ACS710KLATR-6BB-T

ACS710 120 kHz Bandwidth, High-Voltage Isolation Current Sensor with Integrated Overcurrent Detection Not for New Design These parts are in production but have been determined to be NOT FOR NEW DESIGN. This classification indicates that sale of this device is currently restricted to existing customer applications. The device should not be purchased for new design applications because obsolescence in the near future is probable. Samples are no longer available. Date of status change: June 5, 2017 Recommended Substitutions: For existing customer transition, and for new customers or new applications, use ACS720. NOTE: For detailed information on purchasing options, contact your local Allegro field applications engineer or sales representative. Allegro MicroSystems, LLC reserves the right to make, from time to time, revisions to the anticipated product life cycle plan for a product to accommodate changes in production capabilities, alternative product availabilities, or market demand. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, LLC assumes no responsibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use. ACS710 120 kHz Bandwidth, High-Voltage Isolation 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 power loss ▪ High isolation voltage, suitable for line-powered applications ▪ User-adjustable Overcurrent Fault level ▪ Overcurrent Fault signal typically responds to an overcurrent condition in < 2 μs ▪ Integrated shield virtually eliminates capacitive coupling from current conductor to die due to high dV/dt voltage transients ▪ Filter pin capacitor improves resolution in low bandwidth applications ▪ 3 to 5.5 V single supply operation ▪ Factory-trimmed sensitivity and quiescent output voltage ▪ Chopper stabilization results in extremely stable quiescent output voltage ▪ Ratiometric output from supply voltage CB Certificate Number: US-23711-UL Package: 16-Pin SOIC Hall-Effect IC Package (suffix LA) Description The Allegro™ ACS710 current sensor provides economical and 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, results in low ripple on the 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… Not to scale Typical Application Circuit 1 2 3 IP 4 5 6 7 8 IP+ IP+ IP+ FAULT_EN ACS710 VOC VCC IP+ FAULT IP– VIOUT IP– FILTER IP– VZCR IP– GND ACS710-DS, Rev. 13 MCO-0000196 16 Fault_EN RH VCC RH, RL 15 14 12 11 RPU COC VIOUT 10 9 CF RL 13 1 nF A COC 0.1 µF B CF Sets resistor divider reference for VOC Noise and bandwidth limiting filter capacitor Fault delay setting capacitor, 22 nF maximum A Use of capacitor required B Use of resistor optional, 330 kΩ recommended. If used, resistor must be connected between ¯F¯ ¯A  ¯U¯¯L¯ ¯T¯  pin and VCC. November 13, 2017 ACS710 120 kHz Bandwidth, High-Voltage Isolation Current Sensor with Integrated Overcurrent Detection Description (continued) sensor inputs and outputs. This allows the ACS710 family of sensors to be used in applications requiring electrical isolation, without the use of opto-isolators or other costly isolation techniques. Pb‑based solder balls, currently exempt from RoHS. The device is fully calibrated prior to shipment from the factory. The ACS710 is provided in a small, surface-mount SOIC16 package. 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 Applications include: • Motor control and protection • Load management and overcurrent detection • Power conversion and battery monitoring / UPS systems Selection Guide Part Number ACS710KLATR-6BB-T2,3 Sens (typ) at VCC = 5 V (mV/A) IP (A) ±6 151 ACS710KLATR-10BB-T2 ±10 85 ACS710KLATR-12CB-T2 ±12.5 56 ACS710KLATR-25CB-T2 ±25 ACS710KLATR-6BB-NL-T2 ±6 151 ACS710KLATR-10BB-NL-T2 ±10 85 ACS710KLATR-12CB-NL-T2 ±12.5 56 ACS710KLATR-25CB-NL-T2 ±25 Latched Fault TA (°C) Yes –40 to 125 Tape and Reel, 1000 pieces per reel No –40 to 125 Tape and Reel, 1000 pieces per reel Packing1 28 28 1 Contact Allegro 2 Variant for packing options. not intended for automotive applications. Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 2 ACS710 120 kHz Bandwidth, High-Voltage Isolation Current Sensor with Integrated Overcurrent Detection Absolute Maximum Ratings Characteristic Symbol Supply Voltage Notes Rating Unit VCC 8 V Filter Pin VFILTER 8 V Analog Output Pin VIOUT 32 V VOC 8 V Overcurrent Input Pin ¯ ¯A  ¯U¯¯L¯ ¯T¯ Pin Overcurrent ¯F V ¯F¯ ¯A  ¯U¯¯L¯ ¯T¯  8 V Fault Enable (FAULT_EN) Pin VFAULTEN 8 V Voltage Reference Output Pin VZCR 8 V DC Reverse Voltage: VCC, FILTER, VIOUT, VOC, ¯U¯¯L¯ ¯T¯,  FAULT_EN, and VZCR Pins ¯F ¯ ¯ A  VRdcx –0.5 V Excess to Supply Voltage: FILTER, VIOUT, VOC, ¯F ¯ ¯A  ¯U¯¯L¯ ¯T¯,  FAULT_EN, and VZCR Pins VEX 0.3 V IIOUT(Source) 3 mA IIOUT(Sink) 1 mA –40 to 125 °C Output Current Source Output Current Sink Operating Ambient Temperature TA Voltage by which pin voltage can exceed the VCC pin voltage Range K Junction Temperature TJ(max) 165 °C Storage Temperature Tstg –65 to 170 °C Isolation Characteristics Characteristic Symbol Dielectric Surge Strength Test Voltage VSURGE Dielectric Strength Test Voltage* Working Voltage for Basic Isolation VISO VWVBI Notes Rating Unit Tested ±5 pulses at 2/minute in compliance to IEC 61000-4-5 1.2 µs (rise) / 50 µs (width). 6000 V Agency type-tested for 60 seconds per IEC/UL 60950-1 (2nd Edition). 3600 VRMS Agency type-tested for 60 seconds per UL 1577. 3000 VRMS Maximum approved working voltage for basic (single) isolation according to IEC/UL 60950-1 (2nd Edition). 870 VPK or VDC 616 VRMS Clearance DCL Minimum distance through air from IP leads to signal leads. 7.5 mm Creepage DCR Minimum distance along package body from IP leads to signal leads. 7.5 mm *Production tested for 1 second at 3600 VRMS in accordance with both UL 1577 and IEC/UL 60950-1 (edition 2). Thermal Characteristics Characteristic Package Thermal Resistance Symbol RθJA Test Conditions Value Unit When mounted on Allegro demo board with 1332 mm2 (654 mm2 on component side and 678 mm2 on opposite side) of 2 oz. copper connected to the primary leadframe and with thermal vias connecting the copper layers. Performance is based on current flowing through the primary leadframe and includes the power consumed by the PCB. 17 ºC/W Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 3 120 kHz Bandwidth, High-Voltage Isolation Current Sensor with Integrated Overcurrent Detection ACS710 Functional Block Diagram Latching Version VCC Hall Bias FAULT_EN D Q CLK R POR POR Fault Latch FAULT Reset Drain – VOC + 2VREF OC Fault Control Logic FAULT 3 mA Fault Comparator – Sensitivity Trim IP+ VZCR + VIOUT Signal Recovery RF(INT) Hall Amplifier IP– VOUT(Q) Trim GND FILTER Terminal List Table, Latching Version Pin-Out Diagram IP+ 1 16 FAULT_EN IP+ 2 15 VOC IP+ 3 14 VCC IP+ 4 13 FAULT IP– 5 12 VIOUT IP– 6 11 FILTER IP– 7 10 VZCR IP– 8 9 GND Number Name Description 1,2,3,4 IP+ Sensed current copper conduction path pins. Terminals for current being sensed; fused internally, loop to IP– pins; unidirectional or bidirectional current flow. 5,6,7,8 IP– Sensed current copper conduction path pins. Terminals for current being sensed; fused internally, loop to IP+ pins; unidirectional or bidirectional current flow. 9 GND Device ground connection. 10 VZCR Voltage Reference Output pin. Zero current (0 A) reference; output voltage on this pin scales with VCC . (Not a highly accurate reference.) 11 FILTER Filter pin. Terminal for an external capacitor connected from this pin to GND to set the device bandwidth. 12 VIOUT 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 ¯U¯¯L¯ ¯T¯ when low. FAULT_EN Enables overcurrent faulting when high. Resets ¯F¯ ¯A  Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 4 120 kHz Bandwidth, High-Voltage Isolation Current Sensor with Integrated Overcurrent Detection ACS710 Functional Block Diagram Non-Latching Version VCC Hall Bias POR Drain – VOC + FAULT_EN FAULT 2VREF FAULT Reset 3 mA OC Fault IP+ VZCR Fault Comparator Sensitivity Trim VIOUT Signal Recovery RF(INT) Hall Amplifier IP– VOUT(Q) Trim GND FILTER Terminal List Table, Non-Latching Version Pin-Out Diagram IP+ 1 16 FAULT_EN IP+ 2 15 VOC IP+ 3 14 VCC IP+ 4 13 FAULT IP– 5 12 VIOUT IP– 6 11 FILTER IP– 7 10 VZCR IP– 8 9 GND Number Name Description 1,2,3,4 IP+ Sensed current copper conduction path pins. Terminals for current being sensed; fused internally, loop to IP– pins; unidirectional or bidirectional current flow. 5,6,7,8 IP– Sensed current copper conduction path pins. Terminals for current being sensed; fused internally, loop to IP+ pins; unidirectional or bidirectional current flow. 9 GND Device ground connection. 10 VZCR Voltage Reference Output pin. Zero current (0 A) reference; output voltage on this pin scales with VCC . (Not a highly accurate reference.) 11 FILTER Filter pin. Terminal for an external capacitor connected from this pin to GND to set the device bandwidth. 12 VIOUT 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. VOC Overcurrent Input pin. Analog input voltage on this pin sets the overcurrent fault threshold. 15 16 FAULT_EN Enables overcurrent faulting when high. Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 5 ACS710 120 kHz Bandwidth, High-Voltage Isolation Current Sensor with Integrated Overcurrent Detection COMMON OPERATING CHARACTERISTICS: Valid at TA = –40°C to 125°C, VCC = 5 V, unless otherwise specified Characteristic ELECTRICAL CHARACTERISTICS Supply Voltage1 Nominal Supply Voltage Supply Current Output Capacitance Load Output Resistive Load Magnetic Coupling from Device Conductor to Hall Element Internal Filter Resistance2 Symbol Test Conditions Min. Typ. Max. Units 3 – – 5 5.5 – V V ¯U¯¯L¯ ¯T¯ pin high VIOUT open, ¯ F¯ ¯A  VIOUT pin to GND VIOUT pin to GND – – 10 11 – – 14.5 10 – mA nF kΩ Current flowing from IP+ to IP– pins – 9.5 – G/A VCC VCCN ICC CLOAD RLOAD MCHALL – 1.7 – kΩ Primary Conductor Resistance RPRIMARY ANALOG OUTPUT SIGNAL CHARACTERISTICS Full Range Linearity3 ELIN Symmetry4 ESYM RF(INT) TA = 25°C – 1 – mΩ IP = ±IP0A IP = ±IP0A –0.75 99.1 ±0.25 100 0.75 100.9 % % Bidirectional Quiescent Output IP = 0 A, TA = 25°C – VCC×0.5 – V – 400 – µA /√(Hz) – 170 – mArms – 3 – μs – 1 – μs – 4 – μs – 120 – kHz – 35 – μs VCC × 0.25 – – ±1 VCC × 0.4 – V A Switchpoint in VOC safe operating area; assumes INCOMP = 0 A – ±5 – % ¯U¯¯L¯ ¯T¯ pin 1 mA sink current at ¯F¯ ¯A  – – 0.4 V VOUT(QBI) Noise Density IND Input-referenced noise density; TA = 25°C, CL = 4.7 nF Noise IN Input referenced noise at 120 kHz Bandwidth; TA = 25°C,CL = 4.7 nF TIMING PERFORMANCE CHARACTERISTICS VIOUT Signal Rise Time VIOUT Signal Propagation Time tr tPROP VIOUT Signal Response Time tRESPONSE VIOUT Large Signal Bandwidth f3dB Power-On Time tPO OVERCURRENT CHARACTERISTICS Setting Voltage for Overcurrent Switchpoint5 Signal Noise at Overcurrent Comparator Input VOC INCOMP Overcurrent Fault Switchpoint Error6,7 EOC ¯U¯¯L¯ ¯T¯ Pin Output Voltage Overcurrent ¯F¯ ¯A  V ¯F¯ ¯A  ¯U¯¯ L¯ ¯T¯  TA = 25°C, Swing IP from 0 A to IP0A, no capacitor on FILTER pin, 100 pF from VIOUT to GND TA = 25°C, no capacitor on FILTER pin, 100 pF from VIOUT to GND TA = 25°C, Swing IP from 0 A to IP0A, no capacitor on FILTER pin, 100 pF from VIOUT to GND –3 dB, Apply IP such that VIOUT = 1 Vpk-pk, no capacitor on FILTER pin, 100 pF from VIOUT to GND Output reaches 90% of steady-state level, no capacitor on FILTER pin, TA = 25°C Fault Enable (FAULT_EN Pin) Input Low Voltage Threshold VIL – – 0.1 × VCC V Fault Enable (FAULT_EN Pin) Input High Voltage Threshold VIH 0.8 × VCC – – V Fault Enable (FAULT_EN Pin) Input Resistance RFEI – 1 – MΩ Continued on the next page… Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 6 ACS710 120 kHz Bandwidth, High-Voltage Isolation Current Sensor with Integrated Overcurrent Detection COMMON OPERATING CHARACTERISTICS (continued): Valid at TA = –40°C to 125°C, VCC = 5 V, unless otherwise specified Characteristic Symbol OVERCURRENT CHARACTERISTICS (continued) Fault Enable (FAULT_EN Pin) Delay8 tFED Fault Enable (FAULT_EN Pin) Delay (Non-Latching versions)9 tFED(NL) Overcurrent Fault Response Time tOC Undercurrent Fault Response Time (Non-Latching versions) tUC Overcurrent Fault Reset Delay tOCR Overcurrent Fault Reset Hold Time tOCH Overcurrent Input Pin Resistance VOLTAGE REFERENCE CHARACTERISTICS ROC Voltage Reference Output VZCR Voltage Reference Output Load Current IZCR Voltage Reference Output Drift ∆VZCR Test Conditions Set FAULT_EN to low, VOC = 0.25 × VCC , COC = 0 F; then run a DC IP exceeding the corresponding overcurrent threshold; then reset FAULT_EN from low to high and measure the delay from the rising edge of ¯U¯¯L¯ ¯T¯  FAULT_EN to the falling edge of ¯F¯ ¯A  Set FAULT_EN to low, VOC = 0.25 × VCC , COC = 0 F; then run a DC IP exceeding the corresponding overcurrent threshold; then reset FAULT_EN from low to high and measure the delay from the rising edge of ¯U¯¯L¯ ¯T¯  FAULT_EN to the falling edge of ¯F¯ ¯A  FAULT_EN set to high for a minimum of 20 µs before the overcurrent event; switchpoint set at VOC = 0.25 × VCC ; delay from IP exceeding overcurrent fault threshold to V ¯F¯ ¯A  ¯U¯¯L¯ ¯T¯  0.8 × VCC , without external COC capacitor, RPU = 330 kΩ Time from VFAULTEN < VIL to V ¯F¯ ¯A  ¯U¯¯L¯ ¯T¯  > 0.8 × VCC , RPU = 330 kΩ Time from VFAULTEN