STMicroelectronics L6227
The L6227 device is a DMOS dual full bridge designed for motor control applications, realized in BCD technology, which combines isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. The device also includes two independent constant off time PWM current controllers that performs the chopping regulation. Available in PowerSO36 and SO24 (20 + 2 + 2) packages, the L6227 device features a non-dissipative overcurrent protection on the high-side power MOSFETs and thermal shutdown.APPLICATIONS
● Bipolar stepper motor● Dual DC motor
DESCRIPTION
FEATURES
● Operating supply voltage from 8 to 52 V● 2.8 A output peak current (1.4 A DC)
● RDS(ON) 0.73 typ. value at Tj = 25 °C
● Operating frequency up to 100 KHz
● Non-dissipative overcurrent protection
● Dual independent constant tOFF PWM current controllers
● Slow decay synchronous rectification
● Cross conduction protection October 2018 This is information on a product in full production. DocID9453 Rev 3 1/31 Contents Contents L6227 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 Circuit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .