ACS710(2013) 데이터 시트보기 (PDF) - Allegro MicroSystems

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ACS710
(Rev.:2013)

120 kHz Bandwidth, High Voltage Isolation Current Sensor with Integrated Overcurrent Detection

Allegro MicroSystems 

ACS710

120 kHz Bandwidth, High Voltage Isolation

Current Sensor with Integrated Overcurrent Detection

FAULT_EN

VOC

IP+

IP–

Hall

Bias

Sensitivity

Trim

Functional Block Diagram

Latching Version

VCC

POR

POR

FAULT Reset

OC Fault

Fault

Comparator

2VREF

–

+

DQ

CLK

R

Fault Latch

Drain

FAULT

Control

Logic

3 mA

VZCR

Signal

Recovery

Hall

Amplifier

GND

RF(INT)

VOUT(Q)

Trim

FILTER

VIOUT

Pin-out Diagram

IP+ 1

IP+ 2

IP+ 3

IP+ 4

IP– 5

IP– 6

IP– 7

IP– 8

16 FAULT_EN

15 VOC

14 VCC

13 FAULT

12 VIOUT

11 FILTER

10 VZCR

9 GND

Terminal List Table, Latching Version

Number

1 through 4

Name

IP+

Description

Sensed current copper conduction path pins. Terminals for current being sensed;

fused internally, loop to IP– pins; unidirectional or bidirectional current flow.

5 through 8

9

10

11

12

IP–

GND

VZCR

FILTER

VIOUT

Sensed current copper conduction path pins. Terminals for current being sensed;

fused internally, loop to IP+ pins; unidirectional or bidirectional current flow.

Device ground connection.

Voltage Reference Output pin. Zero current (0 A) reference; output voltage on this

pin scales with VCC . (Not a highly accurate reference.)

Filter pin. Terminal for an external capacitor connected from this pin to GND to set

the device bandwidth.

Analog Output pin. Output voltage on this pin is proportional to current flowing

through the loop between the IP+ pins and IP– pins.

13

¯F¯ ¯A ¯U ¯¯L¯ ¯T¯

Overcurrent Fault pin. When current flowing between IP+ pins and IP– pins

exceeds the overcurrent fault threshold, this pin transitions to a logic low state.

14

VCC Supply voltage.

15

VOC

Overcurrent Input pin. Analog input voltage on this pin sets the overcurrent fault

threshold.

16

FAULT_EN Enables overcurrent faulting when high. Resets ¯F¯¯A¯U¯¯L¯¯T¯ when low.

Allegro MicroSystems, LLC

4

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

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