L9375LF_技术文档

L9375

Eight channel valve driver

Data brief

Features

■ Octal low-side output drivers with protection

diagnostic

– 4 x 3A, 160 mΩ typ.

– 4 x 3A, 200 mΩ typ.

PowerSO-36

■ Programmable channel timer

■ Clock monitor

■ 4 channels with Integrated recirculation diodes

be activated by the set point unit. Is possible to

program two output duty cycles per channel with

a block of 16 SPI commands as well as an

individual duration time for each channel

actuation. Both information are stored in the PWM

and in the counter configuration register

respectively.

■ 4 channels with 40 V clamp for fast free

wheeling of inductive loads.

■ Serial peripheral interface with 16 bits, up to

5 MHz with diagnosis

■ Battery compatible supply voltage

■ Detailed Load diagnosis

– Over load protection

– Open load

The PWM Controller translates the programmed

digital duty cycle value in a PWM signal which

controls the output.

– Undercurrent

The channels 1 to 4 are configured as switching

channels. To achieve a fast switch off a high

voltage output clamp is implemented for a rapid

free-wheeling if the inductive load. The switch on

time can be programmed via SPI.

– Undervoltage

– Temperature warning and shutdown

– Power or signal GND loss

– Freewheeling diode loss

All channels are equipped with a load diagnostic.

This allows to detect an open load in off condition

as well as a under current in on condition. The

power stage is protected against over current and

over temperature. A weak connection in power

ground, in the recirculation path or in the external

clock is monitored and leads to a switch off of the

power stages in case an error occurs. All

monitored functions can be read out in a serial

diagnostic protocol dedicated for each channel

via SPI.

Description

The L9375 s a eight channel low side driver with

integrated recirculation diodes for PWM controlled

channels 5 to 8. The switching of the channels is

programmable via a SPI (serial peripheral

interface). The main time base is given by an

external clock via CLKin. The clock unit monitors

this external clock and provides the system clock

for all timings. A synchronization unit is used to

monitor the SPI communication and provide a

sync signal for the channel activation.

Table 1.

Device summary

Package

Part number

Packing

The output duty cycle for each PWM controlled

channel can be programmed individually and will

L9375LF

PowerSO-36 (slug down)

Tube

May 2009

Doc ID 12521 Rev 2

1/9

For further information contact your local STMicroelectronics sales office.

www.st.com

9

Block diagram

L9375

1

Block diagram

Figure 1.

Block diagram

e v

h c e t i d w v S a l

e l d r v o a l l o n c t M W P

e v

n o i t c e

e s T / I P S N Y C S / /

r r o r D a e r t d a E t n d S / o d M i

e t r s C g L i K e R e a g D n o i s

t

-

e t r s g i

o i n R e g i u r a t C M o n W f P

o i n a R t e g i u n r f C o C o u n t

g i u r e R e o i t n a C c o n u f n m i C o m

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Doc ID 12521 Rev 2

L9375

Pins description

2

Pins description

Figure 2.

Pins connection (top view)

1

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

NC

Q1

PGND

2

Q5

3

Q1

Q5

4

Q2

D5

5

Q2

D5

6

Q6

SGND

EN

7

Q6

8

NC

SPICS

MISO

MOSI

SPICLK

CLKIN

VS

9

D8/D6

NC

10

11

12

13

14

15

16

17

18

Q8

Q4

D7

Q4

D7

Q3

Q7

Q3

Q7

NC

PGN

D06AT547

Table 2.

Pin No.

Pins description

Name

Description

1

2

NC

Q1

Not connected.

Output.

3

Q1

Output.

4

Q2

Output.

5

Q2

Output.

6

Q6

Output.

7

Q6

Output.

8

NC

Not connected.

Free wheeling diode.

Not connected.

Output.

9

D8/D66

NC

10

11

12

13

Q8

Output.

Doc ID 12521 Rev 2

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Pins description

L9375

Table 2.

Pin No.

Pins description (continued)

Name

Description

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

Q4

Output.

Q3

Output.

Q3

Output.

NC

Not connected.

Power ground.

Output.

PGND

Q7

Output.

D7

Output.

D7

Output.

VS

Supply pin

Input for precise clock.

SPI communication clock.

CLKIN

SPICLK

MOSI

MISO

SPICS

EN

Input Master Out Slave Input for SPI communication.

Master In Slave Out out for SPI communication.

SPI Chip Select.

Enable

SGND

D5

Signal ground.

Free wheeling diode.

Output.

D5

Q5

Output.

PGND

Power ground.

4/9

Doc ID 12521 Rev 2

L9375

Absolute maximum ratings

3

Absolute maximum ratings

3.1

Voltage ratings

Table 3.

Symbol

Voltage ratings

Parameter

Min

Max

Unit

V_s

Supply voltage

-0.3

38

35

V

V_Dx

V_Qx

V_EN

Freewheeling diode voltage

Output voltage

Enable voltage

V_SPICLKSPI clock voltage

V_SPICSSPI chip select voltage

V_MOSISPI MOSI voltage

V_MISOSPI MISO voltage

V_CLKINSPI clock input voltage

-0.3

6

V

Warning: Transients beyond this limit will cause currents into ESD

structures which must be limited externally to 10 mA

(maximum energy to be dissipated: 2 mJ).

3.2

Current ratings

Table 4.

Symbol

Current ratings

Parameter

Min

Max

Unit

I_Q

Output current at reversal voltage

-

-2

A

I_{EN_CL}

I_{SPICLK_CL}

Input clamping currents (static)

- 3

+ 3

I_{SPICS_CL}

I_{MOSI_CL}

I_{CLKIN_CL}

mA

Input clamping currents (dynamic)

-10

+10

Definition:

current from outside towards the L9375

-> " + "

Current from L9375 towards ext. components -> " - "

Doc ID 12521 Rev 2

5/9

Absolute maximum ratings

L9375

3.3

ESD susceptibility

3.3.1

HBM

ESD susceptibility HBM according to EIA/JESD 22-A 114B

Table 5.

HBM

Symbol

V_QHBM

V_LHBM

Parameter

Condition

Min

Max

Unit

PGND12, PGND3, PGND4, LGND

and GND are connected together.

Output pins D_X; Q_X;

Logic Pins

4

2

-

kV

all Pins

3.3.2

MM

ESD susceptibility according to EIA/JESD22-A115-A

Table 6.

Symbol

V_MM

MM

Parameter

Condition

Min

250

Max

Unit

Machine Model (MM)

All pins

-

V

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Doc ID 12521 Rev 2

L9375

Package information

4

Package information

In order to meet environmental requirements, ST offers these devices in different grades of

®

ECOPACK packages, depending on their level of environmental compliance. ECOPACK

specifications, grade definitions and product status are available at: www.st.com.

®

ECOPACK is an ST trademark.

Figure 3.

PowerSO-36 (slug down) mechanical data and package dimensions

mm

inch

DIM.

MIN.

TYP. MAX. MIN.

3.60

TYP. MAX.

0.1417

0.0118

0.1299

0.0039

0.0150

0.0126

0.6299

0.3858

0.5709

0.4370

0.1142

0.2441

0.0256

0.4350

0.0039

0.6260

0.0433

OUTLINE AND

MECHANICAL DATA

A

a1

a2

a3

b

0.10

0.30 0.0039

3.30

0

0.10

0.22

0.23

15.80

9.40

13.90

10.90

0.38 0.0087

0.32 0.0091

16.00 0.6220

9.80 0.3701

14.5 0.5472

11.10 0.4291

2.90

c

D

D1

E

E1

E2

E3

e

5.80

6.20 0.2283

0.65

e3

G

11.05

0

0.10

H

15.50

15.90 0.6102

1.10

h

L

0.8

1.10 0.0315

10˚ (max)

8˚ (max)

N

s

PowerSO-36

Note: “D and E1” do not include mold flash or protusions.

- Mold flash or protusions shall not exceed 0.15mm (0.006”)

- Critical dimensions are "a3", "E" and "G".

0096119 C

Doc ID 12521 Rev 2

7/9

Revision history

L9375

5

Revision history

Table 7.

Date

Document revision history

Revision

Changes

05-Jun-2007

19-May-2009

1

2

Initial release.

Updated Table 1: Device summary on page 1.

Updated Section 4: Package information on page 7.

8/9

Doc ID 12521 Rev 2

L9375

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Doc ID 12521 Rev 2

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型号：	L9375LF
厂家：	ST
描述：	PWM BASED PRPHL DRVR, PDSO36, GREEN, SOP-36 驱动光电二极管接口集成电路驱动器
文件：	总9页 (文件大小：119K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

L9375LF [STMICROELECTRONICS]

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