Icon--AD-black-48x48Icon--address-consumer-data-black-48x48Icon--appointment-black-48x48Icon--back-left-black-48x48Icon--calendar-black-48x48Icon--Checkbox-checkIcon--clock-black-48x48Icon--close-black-48x48Icon--compare-black-48x48Icon--confirmation-black-48x48Icon--dealer-details-black-48x48Icon--delete-black-48x48Icon--delivery-black-48x48Icon--down-black-48x48Icon--download-black-48x48Ic-OverlayAlertIcon--externallink-black-48x48Icon-Filledforward-right_adjustedIcon--grid-view-black-48x48Icon--info-i-black-48x48Icon--Less-minimize-black-48x48Icon-FilledIcon--List-Check-blackIcon--List-Cross-blackIcon--list-view-mobile-black-48x48Icon--list-view-black-48x48Icon--More-Maximize-black-48x48Icon--my-product-black-48x48Icon--newsletter-black-48x48Icon--payment-black-48x48Icon--print-black-48x48Icon--promotion-black-48x48Icon--registration-black-48x48Icon--Reset-black-48x48share-circle1Icon--share-black-48x48Icon--shopping-cart-black-48x48Icon--start-play-black-48x48Icon--store-locator-black-48x48Ic-OverlayAlertIcon--summary-black-48x48tumblrIcon-FilledvineIc-OverlayAlertwhishlist
Bosch Semiconductors

CR250

Alternator regulator for 28V systems

Application & Technical Summary

CR250

CR250 regulates the output voltage of a 28 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 LIN commands, the output voltage can be set to any desired value within the given range.

Product benefits

  • Fully integrated alternator regulator
  • LIN single wire interface
  • Load response function
  • Compliant to VDA LIN alternator regulator specification
  • Various customer programming options at end of line

22.0 – 31.0 V set voltage

output voltage stabilized to constant value

Technical Features

Type
Voltage regulator for 28V alternators
Package
MultiWatt8
Robustness of operation
Wake-up from V terminal if communication is missing
Functions to protect alternator and battery

  • Default operation if COM pin is disconnected or shorted to B+
    or GND
  • Power stage shutdown at extreme temperature
  • Short circuit protection / recovery on DF power stage and on COM

Features

  • 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 Boost and fast loads
  • Active handling of over-voltage

Communication features
LIN2.1 physical interface (12 V and 24 V)
LIN2.1 and LIN1.3 compatible data link layer
Operating voltage
13 – 36 V
Extended operating voltage
8 – 54 V

Set voltage bzw. B+
22.0 – 31.0 V

Setting
LIN

Regulation
Digital
Freewheeling
Active
Load response
Yes
High temperature shut-off
Yes
ESD handling
all pins: ±8 kV (HBM, 1.5 kOhm, 100 pF to GND)
Field protection
Yes
Tj min [°C]
-40°C
Tj max [°C]
175°C

Share this on:

Get in touch with us

Conact