ACS713 데이터 시트보기 (PDF) - Allegro MicroSystems

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ACS713

Fully Integrated, Hall Effect-Based Linear Current Sensor IC with 2.1 kVRMS Isolation and a Low-Resistance Current Conductor

Allegro MicroSystems 

ACS713

Fully Integrated, Hall Effect-Based Linear Current Sensor IC

with 2.1 kVRMS Isolation and a Low-Resistance Current Conductor

Typical Applications

+5 V

+5 V

CBYP

0.1 μF

R1

33 kΩ

1 IP+

8

VCC

2 IP+

7

VIOUT

R2

100 kΩ

VOUT

RPU

100 kΩ

4

–

5

1

Fault

IP

ACS713

3 IP– FILTER 6

4 IP–

5

CF

GND

3 + 2 U1

LMV7235

D1

1N914

Application 2. 10 A Overcurrent Fault Latch. Fault threshold

set by R1 and R2. This circuit latches an overcurrent fault

and holds it until the 5 V rail is powered down.

VS1

CBYP

0.1 μF

R1

100 kΩ

R2

100 kΩ

1 IP+

8

VCC

2 IP+

7

VIOUT

IP

ACS713

RF

1 kΩ

3 IP– FILTER 6

4 IP– GND 5

CF

0.01 μF

1+

LM321

5

4

3–

2

R3

3.3 kΩ

VOUT

C1

1000 pF

Application 3. This configuration increases gain to 610 mV/A

(tested using the ACS712ELC-05A).

+5 V

VS2

+5 V

Application 4. Control circuit for MOSFET ORing.

1 IP+

8

VCC

2 IP+

7

VIOUT

VOUT

CBYP

0.1 μF

+

IP1

ACS713

3 IP– FILTER 6

4 IP–

5

GND

VREF –

CF

U1

LMC6772

Q3

2N7002

Q1

FDS6675a

R3

10 kΩ

1 IP+

8

VCC

2 IP+

7

VIOUT

VOUT

CBYP

0.1 μF

+

IP2

ACS713

3 IP– FILTER 6

4 IP– GND 5

VREF –

CF

U2

LMC6772

Q2

FDS6675a

R4

10 kΩ

Q4

2N7002

R1

100 kΩ

LOAD

R2

100 kΩ

Allegro MicroSystems, Inc.

11

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

www.allegromicro.com

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