8

®

ISO122

FIGURE 4. Optional

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

For more information concerning output filter refer to AB-023.

Isolation Barrier

–V

S1

10

µH

10

µH

10

µH

10

µH

1

µF

1

µF1µF1µF

1

µF

1

µF1µF1µF

±V

S1

V

IN

ISO122

+V

S1

+V

S2

–V

S2

Gnd

13k

Ω

13k

Ω

100pF

+

–

6

V

Gnd

4700pF

385

Ω

Charge/Discharge

Control

10k

Ω

10k

Ω

25k

Ω

25k

Ω

7

–V

+V

25k

Ω

25k

Ω

+

–

INA105

1

3

V = e

50

2

5

6

V = e

1

2

Control

Section

+V

ISO122P

10k

Ω

10k

Ω

15

9

7

8

–V

+V

ISO122P

9

7

8

–V

4

e

e

e

e

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

10

±V

S2

This Section Repeated 49 Times.

10

1

2

16

15

16

2

1

OPA602

2

3

2