ACPL-C87AT/ACPL-C87BT Automotive High Precision DC Voltage Isolation Sensor Data Sheet Lead (Pb) Free RoHS 6 fully compliant RoHS 6 fully compliant options available -xxxE denotes a lead-free product Description Features The ACPL-C87AT/C87BT isolation sensors utilize superior Unity Gain optical coupling technology, with sigma-delta (S-D) +/-0.5% (ACPL-C87BT) and +/-1% (ACPL-C87AT) Gain analog-to-digital converter, chopper stabilized amplifiers, Tolerance 25 C and a fully differential circuit topology to provide -0.3 mV Input Oset ff Voltage unequaled isolation-mode noise rejection, low offset, high gain accuracy and stability. 0.05% Non Linearity 25 ppm/C Gain Drift vs. Temperature ACPL-C87AT (1% gain tolerance) and ACPL-C87BT (0.5% gain tolerance) are designed for high precision 100 kHz Bandwidth DC voltage sensing in electronic motor drives, DC/DC 0 to 2 V Nominal Input Range and AC/DC converter and battery monitoring system. The Qualified to AEC-Q100 Grade 1 Test Guidelines ACPL-C87AT/C87BT features high input impedance and operate with full span of analog input voltage up to 2.46 V. Operating Temperature: -40 C to +125 C The shutdown feature provides power saving and can be Shutdown Feature (Active High) controlled from external source, such as microprocessor. 15 kV/ms Common-Mode Rejection at V = 1 kV CM The high common-mode transient immunity (15 kV/ ms) Working Voltage, V = 1414 V IORM peak of the ACPL-C87AT/C87BT maintains the precision and stability needed to accurately monitor DC rail voltage in Compact, Surface Mount Stretched SO8 Package high noise motor control environments. This galvanic safe Worldwide Safety Approval: isolation solution is delivered in a compact, surface mount UL 1577 (5000 V / 1 min.) RMS stretched SO-8 (SSO-8) package that meets worldwide regulatory safety standards. CSA 2 IEC/EN/DIN EN 60747-5-5 Avago R Coupler isolation products provide the rein- forced insulation and reliability needed for critical auto- Applications motive and high temperature industrial applications. Automotive BMS Battery Pack Voltage Sensing Functional Diagram Automotive DC/DC Converter Voltage Sensing V V DD1 DD2 Automotive Motor Inverter DC Bus Voltage Sensing 8 1 Automotive AC/DC (Charger) DC Output Voltage Sensing 2 7 V V IN OUT+ Isolation Interface for Temperature Sensing 0.1 F 0.1 F 3 6 SHDN V OUT- General Purpose Voltage Sensing and Monitoring 5 4 GND1 SHIELD GND2 Figure 1. Functional Diagram 0.1 mF bypass capacitor must be connected between pin 1 and pin 4, and pin 5 and pin 8 as shown. CAUTION: It is advised that normal static precautions be taken in handling and assembly of this component to prevent damage and/or degradation which may be induced by ESD. Functional Diagram (Cont.) V V DD1 DD2 V IN V = V V OUT OUT+ OUT- V 0 2 V V OUT+ IN 0 2 V V OUT- SHDN Isolation GND1 GND2 Figure 2. Functional Diagram 2 5 V 15 V V+ MEV1S1505DC 5 V IN OUT Gate Driver 1 nF R1 M 0.1 F 20 k 39 Gate 0.1 F R4 20 k Driver V R5 20 k OUT R2 10 nF V- 1 nF 20 k ACPL-C87AT/BT Figure 3. Typical Voltage Sensing Circuit 1 VDD1 VDD2 8 VIN V 2 OUT+ 7 SHDN 3 V 6 OUT- GND2 4 GND1 5 Figure 4. Package Pinout Pin Description Pin No. Pin Name Description Pin No. Pin Name Description 1 V Input power supply 8 V Output power supply DD1 DD2 When V = 0, then V = 0 V, V = 2.6 V DD1 OUT+ OUT- 2 V Voltage input, Full scale Range = 2.46 V 7 V Positive output voltage IN OUT+ 3 SHDN Shutdown (Active High) 6 V Negative output voltage OUT- When active, then V = 0 V, V = 2.6 V OUT+ OUT- 4 GND1 Input Side Ground 5 GND2 Output Side Ground 2