L6227N STMicroelectronics

L6227 DMOS dual full bridge driver with PWM current controller Datasheet - production data Thermal shutdown Undervoltage lockout Integrated fast freewheeling diodes Applications Bipolar stepper motor Dual DC motor 3 2 RZHU6 Description 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 62 (20 + 2 + 2) packages, the L6227 device features a non-dissipative overcurrent protection on the high-side power MOSFETs and thermal shutdown. V PEHU J QX HULQ 2UG ,3 ZHU / 1 3R 62 RZHU / 3 3 / 62 Features Operating supply voltage from 8 to 52 V 2.8 A output peak current (1.4 A DC) R 0.73 typ. value at T = 25 C DS(ON) j Operating frequency up to 100 KHz Non-dissipative overcurrent protection Dual independent constant t PWM current OFF controllers Slow decay synchronous rectification Cross conduction protection October 2018 DocID9453 Rev 3 1/31 This is information on a product in full production. www.st.comContents L6227 Contents 1 Block diagram 3 2 Maximum ratings 4 3 Pin connections . 6 4 Electrical characteristics . 8 5 Circuit description 11 5.1 Power stages and charge pump .11 5.2 Logic inputs 11 6 PWM current control 14 7 Slow decay mode 18 7.1 Non-dissipative overcurrent protection . 18 7.2 Thermal protection 21 8 Application information . 22 8.1 Output current capability and IC power dissipation . 24 8.2 Thermal management . 25 9 Package information 27 9.1 PowerSO36 package information . 27 9.2 SO24 package information 29 10 Revision history . 30 2/31 DocID9453 Rev 3