NJM2625

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♦TYPICAL APPLICATION

2.Vref

10.OSC

9.Verr

1.FG

11.GND

20.F/R

16.WH

17.VH

18.UH

13.WL

14.VL

15.UL

12.ILIMIT

3.H1+

4.H1-

5.H2+

6.H2-

7.H3+

8.H3-

19.V

+

V

+

Rotor

Position

Decode

r

V

+

UVLO

Vref

Logic

Saw

Oscillator

FG

PWM

COMP

H1

H2

H3

N

N

S

S

Motor

Vm

• A rotation direction change must be made after motor stopped completely.

• When PWM duty is extremely small, two or more switching elements cannot be driven entirely.

In such case, switching elements will generate excess heat and it may cause destruction of the

switching devices. Therefore, extensive heat evaluation is necessary for switching device selection

particularly in consideration of the area of safety operation (ASO).