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FCBS0550 Rev. A

Note:

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 HVIC inside the SPM, direct coupling to CPU terminals without any opto-coupler or transformer isolation is possible.

(typ.)) Please refer to the note 5 for calculation method.

6. Input signal is High-Active type. There is a 3.3k

Ω resistor inside the IC to pull down each input signal line to GND. When employing RC coupling circuits, set up such RC couple

that input signal agree with turn-off/turn-on threshold voltage.

9. Each capacitor should be mounted as close to the pins of the SPM as possible.

10. To prevent surge destruction, the wiring between the smoothing capacitor and the P&COM pins should be as short as possible. The use of a high frequency non-inductive

capacitor of around 0.1~0.22

µF between the P&COM 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 CPU and the relays.

Fig. 11. Typical Application Circuit

Fault

15V line

C

BS

C

BSC

R

BS

D

BS

C

BS

C

BS C

R

BS

D

BS

C

BS

C

BSC

R

BS

D

BS

C

S P15

C

S PC 15

C

FOD

5V line

R

PF

C

BPF

R

S

M

Vdc

C

DCS

Gating UH

Gating VH

Gating W H

Gating W L

Gating VL

Gating UL

C

PF

C

P

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(W L)

VFO

C(FOD)

C(SC)

OUT(UL)

OUT(VL)

OUT(W L)

N

N

N

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

(W L)

(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(W H)

(17) IN

(W H)

(14) V

CC(VH)

(13) IN

(VH)

(12) V

S(U)

(11) V

B(U)

(10) V

CC(UH)

(9) IN

(UH)

Input S ig nal for S hort-

C irc uit Protec tion

C

SC

R

E(UH)

V

SL

R

E(VH)

R

E(W H)