ISO124

8

SBOS074C

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FIGURE 5. Battery Monitor for a 600V Battery Power System. (Derives input power from the battery.)

FIGURE 4. Optional

π Filter to Minimize Power-Supply Feedthrough Noise; Output Filter to Remove 500kHz Carrier Ripple. For

more information concerning output filters refer to Application Notes SBOA012 and SBFA001.

V

IN

V

Isolation Barrier

ISO124

+V

S2

+V

S1

–V

S1

±V

S1

–V

S2

Gnd2

Gnd1

R

1

4.75k

Ω

R

2

9.76k

Ω

1

µF1µF

1

µF1µF

10

µH

10

µH

±V

S2

10

µH

10

µH

1

µF1µF1µF1µF

C

1

220pF

C

2

1000pF

OPA237

15

1

9

10

7

2

e

8

–V

16

+V

15

1

9

10

7

2

10k

Ω

8

–V

16

+V

10k

Ω

e

e

e

10k

Ω

10k

Ω

Charge/Discharge Control

INA105

25k

Ω

25k

Ω

25k

Ω

25k

Ω

2

3

1

e

50

V =

2

+V –V

74

5

6

e

1

V =

2

Control

Section

ISO124

This Section Repeated 49 Times.

ISO124