L6227Q datasheet(1/27 Pages) STMICROELECTRONICS

部件名	L6227Q

功能描述	DMOS dual full bridge driver with PWM current controller

PDF	27 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

1 / 27 page

June 2008

Rev 2

1/27

27

L6227Q

DMOS dual full bridge driver

with PWM current controller

Features

■ Operating supply voltage from 8 to 52 V

■ 2.8 A output peak current (1.4 A DC)

■ RDS(on) 0.73 Ω typ. value @ 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

■ Thermal shutdown

■ Under voltage lockout

■ Integrated fast free wheeling diodes

Applications

■ Bipolar stepper motor

■ Dual or quad DC motor

Description

The L6227Q is a DMOS dual full bridge designed

for motor control applications, realized in

BCDmultipower 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 VQFPN32 5 mm x 5 mm

package, the L6227Q features a non-dissipative

overcurrent protection on the high side power

MOSFETs and thermal shutdown.

VFQFPN32 5 mm x 5 mm

www.st.com

Figure 1.

Block diagram

D99IN1085A

GATE

LOGIC

OCDA

OCDB

OVER

CURRENT

DETECTION

OVER

CURRENT

DETECTION

GATE

LOGIC

VCP

VBOOT

ENA

IN1A

IN2A

ENB

IN1B

IN2B

VREFA

VBOOT

5V

10V

VSA

V

SB

OUT1A

OUT2A

OUT1B

OUT2B

SENSEA

CHARGE

PUMP

VOLTAGE

REGULATOR

ONE SHOT

MONOSTABLE

MASKING

TIME

THERMAL

PROTECTION

VBOOT

10V

BRIDGE A

SENSE

COMPARATOR

BRIDGE B

RCA

+

-

SENSEB

VREFB

RCB

PWM

类似零件编号 - L6227Q

制造商	部件名	数据表	功能描述
STMicroelectronics	L6227Q	389Kb / 27P	DMOS dual full bridge driver with PWM current controller 28-Jan-2009
STMicroelectronics	L6227Q	389Kb / 27P	DMOS dual full bridge driver with PWM current controller 28-Jan-2009

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类似说明 - L6227Q

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STMicroelectronics	L6207	387Kb / 23P	DMOS DUAL FULL BRIDGE DRIVER WITH PWM CURRENT CONTROLLER Sep-2003
STMicroelectronics	L6227	380Kb / 22P	DMOS DUAL FULL BRIDGE DRIVER WITH PWM CURRENT CONTROLLER Sep-2003
Allegro MicroSystems	3965	186Kb / 7P	DMOS DUAL FULL-BRIDGE PWM MOTOR DRIVER 12/4/2002
Allegro MicroSystems	3974	617Kb / 12P	DMOS DUAL FULL-BRIDGE PWM MOTOR DRIVER
STMicroelectronics	L6227Q	389Kb / 27P	DMOS dual full bridge driver with PWM current controller 28-Jan-2009
Allegro MicroSystems	A4954	248Kb / 9P	Dual Full-Bridge DMOS PWM Motor Driver
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Allegro MicroSystems	A4954	247Kb / 9P	Dual Full-Bridge DMOS PWM Motor Driver
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