
C
SC
R
SC
R
CSC
R
E(WH)
R
E(VH)
R
E(UH)
