Datasheet L9651 Datasheet (SGS Thomson Microelectronics)

■

Modified VDMOS Power Stage (U

■

RDSON < 500 mOhm (Tj = 25°C)

■

CMOS Compatible Inputs

■

Enable Input (Reset)

■

Outputs Capable of up to 2.2 Amperes

■

Outputs Internally Clamped at 70V for Fast

DSBR

> 80V)

Inductive Load Switch Off

■

Wide operating supply voltage from 4.7V up to 30V

DIAGNO STIC FUNCTIONS

■

Open Load Detection (Output off, 100µsfiltering time)

■

Short to Ground Detection (Output off, 100µs filtering time)

■

Short to Battery Detection (Output on)

■

Over temperature detection (Output on)

■

Storage of last fault in 8 Bit - Serial Register

■

Fault Signal Indication at Serial Data Out without need to read out the Serial Interface

■

Daisy Chainable Serial Diagnostic

L9651

SMART QUAD SWITCH

PowerSO-20

ORDERING NUMBER: L9651

■

Serial Interface Clock Frequency up to 500kHz

DESCRIPTION

The L9651 consists of four identical low side power switches. A serial diagnostic interface indicates failure mode of each switch (short circuit to V ground and open load or over temperature).

BAT

or

BLOCK DIAGRAM

Reset

Inputs 1..4

April 2001

Four Fold

Turn On

Logic

V

BAT

Underv. Shutd.

●

References

Control

Gate

Data In

Clock Sync.

Serial Diagnostic

Fault Detection

Short Circuit

●

Protection

Serial Data Out

●

Output 1..4

Ground

1/9

L9651

PIN CONNECTION

(Top view)

GND

N.C.

IN1

IN2 OUT1 VBAT OUT2

DO

CL

1 2 3 4 5 6 7 8 9

GND 10

SO20POW

PIN FUNCTION

N° Pin Function

20 19 18 17 16 15 14 13 12 11

GND N.C. IN4 IN3 OUT4 R OUT3 DI SY GND

1, 10,

11, 20

2, 19 N.C. Not Connected

3 IN1 Input 1 4 IN2 Input 2 5 OUT1 Output 1 6 VBAT Supply Voltage 7 OUT2 Output 2 8 DO Serial Data Out

9 CL Clock 12 SY Synchronization 13 DI Serial Data In 14 OUT3 Output 3 15 R Reset 16 OUT4 Output 4 17 IN3 Input 3 18 IN4 Input 4

GND Ground

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ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

L9651

V

VR,V

VCLV

T

STG

T

V

BA T

V

BATtr

V

OUT

OUTtr

E

CL

-I

OUT

INi,VDI,

V

DO

Storage Temperature -55 to 150 Operating Junction Temperature -40 to 150

J

DC Supply Voltage -2 to 30 V Transient Supply Voltage; t < 400ms 40 V Output Voltage 65 V Transient Output Voltage; during clamping 78 V Output Clamping energy; repetition rate < 100 Hz 10 mJ Output reverse current 2 A Control Input voltage -0.3 to 6.5 V

SY

Control Output voltage -0.3 to 6.5 V

THERMAL DATA

Symbol Parameter Value Unit

R

th j-case

Thermal Resistance Junction to Case 2.5 °C/W

o

C

o

C

ELECTRICAL CHARACTERISTCS

(6.5V < V

< 25V, -40 < TJ < 150°C)

BAT

Symbol Parameter Test Condition Min. Typ. Max. Unit

Supply Voltage

V

BATU

I

BA T

Turn on threshold voltage 2.0 4.7 V Supply current V

V

BAT

OUTi

= 14V

> 0V

41015mA

Output stage

R

DSON

V

On resistance V

Clamping voltage,

CL

= 14V

BAT

T

= 25°C; I

J

= 14V

V

BAT

T

= 150°C; I

J

I

= 0.5 A 63 70 76 V

out

= 1A

out

= 1A

500

850

inductive load

I

OUTi

Over current shutdown

= -40°C

T

J

3.0

4.3 (Shutdown latch resets with pos. slope at INi)

= 25°C

T

J

= 150°C

T

J

2.5

2.2

3.7

3.5

Output leakage current see: Open load diagnostic current

mΩ

A A A

3/9

L9651

ELECTRICAL CHARACTERISTCS

(continued)

Symbol Parameter Test Condition Min. Typ. Max. Unit

Logic Inputs

V

INiLH

V

SYLH

V

CLLH

V

RLH

V

DILH

V

INiHL

V

SYHL

V

CLHL

V

RHL

V

DIHL

V

INih

V

SYh

V

CLh

V

Rh

V

DIh

- I

INi

- I

SY

- I

C L

- I

R

- I

DI

IN1...IN4, SY, CL, DI, R

Input High level 3.5 6.5 V

Input Low level -0.3 1.5 V

Hysteresis 0.2 1 V

Input current IN1 ... IN4, SY, CL, R (Internal pull up current source)

V

= 0V 10 40 120 µA

INi

V

SY

= 0V

10 80 VCL = 0V VR = 0V

Input current DI

VDI = 0V 120 220 250 µA

(Internal pull up current source)

Timing

t

don

t

doff

s s

t

f

t

vDV

t

vset

t

vhold

Turn on delay 7.5 µs Turn off delay 7.5 µs Switch on slew rate 10 V/µs

on

Switch off slew rate 15 V/µs

off

Over current detection time 0.5 µs

oc

t

Open load filtering time 60 100 20 0 µs

v

t

Short to GND filtering time 60 100 200 µs

v

Serial clock frequency 0 500 kHz

CL

DO: Datavalidtime 0.03 1 µs DI: Datasettlingtime 0.5 µs DI: Dataholdtime 0 µs

Diagnostic

V

BA TDU

Under voltage threshold 4.7 7.5 V

Serial Data output (External pull up required)

V

| I

Data output low voltage IDO < 1.6mA

DO

| Data output leakage current 10 µA

DO

7.5V < V

BA T

< 22V

00.45V

4/9

L9651

ELECTRICAL CHARACTERISTCS

(continued)

Symbol Parameter Test Condition Min. Typ. Max. Unit

Output voltage monitoring Output off

V

Open load threshold voltage

OL

(fault detected if V Short to GND threshold voltage

SG

(fault detected if V

OUTi

< VOL)

< VSG)

7.5V < V

BA T

< 22V

2/3V

1/3V

BA T

Open load diagnostic current Output off

- I

I

OUTi

Open load output voltage I

Output current V

= 0 A

OUT

V

= 5V

INi

7.5V < V

= 1V

OUT

V

= 5V

INi

= V

OUT

V

= 5V

INi

7.5V < V

BA T

BAT

BA T

< 22V

1/2V

BA T

50 100 150 µA

200 320 500 µA

Overload Diagnostic

I

OUTi

Over temperature diagnostic T

J

Over current TJ = -40°C

= 25°C

T

J

3.0

2.5

175 °C

4.3

3.7

A A

= 150°C

T

J

Figure 1. Typical Timing Diagram for Serial Diagnostic

Fault: Short to Battery o r over temp.

F ault: Open Load or Short to GN D

o. k.

DI

SY

CL

DO

< t

v

H L

Di1 Di2 Di3

H L

t

vset

H L

t

v

Bit1 Bit2

Bit3 Bit4

t

vhold

Bit5 Bit7 Bit8Bit6

t

vDV

1/f

2.2

CL

Di1 Di2

Di3

3.5

A

Shift R egister D ata Froze n

Reset of Shift Register

5/9

L9651

Figure 2. Serial Interface Error Coding

BIT 1

OUTPUT 1

BIT 2

BIT 4

BIT 3

OUTPUT 2

H

LH

L

H

LL

BIT 5 BIT 6

OUTPUT 3

o.k.

open load/over temperature short to ba tte ry

short to ground

Figure 3. Output voltage TIMING for inductive load

BIT 7 BIT 8

OUTPUT 4

BIT n

DI

6/9

0.8V

0.2V

V

V V

BA T

BA

V

INiH

V

INiL

OUTi

CL

BAT

INi

t

CL

s

OFF

s

ON

T

td

on

td

off

t

Figure 4. Application Circuit

L9651

V

BAT

●

5 Volt

Regulator

V

●

Controller

●●●●

CC

●

RESET

●

RR

IN1 IN2 IN3

IN4

DO

●

SY

OUT1

●

OUT2 OUT3

OUT4

DI

CL

●

Further

driver ICs

with

4-Wire-

DO SY

Diagnostic

CL

●

R

DI

7/9

L9651

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

mm inch

A 3.6 0.142 a1 0.1 0.3 0.004 0.012 a2 3.3 0.130 a3 0 0.1 0.000 0.004

b 0.4 0.53 0.016 0.021 c 0.23 0.32 0.009 0.013

D (1) 15.8 16 0.622 0.630

D1 9.4 9.8 0.370 0.386

E 13.9 14.5 0.547 0.570

e 1.27 0.050

e3 11.43 0.450

E1 (1) 10.9 11.1 0.429 0.437

E2 2.9 0.114 E3 5.8 6.2 0.228 0.244

G 0 0.1 0.000 0 .004

H 15.5 15.9 0.610 0.626

h 1.1 0.043

L 0.8 1.1 0.031 0.043 N 10˚ (max.) S

8˚ (max.)

T10 0.394

(1) "D and F" do not include mold flash or protrusions.

- Mold flash or protrusions shall not exceed 0.15 mm (0.006").

- Critical dimensions: "E", "G" and "a3"

OUTLINE AND

MECHANICAL DATA

JEDEC MO-166

PowerSO20

E2

h x 45

DETAIL B

BOTTOM VIEW

R

lead

a3

Gage Plane

E

DETAIL B

0.35

S

D1

L

c

a1

DETAIL A

slug

- C -

SEATING PLANE

GC

(COPLANARITY)

E3

NN

a2

A

b

DETAIL A

e3

H

D

T

1

e

1120

E1

10

PSO20MEC

8/9

L9651

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