Datasheet L9386MD Datasheet (SGS Thomson Microelectronics)

L9386MD

DUAL INTELLIGENT POWER LOW SIDE SWITCH

DUAL POWER LOW SIDE DRIVER WITH 2 x
5A

LOW R

TYPICALLY200mΩ@TJ=25°C

DSON

INTERNAL OUTPUT CLAMPING DIODES

=50V FOR INDUCTIVE RECIRCULATION

V

FB

LIMITED OUTPUT VOLTAGE SLEW RATE
FOR LOW EMI

µP COMPATIBLEENABLE AND INPUT
WIDE OPERATING SUPPLY VOLTAGE

RANGE4.5V TO 45V
REAL TIMEDIAGNOSTIC FUNCTIONS

- OUTPUTSHORTED TO GND

- OUTPUTSHORTED TO VSS

- OPENLOAD

- LOADBYPASS

- OVERTEMPERATURE
DEVICEPROTECTIONFUNCTIONS

- OVERLOADDISABLE

- REVERSEBATTERY UP TO -16V @ V

- THERMALSHUTDOWN

BLOCK DIAGRAM

IN1

DIAG1

S

Channel 1

MULTIPOWERBCD TECHNOLOGY

SO20 (12+4+4)

ORDERING NUMBER: L9386MD

DESCRIPTION

The L9386MD is a monolithic integrated dual low
side driver realized in an advanced Multipower­BCD mixed technology. It is especially intended
to drive valves in automotive environment. Its in­puts are µP compatible for easy driving.Particular
care has been taken to protect the device
against failures, to avoid electro-magnetic inter­ferences and to offer extensive real time diag­nostic.

OUT1

VS

OUT2

DIAG2

IN2

EN

Diagnostic

Control

Output
Control

R

QS

Delay
Timer

Overtemp

Overload

Openload

R

O

Channel 2

GND

January 1995

This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

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L9386MD

PIN CONNECTION(Top view)

IN1

DIAG2

OUT2

GND

GND

GND

GND

N.C.

EN

VS

ABSOLUTE MAXIMUM RATINGS

1

2

3

4

5

6

7

8

9

10

(no damage or latch)

IN2

20

DIAG1

19

OUT1

18

GND

17

GND

16

GND

15

GND

14

N.C.

13

N.C.

12

N.C.

11

Symbol Parameter Value Unit

VS

DC

VS

TR

V

IN,EN

VD

DC

VO

DC

VO

TR

I

O

I

OR

EO Switch-off energyfor inductive loads (t

T

jEO

T

j

T

a

DC supply voltage -16 to 45 V
Transient supply voltage ( t ≤ 500ms ) 60 V
Input voltage ( | ≤ | 10mA | ) -1.5 to 6 V
Diagnostic DC output voltage ( |≤| 50mA | ) -0.3 to 16 V
DC output voltage 45 V
Transient output voltage ( R

)60V

≥4Ω

L

Output load current internal limited
Reverse outputcurrent limited by load -4 A

= 250µs, T = 5ms) 50 mJ

EO

Junction temperature during switch-off ∑t = 30min 175 °C
Junction temperature -40 to +150 °C
Storage temperature -55 to +150 °C

THERMAL DATA

Symbol Parameter Value Unit

T

jDIS

R

th j-pins

ELECTRICAL CHARACTERISTICS

Thermal disable junction temperature threshold 160 to 190
Thermal resistance junction to pins 14

(Operating Range) - The electrical characteristics are valid within

the below defined operative range, unless otherwise specified.

Symbol Parameter Test Condition Min. Typ. Max. Unit

2/10

V

S

V

D

T

j

Board supply voltage 4.5 12 32 V
Stabilized diagnostic output

-0.3 5 16 V

voltage
Junction Temperature -40 150 °C

°

C/W

°

C

L9386MD

ELECTRICALCHARACTERISTICS

(continued)

Symbol Parameter Test Condition

IS

SB

Static standby supply current b)

c) V

EN

=L,VO≤VO

IS DC supply current b)

VD

ID

LE

Diagnostic ouput low voltage b) ID= 2mA

L

Diagnostic output leakage
current

ID Diagnostic output current

c) V

EN=VIN

c) I

D

VS = 0V or VS = open;
VD = 5.5V T

VD ≤ 16V DIAG = L 2 6 30 mA

= 1mA

=H

≤

j

capability

VO

UV

VO

∆

UV1,2

Open load voltage threshold VEN=X,VIN= L 0.51

Open load difference voltage
threshold

b) VEN = X, V
VS ≥ VO

C

≥ VO

IN1,2

VOC= output voltage of other
channel
c)

IO

UC

Open load current threshold a) VEN=VIN=H

c)

IO

VO

S

ON,OFF

R

R

DSON

V

(EN,IN)L

OC

IO

Over load current threshold b) 5 7 A
Output voltage during clamping IO

CL

100mA 45 52 60 V

≥

CL

Output (fall, rise) slew rate a) Fig. 2 200 1500 3200 V/ms
Internal output pull down resistor VEN= L 10 20 40 KΩ
Output on resistance VS > 9.5V IO = 2A

T

=25°C

j

T

= 150°C

j

Logic input low voltage |I

EN, IN

|≤10mA
b)
c)

V

(EN,IN)H

V

(EN,IN)hys

I

EN

I

IN

t

DON

t

D OFF

t

D H-L, Diag.

t

D IOu

t

DOL

Logic input high voltage 2.2 5.5 V
Logic input hysteresis 0.2 0.4 1 V
Enable input sink current 1V≤V
Logic input sink current 1V≤V

5.5V 10 30 60

≤

EN

5.5V 40 95 180

≤

IN

Output delay ON time a) Fig. 2 4 25
Output delay OFF time a) Fig. 2 5 15 30 µs
Diag. delay output OFF time a) Fig. 2 5 30 65 µs
Diagnostic open load delay time a) Fig. 4 8 50 µs
Diagnostic overload delay

a) Fig. 1 50 160 300 µs

switch-off time

125°C

=L

UV

Value

T

j1

Unit

Min. Typ. Max.

0.73 1.5

uv

15

1.3 5
15

mA
mA

mA
mA

0.35 0.5 V

0.1 2 µA

xVS

VO

0.9V

VO

0.7V
100

20

-1.5

-1.5

0.55

xVS

-

VO

C

1.25V

VO

-

C

1.25V
320 480 mA

200 300

0.59

V

xVS

-

VO

C

C

1)

-

V

1.6V

VO

-

C

C

V

-

1.8V

mA

mΩ

500

1

0.5

m

Ω

V
V

A

µ

A

µ

s

µ

a) 9V ≤ VS≤16V (Nominal operating range)

R

≤ 6Ω,

L

≤ IO

I

O

b) 6.5V ≤ VS≤ 16V(Diagnostic operation range)
c) 4.5V ≤ V

1) Limit under evaluation.

OC

< 6.5V and 16V < VS≤ 32V (Extended operation range)

S

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L9386MD

DIAGNOSTICTABLE

(Operatingrange: 4.5V≤V

≤

32V)

S

Conditions EN IN Out Diag.

Normal function L

GND short VO
Load bypass ∆VO
Open load IO

175°C

T

≥

j typ

< 0.55V L X off H

typ

≥ 1.25V H L off H

1,2

< 320mA H H on (*) L

typ

Oertemperature (**)
Latched Over load IO

> 5A X H off L

min

H
H

X
X

X

L

H

L

H

off
off

on (*)

off
off

L
L

H

H

L

Reset over load latch X D.C. D.C.

(*) for 4.5V ≤ VS < 6.5V, IO ≤ 2A diag. table is valid.
(**) Ifone diag.status showsthe overtemp.recognition,in parallel thisoutput will be switchedOFF internally.The correspondingchannelshould

be switched OFF additional by its Input or ENABLE signal, otherwise the overload latch will be set after t
be related to the overdrop sensing which will be used as over load recognition.

Figure 1:

Diagnosticoverload delay time

UI

5V

is passed. This behaviour will

DOL

t

IO

IO

SC

5A

IO

UC

td

OL

UD

5V

t

t

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L9386MD

Figure 2:

V

V

U

0.85VO

VS-VO

0.85VS
VO

0.15VS

Outputslope.

U

IN

5V

(IN)H

(IN)L

OUT

VO

C

C

VS

CC

UV

td

on

S

on

td

off

S

off

t

t

V

0.5V

DIAG

V

D

D

t

D

H-L

Diag

t

5/10

L9386MD

Figure 3:

Blockdiagram - Open load voltage detection.

L1 L2

OUT1 OUT2

IN

1

VS

55%

R

IO

-

V

Batt.

IN

R

IO

+

+

-

2

Enable

&&

R

S

Latch

Latch

S

Q

R

Q

&&

VO

UV1

VO

UV2

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L9386MD

Figure 4:

Logic diagram.

open load

voltage

normal

operation

OFF

ON

open load voltage

open load current

latch reset

off

td

normal

operation

u

on

td

IO

td

latched over.

load diagnostic

OL

td

over load

current

open load

current

normal

operation

u

on

td

IO

td

open load current

normal

operation

OFF ON

EN

V

IN

V

u

VO

o

IO

u

IO

D

V

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L9386MD

CIRCUIT DESCRIPTION

The L9386MD is a dual low side driver for induc­tive loads like valves in automotive environment.
The device is enabled by a common CMOS com­patible ENABLE high signal. The internal pull
down current sources at the ENABLE and INPUT
pins protect the device in open input conditions
against malfunctions. An output slope limitation
for du/dt is implementedto reduce the EMI. An in­tegrated active flyback voltage limitation clamps
the output voltage during the flyback phase to
50V.

Each driver is protected against short circuit and
thermal overload. In short circuit condition the
output will be disabled after a short delay time

to suppress spikes. This disable is latched

t

DOL

until a negativeslope occure at the correspondent
input pin. The thermal disable for T

> 175°Cof

J

the output will be reseted if the junction tempera­ture decreases about 20°C below the disable
thresholdtemperature.

For the real time error diagnosis the voltage and
the current of the outputs are compared with in­ternal fixed values VO
conditions to recognizeopen load (R

for OFF and IOUCfor ON

UV

≥

20KΩ,R

L

>38Ω) in ON and OFF conditions. The diagnostic

Figure 5:

Applicationcircuit diagram.

operatesalso in the extendedsupply voltage rang
of 4.5V ≤ VS≤ 32V.

Also the output voltages VO

are compared

1,2

against each other in OFF condition with a fixed
offset of∆VO

to recognize GND bypasses.

UV 1,2

To suppress mail∆VO diagnoses during the fly­back phases of the compared output, the ∆VO di­agnostic includes a latch function. Reaching the
flyback clamping voltage VO

the diagnostic sig-

C

nal is reseted by a latch. To activate again this
kind of diagnostic a low signal at the correspon­dent INPUT or the ENABLE pin must occur (see
also Fig.3).

The diagnostic output level in connection with dif­ferent ENABLE and INPUT conditions allows to
recognizedifferent fail states,like overtemp,short
to VSS, short to GND, bypass to GND and dis­connected load (see also page 7 diagnostic ta­ble).

The diagnostic output is also protected against
short to UD
threshold IO

. Overstepingthe over load current

max

, the output current will be limited in-

o

ternally during the diagnostic overload delay
switch-offtime t

L

DOL

.

+5V

µ P

Controller

DIAG1

DIAG2

IN1

EN

IN2

Diagnostic

Control

Output
Control

R

QS

Channel 1

Delay
Timer

Channel 2

Overtemp

Overload

Openload

GND

Z

VALVE

OUT1

VS

OUT2

R

O

Z

VALVE

V

Batt

8/10

SO20 PACKAGEMECHANICAL DATA

L9386MD

DIM.

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

A 2.65 0.104

a1 0.1 0.3 0.004 0.012
a2 2.45 0.096

b 0.35 0.49 0.014 0.019

b1 0.23 0.32 0.009 0.013

C 0.5 0.020

c1 45 (typ.)

D 12.6 13.0 0.496 0.512

E 10 10.65 0.394 0.419
e 1.27 0.050

e3 11.43 0.450

F 7.4 7.6 0.291 0.299
L 0.5 1.27 0.020 0.050

M 0.75 0.030

S 8 (max.)

mm inch

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L9386MD

Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No
license is granted by implication or otherwise under any patent or patentrights of SGS-THOMSON Microelectronics. Specification mentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronics products are notauthorized foruseas criticalcomponents in life support devicesor systemswithoutexpress
written approval of SGS-THOMSON Microelectronics.

 1996 SGS-THOMSON Microelectronics – Printedin Italy – All Rights Reserved

SGS-THOMSON Microelectronics GROUP OF COMPANIES

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