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Bosch Semiconductors

CG208

Two-channel magnetic valve current regulator for automatic transmission control

Application & Technical Summary

CG208

CG208 permits fast and precise control on two hydraulic valves to enable quick and smooth gear shifting.

CG240 simplifies the design of transmission control units. Hardware control loops for each valve significantly reduce the need for high microcontroller calculation power.

Product benefits

  • Integrated low-side drivers and shunts
  • Hardware solution, no μC necessary for regulation
  • Higher channel count in combination with an additional CG208 (two channels) or CG240 (six channels)

Built-in precision

high accuracy over temperature and lifetime

Technical Features

Type
Dual-channel fully integrated current regulator for inductive loads in low-side application
Package

  • TQFP44ePad
  • Bare-die

Features

  • Power Switch, shunt and free wheeling diode integrated
  • current regulation range: 0 – 1200 mA
  • Accuracy <1 %
  • Dither function
  • Overcurrent protection
  • Overtemperature protection
  • SPI controlled regulation loop characteristics

Outputs
2 x regulated load current
Control interface
1 x SPI (3.3V or 5V)
Supply voltages
3.3V, 5V, 9V, Ubat
VDD typ. [V]
5
Tj min [°C]
-40°C
Tj max [°C]
150°C

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