ACS710KLATR-6BB-T Allegro Microsystems Inc, ACS710KLATR-6BB-T Datasheet

ACS710KLATR-6BB-T

Manufacturer Part Number

ACS710KLATR-6BB-T

Description

CURRENT SENSOR WITH INTEGRATED OVERCURRENT DETECTION

Manufacturer

Allegro Microsystems Inc

Series

-r

Datasheet

1.ACS710KLATR-12CB-T.pdf (17 pages)

Specifications of ACS710KLATR-6BB-T

Current - Sensing

±6A

Accuracy

±4.05%

Sensitivity

100mV/A

Current - Supply

11mA

Sensor Type

Hall Effect

Voltage - Supply

3 V ~ 5.5 V

Output

2.5V

Frequency

120kHz

Response Time

4µs

Polarization

Bidirectional

Operating Temperature

-40°C ~ 125°C

Package / Case

16-SOIC (0.295", 7.50mm Width)

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Available stocks

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Price

Company:

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Part Number:

ACS710KLATR-6BB-T

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ALLEGRO

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1 934

Company:

Meier Automation Equipment Co., Limited

Part Number:

ACS710KLATR-6BB-T

Manufacturer:

ALLEGRO/雅丽高

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Features and Benefits

▪ Industry-leading noise performance with greatly improved

▪ Small footprint package suitable for space-constrained

▪ 1 mΩ primary conductor resistance for low power loss

▪ High isolation voltage, suitable for line-powered

▪ User-adjustable Overcurrent Fault level

▪ Overcurrent Fault signal typically responds to an

▪ Integrated shield virtually eliminates capacitive coupling

▪ Filter pin capacitor improves resolution in low bandwidth

▪ 3 to 5.5 V, single supply operation

▪ Factory trimmed sensitivity and quiescent output voltage

▪ Chopper stabilization results in extremely stable quiescent

▪ Ratiometric output from supply voltage

Package: 16-pin SOIC Hall Effect IC

Package (suffix LA)

ACS710-DS, Rev. 5

bandwidth through proprietary amplifier and filter design

techniques

applications

overcurrent condition in < 2 μs

from current conductor to die due to high dV/dt voltage

transients

applications

output voltage

IP+

IP–

Current Sensor with Integrated Overcurrent Detection

ACS710

FAULT_EN

FILTER

FAULT

VIOUT

VZCR

Approximate Scale 1:1

GND

VOC

VCC

120 kHz Bandwidth, High Voltage Isolation

Fault_EN

IOUT

1 nF

0.1 μF

Description

The Allegro

precise means for current sensing applications in industrial,

commercial, and communications systems. The device is offered

in a small footprint surface mount package that allows easy

implementation in customer applications.

The ACS710 consists of a precision linear Hall sensor integrated

circuit with a copper conduction path located near the surface

of the silicon die. Applied current flows through the copper

conduction path, and the analog output voltage from the Hall

sensor linearly tracks the magnetic field generated by the

applied current. The accuracy of the ACS710 is maximized

with this patented packaging configuration because the Hall

element is situated in extremely close proximity to the current

to be measured.

High level immunity to current conductor dV/dt and stray

electric fields, offered by Allegro proprietary integrated shield

technology, guarantees low ripple at output and low offset drift

in high-side, high voltage applications.

The voltage on the Overcurrent Input (VOC pin) allows

customers to define an overcurrent fault threshold for the device.

When the current flowing through the copper conduction path

(between the IP+ and IP– pins) exceeds this threshold, the open

drain Overcurrent Fault pin will transition to a logic low state.

Factory programming of the linear Hall sensor inside of the

ACS710 results in exceptional accuracy in both analog and

digital output signals.

The internal resistance of the copper path used for current

sensing is typically 1 mΩ, for low power loss. Also, the current

conduction path is electrically isolated from the low voltage

Continued on the next page…

, R

ACS710 current sensor provides economical and

Sets resistor divider reference for V

Noise and bandwidth limiting filter capacitor

Fault delay setting capacitor, 22 nF maximum

Use of capacitor required

Use of resistor optional, 330 kΩ recommended.

If used, resistor must be connected between

¯ F ¯ ¯ A ¯ U ¯ ¯ L ¯ ¯ T ¯ pin and V

ACS710

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ACS710KLATR-6BB-T Summary of contents

Page 1

Current Sensor with Integrated Overcurrent Detection Features and Benefits ▪ Industry-leading noise performance with greatly improved bandwidth through proprietary amplifier and filter design techniques ▪ Small footprint package suitable for space-constrained applications ▪ 1 mΩ primary conductor resistance for low ...

Page 2

... The leadframe is plated with 100% matte tin, which is compatible with standard lead (Pb) free printed circuit board assembly processes. Internally, the device is Pb-free, except for flip-chip high-temperature Selection Guide I P Part Number (A) ACS710KLATR-6BB-T ±6 ACS710KLATR-12CB-T ±12.5 ACS710KLATR-25CB-T ±25 *Contact Allegro for packing options. Absolute Maximum Ratings ...

Page 3

ACS710 Current Sensor with Integrated Overcurrent Detection Hall Bias FAULT_EN VOC Sensitivity Trim IP+ Hall IP– Amplifier Terminal List Table Number 1 through 4 Pin-out Diagram 5 through 8 16 FAULT_EN IP VOC IP+ 2 VCC 14 IP+ ...

Page 4

ACS710 Current Sensor with Integrated Overcurrent Detection COMMON OPERATING CHARACTERISTICS Characteristic ELECTRICAL CHARACTERISTICS Supply Voltage 1 Nominal Supply Voltage Supply Current Output Capacitance Load Output Resistive Load Magnetic Coupling from Device Conductor to Hall Element 2 Internal Filter Resistance Primary ...

Page 5

ACS710 Current Sensor with Integrated Overcurrent Detection COMMON OPERATING CHARACTERISTICS Characteristic OVERCURRENT CHARACTERISTICS (continued) Fault Enable (FAULT_EN Pin) Input High Voltage Threshold Fault Enable (FAULT_EN Pin) Input Resistance Fault Enable (FAULT_EN Pin) Delay 8 Overcurrent Fault Response Time Overcurrent Fault ...

Page 6

ACS710 Current Sensor with Integrated Overcurrent Detection PERFORMANCE CHARACTERISTICS Characteristic Symbol X6B CHARACTERISTICS Optimized Accuracy Range 1 I POA Linear Sensing Range I R X6B Characteristics 3 Noise 2 V NOISE(rms) Sensitivity 3 Sens Electrical ...

Page 7

ACS710 Current Sensor with Integrated Overcurrent Detection PERFORMANCE CHARACTERISTICS (continued) Characteristic Symbol X25C CHARACTERISTICS Optimized Accuracy Range 1 I POA Linear Sensing Range I R X25C Characteristics Noise V NOISE(rms) Sensitivity 3 Sens ...

Page 8

ACS710 Current Sensor with Integrated Overcurrent Detection ACS710 Bandwidth versus External Capacitor Value, C 1000 100 10 1 0.1 0.01 ACS710x-25C V CC 1000 900 800 700 600 500 400 Capacitance (nF) ACS710x-12C V CC 1600 1400 ...

Page 9

ACS710 Current Sensor with Integrated Overcurrent Detection Electrical Offset Voltage versus Ambient Temperature -10 -15 -20 -25 –50 - Nonlinearity versus Ambient Temperature 0.10 0.05 0 -0.05 -0.10 ...

Page 10

Page 11

... CC 0 – 0. Sens CC – 0 Sens CC Example: For ACS710KLATR-25CB-T, if required overcurrent fault switchpoint and V required V can be calculated as follows: OC 120 kHz Bandwidth, High Voltage Isolation Setting Overcurrent Fault Switchpoint | Ioc | is the overcurrent fault switchpoint for a bi- directional (AC) current, which means a bi-directional sensor will have two symmetrical overcurrent fault ...

Page 12

ACS710 Current Sensor with Integrated Overcurrent Detection Overcurrent Fault Operation The primary concern with high-speed fault detection is that noise may cause false tripping. Various applications have or need to be able to ignore certain faults that are due to ...

Page 13

ACS710 Current Sensor with Integrated Overcurrent Detection 5. The ¯ F ¯ ¯ A ¯ ¯ U ¯ ¯ L ¯ ¯ T ¯ pin did not reach the 2 V latch point before the OC fault condition cleared. Because ...

Page 14

ACS710 Current Sensor with Integrated Overcurrent Detection Definitions of Accuracy Characteristics Sensitivity (Sens). The change in sensor output in response change through the primary conductor. The sensitivity is the product of the magnetic circuit sensitivity (G ...

Page 15

ACS710 Current Sensor with Integrated Overcurrent Detection Definitions of Dynamic Response Characteristics Propagation delay (t ). The time required for the sensor PROP output to reflect a change in the primary current signal. Propaga- tion delay is attributed to inductive ...

Page 16

ACS710 Current Sensor with Integrated Overcurrent Detection 10.30 ±0. 16X 0.10 C 1.27 BSC 0.51 0.31 For Reference Only; not for tooling use (reference MS-013AA) Dimensions in millimeters Dimensions exclusive of mold flash, gate burrs, and ...

Page 17

ACS710 Current Sensor with Integrated Overcurrent Detection Revision History Revision Rev. 5 Copyright ©2007-2011, Allegro MicroSystems, Inc. The products described herein are protected by U.S. patents: 7,166,807; 7,425,821; 7,573,393; and 7,598,601. Allegro MicroSystems, Inc. reserves the right to make, from ...

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