A battery control system is used for managing remaining battery voltage and control of battery charging. The voltages of the individual cells are monitored and the balance controlled by a battery cell monitor MCU and lithium-ion battery cell monitor ICs. Battery management MCUs provided by Renesas can perform management of remaining battery voltage and battery charge control. In addition to battery cell monitor MCUs, Renesas supplies analog and power devices suitable for battery control systems.

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*BMIC: Battery Management IC

Related Products

Microcontrollers

  Recommended
Product
ROM
(Bytes)
RAM
(Bytes)
Operating
Frequency
(MHz)
Package
(Pin Count)
Features
Battery Control System
Battery Management MCU
RH850/U2A16 - - - - -
RH850/P1x 512K-2M 64K-128K

160
(Lock Step)

100-144 ECC, BIST, ECM, TSG3, CAN, 12-bit ADC, ICU-S
RH850/F1H

3072-6144

320-576

2x120

176-272

CAN 7ch, LIN, FlexRay, Ethernet, ICU *1

RH850/F1L

256-2048

32-192

96

48-176

CAN 6ch, LIN, ICU *1

RH850/F1K 768-2048 96-192 120 100-176 CAN/CAN FD 6ch, LIN, ICU *1
RH850/F1KM-S1 512-1024 64-128 120 48-100 CAN/CAN FD 6ch, LIN, ICU *1
RH850/F1KM-S4 3072-4096 384-512 240 100-272 CAN/CAN FD 8ch, LIN, FlexRay, Ethernet, ICU *1
RH850/F1KH-D8 6144-8192 896 2x240 176-324 CAN/CAN FD 12ch, LIN, FlexRay 2ch, Ethernet 2ch, ICU *1
SH72A0, SH72A2 256K-512K 32K-64K 80-100 64-100 32K Data Flash, PWM output, 12-bit ADC, CAN
Battery Control System
Cell Monitor MCU
RL78/F13 16K-128K 1K-8K 24-32 20-80 4K Data Flash, Motor Control Timer, CAN, LIN, 10-bit ADC 20ch, LVD*2, 150 °C
RL78/F14 48K-256K 4K-20K 24-32 30-100 8K-Data Flash, Motor Control Timer, CAN, LIN, 10-bit ADC 31ch, 8-bit DAC, Comparator, LVD*2, 150 °C
RL78/F15 128K-512K 10K-32K 32 48-144 Motor Control Timer (Timer RD), CAN 2ch, LIN 3ch, IEBus, ADC, DAC, comparator, 8/16KB Data Flash 8KB/16KB

* 1 ICU: Intelligent Cryptographic Unit
* 2 LVD: Low Voltage Detection

Analog/Power Devices

Analog/
Power Device
Recommended
Product
Features
IPD uPD166023T1J 42V/12mΩ, 12-pin power HSSOP, single channel, high-side IPD, protection function, proportional load current sensing
uPD166027T1J 42V/35mΩ, 12-pin power HSSOP, dual channel, high-side IPD, protection function, proportional load current sensing
LiBCM-IC ISL78714 Monitors and manages up to 14 cell voltages with ±2mV measurement accuracy, fully differential cell input range of ±5V accommodates bus bar measurement requirements, high diagnostic coverage for cell voltage and temperature measurements
Power Management IC RAA270000KFT Ideal power solution for the RH850/E1x/C1x. Integrated fault diagnosis and monitor functions
RAA270005KFP Ideal power solution for the RH850/P1x (with built in voltage regulator for the MCU’s core). Integrated fault diagnosis and monitor functions. Supports cranking operation
Op-Amp READ2351JSP Full range input/output, low power consumption
READ2352JSP Full range input/output, high slew rate
UPC1251/UPC451 Low power consumption
UPC842/UPC844 High slew rate
Comparator UPC277/UPC177 Low power consumption