L6227D 데이터 시트보기 (PDF) - STMicroelectronics

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L6227D

DMOS DUAL FULL BRIDGE DRIVER WITH PWM CURRENT CONTROLLER

STMicroelectronics 

L6227

PIN DESCRIPTION

PACKAGE

SO24/

PowerDIP24

PowerSO36

PIN #

PIN #

1

10

2

11

3

12

4

13

5

6, 7,

18, 19

8

9

15

1, 18,

19, 36

22

24

10

25

11

26

12

27

13

28

14

29

15

30

16

32

17

33

20

4

21

5

22

7

Name

IN1A

IN2A

SENSEA

RCA

OUT1A

GND

OUT1B

RCB

SENSEB

IN1B

IN2B

VREFB

ENB

VBOOT

OUT2B

VSB

VSA

OUT2A

VCP

Type

Function

Logic input Bridge A Logic Input 1.

Logic input Bridge A Logic Input 2.

Power Supply Bridge A Source Pin. This pin must be connected to Power

Ground through a sensing power resistor.

RC Pin

RC Network Pin. A parallel RC network connected

between this pin and ground sets the Current Controller

OFF-Time of the Bridge A.

Power Output Bridge A Output 1.

GND

Signal Ground terminals. In Power DIP and SO packages,

these pins are also used for heat dissipation toward the

PCB.

Power Output Bridge B Output 1.

RC Pin

RC Network Pin. A parallel RC network connected

between this pin and ground sets the Current Controller

OFF-Time of the Bridge B.

Power Supply Bridge B Source Pin. This pin must be connected to Power

Ground through a sensing power resistor.

Logic Input Bridge B Input 1

Logic Input Bridge B Input 2

Analog Input Bridge B Current Controller Reference Voltage.

Do not leave this pin open or connect to GND.

Logic Input (6)

Bridge B Enable. LOW logic level switches OFF all Power

MOSFETs of Bridge B. This pin is also connected to the

collector of the Overcurrent and Thermal Protection

transistor to implement over current protection.

If not used, it has to be connected to +5V through a

resistor.

Supply

Voltage

Bootstrap Voltage needed for driving the upper Power

MOSFETs of both Bridge A and Bridge B.

Power Output Bridge B Output 2.

Power Supply Bridge B Power Supply Voltage. It must be connected to

the supply voltage together with pin VSA.

Power Supply Bridge A Power Supply Voltage. It must be connected to

the supply voltage together with pin VSB.

Power Output Bridge A Output 2.

Output

Charge Pump Oscillator Output.

4/22

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