Time (0.5 ms/div)

C036

0 A

12 V

Output B

Outut A

Input

0.1 µF

2.7-V to 36-V

Supply

-

+

IN-

IN+

GND

REF

VS

OUT

0.1 µF

2.7-V to 36-V

Supply

Supply

-

+

To REF of Second

Channel

IN-

IN+

GND

REF

VS

OUT

From Out of

First Channel

Paralleled

Output

Load

INA250A1, INA250A2, INA250A3, INA250A4

www.ti.com

SBOS511B – APRIL 2015 – REVISED DECEMBER 2015

Typical Applications (continued)

8.2.2 Parallel Multiple INA250 Devices for Higher Current

Figure 39. Parallel Summing Configuration

8.2.2.1 Design Requirements

The parallel connection for multiple INA250 devices can be used to reduce the equivalent overall sense

resistance, enabling monitoring of higher current levels than a single device is able to accommodate alone. This

configuration also uses a summing arrangement, as described in the Current Summing section. A parallel

summing configuration is shown in Figure 39.

8.2.2.2 Detailed Design Procedure

With a summing configuration the output of the first channel is fed into the reference input of the second, adding

the distributed measurements back together into a single measured value.

8.2.2.3 Application Curve

Figure 40. Parallel Configuration Output Response

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