MC33771CTA1AE NXP

PB MC33771C Battery cell controller IC Rev. 1.0 20 January 2020 Product brief 1 General description The MC33771C is a SMARTMOS lithium-ion battery cell controller IC designed for automotive applications, such as hybrid electric (HEV) and electric vehicles (EV) along with industrial applications, such as energy storage systems (ESS) and uninterruptible power supply (UPS) systems. The device performs ADC conversions of the differential cell voltages and current, as well as battery coulomb counting and battery temperature measurements. The information is transmitted to MCU using one of the microcontroller interfaces (Serial Peripheral Interface (SPI) or Transformer physical layer (TPL)) of the IC. 2 Features 9.6 V V 61.6 V operation, 75 V transient PWR 7 to 14 cells management Isolated 2.0 Mbps differential communication or 4.0 Mbps SPI Addressable on initialization Bi-directional transceiver to support up to 63 nodes in daisy chain 0.8 mV maximum total voltage measurement error Synchronized cell voltage/current measurement with coulomb count Averaging of cell voltage measurements Total stack voltage measurement Seven GPIO/temperature sensor inputs 5.0 V at 5.0 mA reference supply output Automatic over/undervoltage and temperature detection routable to fault pin Integrated sleep mode over/undervoltage and temperature monitoring Onboard 300 mA passive cell balancing with diagnostics Hot plug capable Detection of internal and external faults, as open lines, shorts, and leakages Designed to support ISO 26262, up to ASIL D safety system. Qualified in compliance with AECQ-100NXP Semiconductors PB MC33771C Battery cell controller IC 3 Simplified application diagram RDTX OUT+ VCOM RDTX OUT- VPWR1 VCOM VPWR2 CT14 CGND battery reference CB14 VANA AGND CB14:13 C battery DGND reference CT13 FAULT CTn SDA 14 cell EEPROM voltage CBn SCL (OPTIONAL) measure SPI COM EN VCOM CT1 FAULT GPIOy MC33771C MCU CB2:1 C RESET GPIOx CSB CSB CB1 SO MISO CTREF SI/RDTX IN+ MOSI SCLK/RDTX IN- SCLK battery reference GNDREF VCOM GNDFLG GPIO0 GPIO1 ISENSE+ GPIO2 GPIO3 current GPIO4 measure ISENSE- GPIO5 GPIO6 battery reference Figure 1.Simplified application diagram, SPI use case PB MC33771C All information provided in this document is subject to legal disclaimers. NXP B.V. 2020. All rights reserved. Product brief Rev. 1.0 20 January 2020 2 / 30