A charger and DC/DC step-up system controls the AC input from the household power supply and boosts the voltage to that required by the battery using a DC/DC circuit. The MCU performs both Power Factor Correction (PFC) control and control of the DC/DC step-up circuit. In addition to battery cell monitor MCUs, Renesas supplies analog and power devices suitable for battery charger and DC/DC control systems.

Image
ブロック図
Image
ブロック図
Image
ブロック図

*1PMIC: Power Management IC
*2PFC: Power Factor Correction

Microcontrollers

  Recommended
Product
ROM
[Bytes]
RAM
[Bytes]
Operating
Frequency
[MHz]
Package
[Pin Count]
Features
Battery Charger-DC/DC
Control System
Main 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出力, 12-bit ADC, CAN
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
IGBT driver R2A25110KSP With insulating function (micro-isolator), isolation voltage: 2.5KVrms, excessive current protection function, mirror clamp function, soft turnoff function, etc.
LiBCM-IC ISL78714 14-cell battery monitor IC, cell voltage measurement accuracy ±2mV
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