NJM2625 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJM2625

PWM TYPE 3-PHASE DC BRUSHLESS MOTOR CONTOROL IC

Japan Radio Corporation  

♦TYPICAL APPLICATION

3.H1+

4.H1- H1

5.H2+

6.H2- H2

7.H3+

8.H3- H3

19.V+

2.Vref

20.F/R

Rotor

Position

Decode

r

V+

Vref

UVLO

10.OSC

9.Verr

Saw

Oscillator

PWM

COMP

Logic

1.FG

FG

11.GND

V+

Vm

16.WH

17.VH

18.UH

13.WL

14.VL

15.UL

12.ILIMIT

NJM2625

Motor

S

N

N

S

• 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).

-5-

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