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STMicroelectronics Electronic Components Datasheet

L6228PD Datasheet

DMOS DRIVER FOR BIPOLAR STEPPER MOTOR

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L6228PD pdf
L6228
DMOS DRIVER FOR BIPOLAR STEPPER MOTOR
s OPERATING SUPPLY VOLTAGE FROM 8 TO 52V
s 2.8A OUTPUT PEAK CURRENT (1.4A RMS)
s RDS(ON) 0.73TYP. VALUE @ Tj = 25°C
s OPERATING FREQUENCY UP TO 100KHz
s NON DISSIPATIVE OVERCURRENT
PROTECTION
s DUAL INDEPENDENT CONSTANT tOFF PWM
CURRENT CONTROLLERS
s FAST/SLOW DECAY MODE SELECTION
s FAST DECAY QUASI-SYNCHRONOUS
RECTIFICATION
s DECODING LOGIC FOR STEPPER MOTOR
FULL AND HALF STEP DRIVE
s CROSS CONDUCTION PROTECTION
s THERMAL SHUTDOWN
s UNDER VOLTAGE LOCKOUT
s INTEGRATED FAST FREE WHEELING DIODES
TYPICAL APPLICATIONS
s BIPOLAR STEPPER MOTOR
DESCRIPTION
The L6228 is a DMOS Fully Integrated Stepper Motor
Driver with non-dissipative Overcurrent Protection,
realized in MultiPower-BCD technology, which com-
BLOCK DIAGRAM
PowerDIP24
(20+2+2)
PowerSO36
SO24
(20+2+2)
ORDERING NUMBERS:
L6228N (PowerDIP24)
L6228PD (PowerSO36)
L6228D (SO24)
bines isolated DMOS Power Transistors with CMOS
and bipolar circuits on the same chip. The device in-
cludes all the circuitry needed to drive a two-phase
bipolar stepper motor including: a dual DMOS Full
Bridge, the constant off time PWM Current Controller
that performs the chopping regulation and the Phase
Sequence Generator, that generates the stepping
sequence. Available in PowerDIP24 (20+2+2),
PowerSO36 and SO24 (20+2+2) packages, the
L6228 features a non-dissipative overcurrent protec-
tion on the high side Power MOSFETs and thermal
shutdown.
VBOOT
VCP
EN
CONTROL
VBOOT
CHARGE
PUMP
THERMAL
PROTECTION
OCDA
OCDB
OVER
CURRENT
DETECTION
GATE
LOGIC
VBOOT
10V
VBOOT
10V
VSA
OUT1A
OUT2A
SENSEA
HALF/FULL
CLOCK
RESET
CW/CCW
STEPPING
SEQUENCE
GENERATION
VOLTAGE
REGULATOR
10V 5V
ONE SHOT
MONOSTABLE
OVER
CURRENT
DETECTION
GATE
LOGIC
PWM
MASKING
TIME
+
SENSE
-
COMPARATOR
BRIDGE A
BRIDGE B
VREFA
RCA
VSB
OUT1B
OUT2B
SENSEB
VREFB
RCB
D01IN1225
September 2003
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
1/26


STMicroelectronics Electronic Components Datasheet

L6228PD Datasheet

DMOS DRIVER FOR BIPOLAR STEPPER MOTOR

No Preview Available !

L6228PD pdf
L6228
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Test conditions
VS Supply Voltage
VSA = VSB = VS
VOD
VBOOT
VIN,VEN
VREFA,
VREFB
Differential Voltage between
VSA = VSB = VS = 60V;
VSA, OUT1A, OUT2A, SENSEA and VSENSEA = VSENSEB = GND
VSB, OUT1B, OUT2B, SENSEB
Bootstrap Peak Voltage
VSA = VSB = VS
Input and Enable Voltage Range
Voltage Range at pins VREFA
and VREFB
VRCA, VRCB Voltage Range at pins RCA and
RCB
VSENSEA, Voltage Range at pins SENSEA
VSENSEB and SENSEB
IS(peak)
Pulsed Supply Current (for each VSA = VSB = VS;
VS pin), internally limited by the tPULSE < 1ms
overcurrent protection
IS
Tstg, TOP
RMS Supply Current (for each
VS pin)
Storage and Operating
Temperature Range
VSA = VSB = VS
Value
60
60
VS + 10
-0.3 to +7
-0.3 to +7
-0.3 to +7
-1 to +4
3.55
1.4
-40 to 150
Unit
V
V
V
V
V
V
V
A
A
°C
RECOMMENDED OPERATING CONDITIONS
Symbol
VS
VOD
VREFA,
VREFB
VSENSEA,
VSENSEB
IOUT
Tj
fsw
Parameter
Test Conditions
Supply Voltage
VSA = VSB = VS
Differential Voltage Between
VSA = VSB = VS;
VSA, OUT1A, OUT2A, SENSEA and VSENSEA = VSENSEB
VSB, OUT1B, OUT2B, SENSEB
Voltage Range at pins VREFA
and VREFB
Voltage Range at pins SENSEA (pulsed tW < trr)
and SENSEB
(DC)
RMS Output Current
Operating Junction Temperature
Switching Frequency
MIN
MAX
Unit
8 52 V
52 V
-0.1 5 V
-6 6 V
-1 1 V
1.4 A
-25
+125
°C
100 KHz
2/26


Part Number L6228PD
Description DMOS DRIVER FOR BIPOLAR STEPPER MOTOR
Maker STMicroelectronics
Total Page 26 Pages
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