Active Member
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[China]
Address: Room 36B1-B2, Building C, Electronics Science & Technology Building Shennan Mid-Road, Shenzhen China
Contact name:Sharon Yang
Anterwell Technology Ltd. |
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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 |
