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L634

ST Microelectronics
Part Number L634
Manufacturer ST Microelectronics
Description THREE PHASE MOTOR DRIVER
Published Dec 22, 2006
Detailed Description www.DataSheet4U.com ® L6234 THREE PHASE MOTOR DRIVER SUPPLY VOLTAGE FROM 7 TO 52V 5A PEAK CURRENT RDS ON 0.3Ω TYP. VA...
Datasheet PDF File L634 PDF File

L634
L634

Overview
www.
DataSheet4U.
com ® L6234 THREE PHASE MOTOR DRIVER SUPPLY VOLTAGE FROM 7 TO 52V 5A PEAK CURRENT RDS ON 0.
3Ω TYP.
VALUE AT 25°C CROSS CONDUCTION PROTECTION TTL COMPATIBLE DRIVER OPERATING FREQUENCY TO 50KHz THERMAL SHUTDOWN INTRINSIC FAST FREE WHEELING DIODES INPUT AND ENABLE FUNCTION FOR EVERY HALF BRIDGE 10V EXTERNAL REFERENCE AVAILABLE DESCRIPTION The L6234 is a triple half bridge to drive a brushless motor.
It is realized in Multipower BCD technology which combines isolated DMOS power transistors with CMOS and Bipolar circuits on the same chip.
By using mixed technology it has been possible to optimize the logic circuitry and the power stage to achieve the best possible performance.
The output DMOS transistors can sustain a very high current due to the fact that the DMOS structure is not affected by the second breakdown efPIN CONNECTION (Top view) POWER DIP (16+2+2) PowerSO20 ORDERING NUMBERS: L6234 (POWER DIP 16+2+2) L6234PD (PowerSO20) fect, the RMS maximum current is practically limited by the dissipation capability of the package.
All the logic inputs are TTL, CMOS and µP compatible.
Each channel is controlled by two separate logic input.
L6234 is available in 20 pin POWER DIP package (16+2+2) and in PowerSO20.
OUT1 IN1 EN1 VS GND GND VS EN3 IN3 OUT3 1 2 3 4 5 6 7 8 9 10 D98IN848 20 19 18 17 16 15 14 13 12 11 OUT2 IN2 EN2 SENSE1 GND GND SENSE2 VBOOT VCP VREF GND SENSE1 EN2 IN2 OUT2 OUT1 IN1 EN1 VS GND 1 2 3 4 5 6 7 8 9 10 D94IN129A 20 19 18 17 16 15 14 13 12 11 GND SENSE2 VBOOT Vcp VREF OUT3 IN3 EN3 VS GND POWER DIP (16+2+2) PowerSO20 August 2003 1/10 L6234 BLOCK DIAGRAM 0.
22µF 10nF VCP CHARGE PUMP IN1 1µF VREF VBOOT VREF= 10V Vs 7 to 52V TH1 OUT1 EN1 TL1 0.
1 µF 100µF 1N4148 IN2 TH2 OUT2 EN2 THERMAL PROTECTION IN3 TL2 SENSE1 TH3 OUT3 EN3 TL3 SENSE2 GND D95IN309A RSENSE 2/10 L6234 THERMAL DATA Symbol Rth j-pin Rth j-amb1 Rth j-amb2 Rth j-case Parameter Thermal Resistance, Junction to Pin Thermal Resistance, Junction to Ambien...


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