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Bosch Semiconductors

CG270

10 channel current regulator for magnetic valves

CG270

CG270 is an integrated 10-channel current control pre-driver IC for advanced transmission control units.

Each channel comprises a digital regulator and a shunt resistor, to be connected to an external free-wheeling circuit and power switch.

Channels can be configured via SPI for direct PWM or constant current mode.

Product benefits

  • Precise digital control loop for up to 10 solenoid valves in a transmission control system
  • High accuracy current measurement
  • Temperature and aging compensation
  • Supports several external MOSFET configurations
  • Low-loss shunts for efficient current sensing
  • Constant current or direct PWM control
  • Designed to build ASIL D systems

3000 mA

current measurement range

Technical Features

Type
Current regulator
Package
TQFP128_ePad
Features

  • 10 Individual pre-drivers for external MOSFETs
  • Dither function with settings for amplitude, period, shape
  • Reset pin disables all channels and sets device to default state
  • ADC range 3A for current regulation, extended 4A range for diagnosis
  • High speed battery voltage ADC
    Diagnosis in active and idle modes

Outputs

  • 10 × regulated PWM signal for external power switches

Control Interface

  • 1 × SPI

VDD typ. [V]
14
Tj min [°C]
-40°C
Tj max [°C]
150°C

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