描述 Description

The L6208 device is a DMOS fully integrated stepper motor driver with non-dissipative overcurrent protection, realized in 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 L6208 device features a non-dissipative overcurrent protection on the high-side Power MOSFETs and thermal shutdown.

特性 Features

? Operating supply voltage from 8 to 52 V
? 5.6 A output peak current (2.8 A RMS)
? RDS(ON) 0.3 Ω typ. value at Tj= 25 °C
? Operating frequency up to 100 KHz
? Non-dissipative overcurrent protection
? Dual independent constant tOFFPWM 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
? Undervoltage lockout
? Integrated fast freewheeling diodes

簡介

L6208屬于集成電路（IC）的電機驅(qū)動器控制器。由制造生產(chǎn)的L6208電機驅(qū)動器，控制器產(chǎn)品屬于電機驅(qū)動器和控制器電源管理集成電路 (PMIC) 系列，可用于控制或操作從某電源施加到電機或相關(guān)機電執(zhí)行器的電源。所實現(xiàn)的具體功能和特性集根據(jù)預(yù)期負載和預(yù)期應(yīng)用的特性有很大差異，范圍從用于有刷電機的簡單開環(huán)速度控制到基于步進電機的高級閉環(huán)運動控制。