DMOS DRIVER FOR BIPOLAR STEPPER MOTOR
■ OPERATING SUPPLY VOLTAGE FROM 8 TO 52V
■ 2.8A OUTPUT PEAK CURRENT (1.4A RMS)
■ RDS(ON) 0.73Ω TYP. VALUE @ Tj = 25°C
■ OPERATING FREQUENCY UP TO 100KHz
■ NON DISSIPATIVE OVERCURRENT PROTECTION
■ DUAL INDEPENDENT CONSTANT tOFF PWM CURRENT CONTROLLERS
■ FAST/SLOW DECAY MODE SELECTION
■ FAST DECAY QUASI-SYNCHRONOUS RECTIFICATION
■ DECODING LOGIC FOR STEPPER MOTOR FULL AND HALF STEP DRIVE
■ CROSS CONDUCTION PROTECTION
■ THERMAL SHUTDOWN
■ UNDER VOLTAGE LOCKOUT
■ INTEGRATED FAST FREE WHEELING DIODES
TYPICAL APPLICATIONS
■ 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 combines isolated DMOS Power Transistors with CMOS and bipolar circuits on the same chip. The device includes 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 protection on the high side Power MOSFETs and thermal shutdown.
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
| Symbol |
Parameter |
Test conditions |
Value |
Unit |
| VS |
Supply Voltage |
VSA = VSB = VS |
60 |
V |
| VOD |
Differential Voltage between
VSA, OUT1A, OUT2A, SENSEA and VSB, OUT1B, OUT2B, SENSEB
|
VSA = VSB = VS = 60V;
VSENSEA = VSENSEB = GND
|
60 |
V |
| VBOOT |
Bootstrap Peak Voltage |
VSA = VSB = VS |
VS + 10 |
V |
| VIN,VEN |
Input and Enable Voltage Range |
|
-0.3 to +7 |
V |
|
VREFA,
VREFB
|
Voltage Range at pins VREFA and VREFB |
|
-0.3 to +7 |
V |
|
VRCA,
VRCB
|
Voltage Range at pins RCA and RCB |
|
-0.3 to +7 |
V |
|
VSENSEA,
VSENSEB
|
Voltage Range at pins SENSEA and SENSEB |
|
-1 to +4 |
V |
| IS(peak) |
Pulsed Supply Current (for each VS pin), internally limited by the overcurrent protection |
VSA = VSB = VS;
tPULSE < 1ms
|
3.55 |
A |
| IS |
RMS Supply Current (for each VS pin) |
VSA = VSB = VS |
1.4 |
A |
|
Tstg,
TOP
|
Storage and Operating Temperature Range |
|
-40 to 150 |
°C |
Product Tags:
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New & Original Dmos Driver For Bipolar Stepper Motor L6228D Images
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