BUS IC DC/DC CONVERTER MOTOR DRIVER IC RIPPLE COUNTER DRIVER IC I/O IC SENSOR IC SENSOR INTERFACE IC ÿ Position control Position control + driver Speed control Ripple detection ÿ Sensorless position control of DC-motors FEATURES E910.40 APPLICATION PINNING ÿ Supply voltage range VDD 9V to 16V ÿ Seat adjustment ÿ Full motor control and diagnosis ÿ Steering column adjustment ÿ Driving a four N-channel-power-MOSFET full bridge ÿ Fuel pump ÿ Pulse width modulation with 8bit resolution for high side drivers DESCRIPTION ÿ Drive frequency 23 kHz The IC enables a µC to track the position of a DC-motor by count- ÿ Reduced current peaks during motor start ing its current ripples. The ripple signal is available on an output and acceleration pin to connect controllers or dedicated logic. With the bidirec- ÿ Active motor braking tional interface the actual position can be read out and IC param- ÿ Motor position determined by sensing motor eters can be changed. Main parameters are motor direction and current fluctuations PWM to control high side drivers. The IC can be adapted to differ- ÿ Shortcircuit and overvoltage protected outputs ent motor characteristics by changing the RC-filter on ODIF, IDIF, ÿ One pin microprocessor interface with OLP and the voltage divider on BRTH. automatic baud rate recognition ÿ Motor turned off automatically 200 ms after the last valid transmission ÿ Low standby current (typ. < 200 µA) ÿ – 40°C to + 125°C operating temperature ÿ SO20w package BLOCK DIAGRAM PACKAGE Pin Name Description 1 GND Ground GND 1 20 2 VGH1 Gate voltage for high side driver 1 VGH1 2 19 3 VGH2 Gate voltage for high side driver 2 VGH2 3 18 4 VGL1 Gate voltage for low side driver 1 5 VGL2 Gate voltage for low side driver 2 6 VDD Input supply voltage 7 BSI Input bootstrap voltage 8 SENSE1 Voltage sense bridge 1 9 SENSE2 Voltage sense bridge 2 10 RSR External resistor to adjust slew rate 11 OLP Output low pass filter 12 IDIF Inverting input differential amplifier 13 ODIF Output differential amplifier 14 VSA Internal 9V analog supply 15 RB External bias resistor 16 VREF Internal 5V supply voltage 17 BRTH Input breake threshold 18 TEMP Input temperature monitor 19 IMP OUT Incremental output for counting pulses, open drain 20 DATA I/O Serial data I/O VGL1 4 17 VGL2 5 16 VDD 6 15 BSI 7 14 SENSE1 8 13 SENSE2 9 12 10 11 RSR DATA I/O IMP OUT TEMP BRTH VREF RB VSA ODIF IDIF OLP VBAT VCC VDD RB VGH 1 BIAS VGH 2 VDD Reg VSA AVDD VREF µC BSI slewrate controlled VREF M Short Circuit Detect DATA IMPOUT Incr. Detect VREF 46 RSR FET Driver Control TEMP BRTH VGL 1 VGL 2 SENSE 1 SENSE 2 Filter & Amplifier S/H ODIF IDIF OLP Note ELMOS Semiconductor AG (below ELMOS) reserves the right to make changes to the product contained in this publication without notice. ELMOS assumes no responsibility for the use of any circuits described herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. While the information in this publication has been checked, no responsibility, however, is assumed for inaccuracies. ELMOS does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of a life-support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications. Copyright © 2005 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited. www.elmos.de | [email protected] elmos product catalog june 2005 47