Data Sheet

FSBB20CH60CL Motion SPM® 3 Series
©2008 Fairchild Semiconductor Corporation 13 www.fairchildsemi.com
FSBB20CH60CL Rev. C3
Figure 13. Typical Application Circuit
4th Notes:
1. To avoid malfunction, the wiring of each input should be as short as possible (less than 2 - 3cm).
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
Figure11).
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
= 1.8 ms
(typ.)) Please refer to the 2nd note 5 for calculation method.
6. Input signal is active-HIGH type. There is a 5 k
resistor inside the IC to pull down each input signal line to GND. RC coupling circuits should be used to prevent input signal
oscillation. R
S
C
PS
time constant should be selected in the range 50 ~ 150 ns. C
PS
should not be less than 1 nF (recommended R
S
= 100 , C
PS
= 1 nF).
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 ~ 2.0 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.
Fault
+15 V
C
BS
C
BSC
C
BS
C
BSC
C
BS
C
BSC
C
SP15
C
SPC15
C
FOD
+5 V
R
PF
C
BPF
R
S
M
Vdc
C
DCS
Gating UH
Gating VH
Gating WH
Gating WL
Gating VL
Gating UL
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
COM
VCC
IN(UL)
IN(VL)
IN(WL)
VFO
C(FOD)
C(SC)
OUT(UL)
OUT(VL)
OUT(WL)
N
U
(21)
N
V
(22)
N
W
(23)
U (24)
V (25)
W (26)
P (27)
(20) V
S(W)
(19) V
B(W)
(16) V
S(V)
(15) V
B(V)
(8) C
SC
(7) C
FOD
(6) V
FO
(5) IN
(WL)
(4) IN
(VL)
(3) IN
(UL)
(2) COM
(1) V
CC(L)
VCC
VB
OUT
COM
VS
IN
VB
VS
OUT
IN
COM
VCC
VCC
VB
OUT
COM
VS
IN
(18) V
CC(H)
(17) IN
(WH)
(14) V
CC(H)
(13) IN
(VH)
(12) V
S(U)
(11) V
B(U)
(10) V
CC(H)
(9) IN
(UH)
Input Signal for
Short-Circuit Protection
C
SC
V
SL
R
S
R
S
R
S
R
S
R
S
R
S
C
PS
C
PS
C
PS
C
PS
C
PS
C
PS