ACS710KLATR View Datasheet(PDF) - Allegro MicroSystems

Part Name

Description

MFG CO.

ACS710KLATR

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

Allegro MicroSystems 

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ACS710

120 kHz Bandwidth, High-Voltage Isolation

Current Sensor with Integrated Overcurrent Detection

Setting Overcurrent Fault Switchpoint

Setting 12CB and 25CB Versions

The VOC needed for setting the overcurrent fault switchpoint can

be calculated as follows:

VOC = Sens × | IOC | ,

where VOC is in mV, Sens in mV/A, and IOC (overcurrent fault

switchpoint) in A.

| Ioc  | is the overcurrent fault switchpoint for a bidirectional (AC)

current, which means a bidirectional sensor will have two sym-

metrical overcurrent fault switchpoints, +IOC and –IOC .

See the following graph for IOC and VOC ranges.

IOC

0.4 VCC / Sens

0.25 VCC / Sens

0

– 0.25 VCC / Sens

– 0.4 VCC / Sens

IOC versus VOC

(12CB and 25CB Versions)

Not Valid Range

Valid Range

0. 25 VCC

0. 4 VCC

VOC

Example: For ACS710KLATR-25CB-T, if required overcurrent fault switchpoint is 50 A, and VCC = 5 V, then the

required VOC can be calculated as follows:

VOC = Sens × IOC = 28 × 50 = 1400 (mV)

Allegro MicroSystems, LLC

15

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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