L6227 Datasheet, PDF (1/22 Pages) STMicroelectronics – DMOS DUAL FULL BRIDGE DRIVER WITH PWM CURRENT CONTROLLER

L6227
DMOS DUAL FULL BRIDGE DRIVER
WITH PWM CURRENT CONTROLLER
s OPERATING SUPPLY VOLTAGE FROM 8 TO 52V
s 2.8A OUTPUT PEAK CURRENT (1.4A DC)
s R_DS(ON) 0.73Ω TYP. VALUE @ T_j = 25 °C
s OPERATING FREQUENCY UP TO 100KHz
s NON DISSIPATIVE OVERCURRENT
PROTECTION
s DUAL INDEPENDENT CONSTANT t_OFF PWM
CURRENT CONTROLLERS
s SLOW DECAY SYNCHRONOUS
RECTIFICATION
s CROSS CONDUCTION PROTECTION
s THERMAL SHUTDOWN
s UNDER VOLTAGE LOCKOUT
s INTEGRATED FAST FREE WHEELING DIODES
TYPICAL APPLICATIONS
s BIPOLAR STEPPER MOTOR
s DUAL DC MOTOR
DESCRIPTION
The L6227 is a DMOS Dual Full Bridge designed for
motor control applications, realized in MultiPower-
BLOCK DIAGRAM
PowerDIP24
(20+2+2)
PowerSO36
SO24
(20+2+2)
ORDERING NUMBERS:
L6227N (PowerDIP24)
L6227PD (PowerSO36)
L6227D (SO24)
BCD technology, which combines isolated DMOS
Power Transistors with CMOS and bipolar circuits on
the same chip. The device also includes two inde-
pendent constant off time PWM Current Controllers
that performs the chopping regulation. Available in
PowerDIP24 (20+2+2), PowerSO36 and SO24
(20+2+2) packages, the L6227 features a non-dissi-
pative overcurrent protection on the high side Power
MOSFETs and thermal shutdown.
VBOOT
VCP
V_BOOT
CHARGE
PUMP
OCD_A
EN_A
IN1_A
IN2_A
THERMAL
PROTECTION
VOLTAGE
REGULATOR
10V 5V
EN_B
IN1_B
IN2_B
September 2003
OCD_B
V_BOOT
V_BOOT
VS_A
OVER
CURRENT
DETECTION
10V
GATE
LOGIC
ONE SHOT
MONOSTABLE
OVER
CURRENT
DETECTION
GATE
LOGIC
10V
PWM
MASKING
TIME
+
SENSE
-
COMPARATOR
BRIDGE A
BRIDGE B
D99IN1085A
OUT1_A
OUT2_A
SENSE_A
VREF_A
RC_A
VS_B
OUT1_B
OUT2_B
SENSE_B
VREF_B
RC_B
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