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Bosch Semiconductors

CR760

Alternator regulator for 14V systems with C-Terminal interface

Application & Technical Summary

CR760

CR760 regulates the output voltage of a 14 V alternator to a constant value.

The regulator continuously senses the alternator’s output voltage, rpm, temperature, excitation current. It adjusts the excitation current to keep the output voltage on a constant level. Via PWM commands, the output voltage can be set to any desired value within the given range.

Product benefits

  • Fully integrated alternator regulator
  • Pulse–width modulated regulator
  • Load response function
  • Multiwatt8 package
  • Various customer programming options at end of line

11.7 – 15.3 V set voltage

set voltage adjustable via PWM interface

Technical Features

Type
Voltage regulator for 14V alternators
Package
MultiWatt8
Features

  • Wake-up from V or DF terminals if communication is missing
  • Power stage shutdown at extreme temperature
  • Short circuit protection / recovery on DF power stage
  • High-side DMOS regulated dynamo field (DF) by fixed
    frequency PWM
  • Integrated active freewheeling MOSFET on DF
  • DF duty cycle range up to 100 %
  • LR slow loads
  • LR Boost and fast loads
  • Active handling of over-voltage
  • Accepts jump start with 28 V
  • ESD robustness on all pins: ± 4 kV (HBM,
    1.5 kOhm, 100 pF to GND)

Communication features
C-Terminal acc. to Nissan specification
Operating voltage
6.5 – 18 V
Extended operating voltage
4 – 37 V
Set voltage or B+
11.7 – 15.3 V
Setting
PWM
Regulation
Digital
Freewheeling
Active
Load response
Yes
High temperature shut-off
Yes
ESD handling
HBM ± 4 kV
Field protection
Yes
Tj min [°C]
-40°C
Tj max [°C]
150°C

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