L6258E 데이터 시트보기 (PDF) - STMicroelectronics

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L6258E

PWM CONTROLLED - HIGH CURRENT DMOS UNIVERSAL MOTOR DRIVER

STMicroelectronics 

L6258E

PIN FUNCTION

Pin #

Name

Description

1, 36

2, 17

PWR_GND

PH_1, PH_2

Ground connection (1). They also conduct heat from die to printed circuit copper.

These TTL compatible logic inputs set the direction of current flow through the load. A

high level causes current to flow from OUTPUT A to OUTPUT B.

3

I1_1

Logic input of the internal DAC (1). The output voltage of the DAC is a percentage of the

Vref voltage applied according to the thruth table of page 7

4

I0_1

See pin 3

5

OUT1A

Bridge output connection (1)

6

DISABLE Disables the bridges for additional safety during switching. When not connected the

bridges are enabled

7

TRI_cap Triangular wave generation circuit capacitor. The value of this capacitor defines the output

switching frequency

8

VCC (5V) Supply Voltage Input for logic circuitry

9

GND

Power Ground connection of the internal charge pump circuit

10

11

12

13, 31

14

VCP1

VCP2

VBOOT

VS

OUT2A

Charge pump oscillator output

Input for external charge pump capacitor

Overvoltage input for driving of the upper DMOS

Supply voltage input for output stage. They are shorted internally

Bridge output connection (2)

15

16

18, 19

20, 35

I0_2

I1_2

PWR_GND

SENSE2,

SENSE1

Logic input of the internal DAC (2). The output voltage of the DAC is a percentage of the

VRef voltage applied according to the truth table of page 7

See pin 15

Ground connection. They also conduct heat from die to printed circuit copper

Negative input of the transconductance input amplifier (2, 1)

21

OUT2B

Bridge output connection and positive input of the tranconductance (2)

22

I3_2

See pin 15

23

I2_2

See pin 15

24

EA_OUT_2 Error amplifier output (2)

25

26, 28

27

EA_IN_2

VREF2, VREF1

SIG_GND

Negative input of error amplifier (2)

Reference voltages for the internal DACs, determining the output current value. Output

current also depends on the logic inputs of the DAC and on the sensing resistor value

Signal ground connection

29

EA_IN_1 Negative input of error amplifier (1)

30

EA_OUT_1 Error amplifier output (1)

32

I2_1

See pin 3

33

I3_1

See pin 3

34

OUT1B

Bridge output connection and positive input of the tranconductance (1)

Note: The number in parenthesis shows the relevant Power Bridge of the circuit. Pins 18, 19, 1 and 36 are connected together.

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