STMICROELECTRONICS L9386MD

L9386
Dual intelligent power low side switch
Features
■
Multipower BCD technology
■
Dual power low side driver with 2 x 5 A
■
Low RDSON typically 200 mΩ @ TJ = 25 °C
■
Internal output clamping diodes VFB = 50 V for
inductive recirculation
■
Limited output voltage slew rate for low EMI
■
µP compatible enable and input
■
Wide operating supply voltage range 4.5 V to
45 V
■
Real time diagnostic functions:
– Output shorted to GND
– Output shorted to VSS
– Open load
– Load bypass
– Over temperature
■
Description
The L9386 is a monolithic integrated dual low side
driver realized in an advanced Multipower BCD
mixed technology.
Device protection functions:
– Overload disable
– Reverse battery up to -16 V @ VS
– Thermal shutdown
Table 1.
SO20
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.
Device summary
Part number
Order code
Package
Packing
L9386
L9386MD
SO20 (12+4+4)
Tube
July 2008
Rev 3
1/14
www.st.com
14
Contents
L9386
Contents
1
Block and pins connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4
Circuit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2/14
L9386
1
Block and pins connection diagrams
Block and pins connection diagrams
Figure 1.
Block diagram
IN1
OUT1
Channel 1
DIAG1
VS
EN
OUT2
Output
Control
IN2
RO
Overtemp
Q
DIAG2
R
Delay
Timer
S
Diagnostic
Control
Overload
Openload
Channel 2
GND
Figure 2.
Pins connection (top view)
IN1
1
20
IN2
DIAG2
2
19
DIAG1
OUT2
3
18
OUT1
GND
4
17
GND
GND
5
16
GND
GND
6
15
GND
GND
7
14
GND
N.C.
8
13
N.C.
EN
9
12
N.C.
VS
10
11
N.C.
3/14
Electrical specifications
L9386
2
Electrical specifications
2.1
Absolute maximum ratings
Table 2.
Absolute maximum ratings (no damage or latch)
Symbol
Value
Unit
-16 to 45
V
60
V
Input voltage (| ≤ | 10 mA |)
-1.5 to 6
V
VDDC
Diagnostic DC output voltage (| ≤ | 50 mA |)
-0.3 to 16
V
VODC
DC output voltage
45
V
VOTR
Transient output voltage (RL ≥ 4 Ω)
60
V
VSDC
DC supply voltage
VSTR
Transient supply voltage (t ≤ 500 ms)
VIN,EN
2.2
IO
Output load current
IOR
Reverse output current limited by load
-4
A
EO
Switch-off energy for inductive loads
(tEO = 250 µs, T = 5 ms)
50
mJ
TjEO
Junction temperature during switch-off Σt = 30 min
175
°C
internal limited
Tj
Junction temperature
-40 to +150
°C
Tstg
Storage temperature
-55 to +150
°C
Value
Unit
160 to 190
°C
14
°C/W
Thermal data
Table 3.
Symbol
TjDIS
Rth j-pins
4/14
Parameter
Thermal data
Parameter
Thermal disable junction temperature threshold
Thermal resistance junction to pins
L9386
Electrical specifications
2.3
Electrical characteristics
Table 4.
Electrical characteristics
(The electrical characteristics are valid within the below defined operative range, unless
otherwise specified.)
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
VS
Board supply voltage
4.5
12
32
V
VD
Stabilized diagnostic output
voltage
-0.3
5
16
V
Tj
Junction temperature
150
°C
1.5
15
mA
1.3
5
15
mA
0.35
0.5
V
0.1
2
mA
2
6
30
mA
0.51
xVS
0.55
xVS
0.59
xVS
V
VEN = X, VIN1,2 = L
VS ≥ VOC ≥ VOUV
VOC = output voltage of other
channel
VOC0.9V
VOC1.25V
VOC1.6V
(2)
VOC0.7V
VOC1.25V
VOC1.8V
480
-40
(1)
ISSB
Static standby supply current
(2)
0.73
VEN = L, VO ≤ VOuv
(1)
IS
DC supply current
(2)
VEN = VIN = H
(1)
ID = 2 mA
ID = 1 mA
VDL
Diagnostic output low voltage
(2)
IDLE
Diagnostic output leakage
current
VS = 0 V or VS = open;
VD = 5.5 V Tj ≤ 125 °C
ID
Diagnostic output current
capability
VD ≤ 16 V DIAG = L
Open load voltage threshold
VEN = X, VIN = L
VOUV
(1)
ΔVOUV1,2
Open load difference voltage
threshold
(3)
IOUC
Open load current threshold
100
20
320
(2)
IOOC
Over load current threshold
b)
5
7
VOCL
Output voltage during clamping
IOCL ≥ 100mA
45
52
60
V
Output (fall, rise) slew rate
(3)
200
1500
3200
V/ms
Internal output pull down
resistor
VEN = L
10
20
40
KΩ
Output on resistance
VS > 9.5 V IO = 2 A
Tj = 25 °C
Tj = 150 °C
200
300
500
mΩ
-1.5
-1.5
1
0.5
V
2.2
5.5
V
SON,OFF
RIO
RDSON
V(EN,IN)L
Logic input low voltage
Logic input high voltage
see Figure 4
|IEN, IN|
(1)
(2)
V(EN,IN)H
VEN = VIN = H
V
mA
A
≤ 10 mA
5/14
Electrical specifications
Table 4.
L9386
Electrical characteristics (continued)
(The electrical characteristics are valid within the below defined operative range, unless
otherwise specified.)
Symbol
Parameter
V(EN,IN)hys
Test condition
Logic input hysteresis
Min.
Typ.
Max.
Unit
0.2
0.4
1
V
IEN
Enable input sink current
1 V ≤ VEN ≤ 5.5 V
10
30
60
µA
IIN
Logic input sink current
1 V ≤ VIN ≤ 5.5 V
40
95
180
µA
Output delay ON time
(3)
see Figure 4
4
25
µs
Output delay OFF time
(3)
see Figure 4
5
15
30
µs
Diag. delay output OFF time
(3)
see Figure 4
5
30
65
µs
tDIOu
Diagnostic open load delay time
(3)
see Figure 6
8
50
µs
tDOL
Diagnostic overload delay
switch-off time
(3)
see Figure 3
160
300
µs
tDON
tDOFF
tDH-L,Diag.
50
1. 6.5 V ≤ VS ≤ 16 V (Diagnostic operation range).
2. 4.5 V ≤ VS < 6.5 V and 16 V < VS ≤ 32 V (Extended operation range).
3. 9 V ≤ VS ≤ 16 V (Nominal operating range)
RL ≤ 6 Ω, IO ≤ IOOC.
Table 5.
Diagnostic table (operating range: 4.5 V ≤ VS ≤ 32 V)
Conditions
EN
IN
Out
Diag.
Normal function
L
H
H
X
L
H
off
off
on(1)
L
L
H
X
L
off
off
H
H
GND short
VOtyp < 0.55 V
Load bypass
ΔVO1,2 ≥ 1.25 V
L
H
Open load
IOtyp < 320 mA
H
H
on(1)
L
Tj typ ≥ 175 °C overtemperature(2)
X
X
L
H
off
off
H
L
Latched overload IOmin > 5 A
X
H
off
L
Reset overload latch
X
D.C.
D.C.
1. for 4.5 V ≤ VS < 6.5 V, IO ≤ 2 A diag. table is valid.
2. If one diag. status shows the overtemperature recognition, in parallel this output will be switched OFF internally. The
corresponding channel should be switched OFF additional by its Input or ENABLE signal, otherwise the overload latch will
be set after tDOL is passed. This behavior will be related to the overdrop sensing which will be used as over load
recognition.
6/14
L9386
Electrical specifications
Figure 3.
Diagnostic overload delay time
UI
5V
t
IO
IO SC
5A
IO UC
td OL
t
UD
5V
t
Figure 4.
Output slope
U IN
5V
V (IN)H
V (IN)L
td on
t
td off
U OUT
VO C
0.85VO C
VS
VS-VO C C
0.85VS
VO UV
0.15VS
Soff
Son
t
V DIAG
VD
0.5V D
tD
t
H-L Diag
7/14
Electrical specifications
Figure 5.
L9386
Open load voltage detection block diagram
VBatt.
L1
L2
OUT1
OUT2
IN 1
IN 2
R IO
R IO
VS
55%
&
&
R
Latch
S
R
Q
S
Latch
Q
8/14
&
&
VO UV1
VO UV2
-
+
+
-
Enable
VD
IO u
IO o
VO u
V IN
normal
operation
OFF
td IO
td on
u
normal
operation
ON
open load
current
td OL
over load
current
latched over.
load diagnostic
td IO
td on
u
normal
operation
ON
td off
normal
operation
OFF
open load
voltage
Figure 6.
open load voltage
V EN
L9386
Electrical specifications
Logic diagram
9/14
open load current
latch reset
open load current
Electrical specifications
2.4
L9386
Circuit description
The L9386 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 implemented to
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 tDOL to suppress spikes. This disable is
latched until a negative slope occur at the correspondent input pin. The thermal disable for
TJ > 175 °C of the output will be resetted if the junction temperature decreases about 20 °C
below the disable threshold temperature.
For the real time error diagnosis the voltage and the current of the outputs are compared
with internal fixed values VOUV for OFF and IOUC for ON conditions to recognize open load
(RL ≥ 20 kΩ, RL > 38Ω) in ON and OFF conditions. The diagnostic operates also in the
extended supply voltage range of 4.5 V ≤ VS ≤ 32 V.
Also the output voltages VO1,2 are compared against each other in OFF condition with a
fixed offset of ΔVOUV 1,2 to recognize GND bypasses. To suppress mail ΔVO diagnoses
during the flyback phases of the compared output, the ΔVO diagnostic
includes a latch function. Reaching the flyback clamping voltage VOC the diagnostic signal
is resetted 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 Figure 5).
The diagnostic output level in connection with different ENABLE and INPUT conditions
allows to recognize different fail states, like overtemperature, short to VSS, short to GND,
bypass to GND and disconnected load (see also Table 5 on page 6).
The diagnostic output is also protected against short to UDmax. Oversteping the over load
current threshold IOo, the output current will be limited internally during the diagnostic
overload delay switch-off time tDOL.
10/14
L9386
Electrical specifications
Figure 7.
Open load voltage detection block diagram
+5V
IN1
Z VALVE
Channel 1
OUT1
DIAG1
VS
EN
µP
Output
Control
Controller
OUT2
RO
Z VALVE
V Batt
Overtemp
IN2
R
Q S
Delay
Timer
Overload
DIAG2
Diagnostic
Control
Openload
Channel 2
GND
11/14
Package information
3
L9386
Package information
In order to meet environmental requirements, ST (also) offers these devices in ECOPACK®
packages. ECOPACK® packages are lead-free. The category of second Level Interconnect
is marked on the package and on the inner box label, in compliance with JEDEC Standard
JESD97. The maximum ratings related to soldering conditions are also marked on the inner
box label.
ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.
Figure 8.
SO20 mechanical data and package dimensions
mm
inch
DIM.
MIN.
A
TYP.
2.35
MAX.
MIN.
2.65
0.093
TYP.
MAX.
0.104
A1
0.10
0.30
0.004
0.012
B
0.33
0.51
0.013
0.200
C
0.23
0.32
0.009
0.013
D (1)
12.60
13.00
0.496
0.512
E
7.40
7.60
0.291
0.299
e
1.27
0.050
H
10.0
10.65
0.394
0.419
h
0.25
0.75
0.010
0.030
L
0.40
1.27
0.016
0.050
k
ddd
OUTLINE AND
MECHANICAL DATA
0˚ (min.), 8˚ (max.)
0.10
0.004
(1) “D” dimension does not include mold flash, protusions or gate
burrs. Mold flash, protusions or gate burrs shall not exceed
0.15mm per side.
SO20
0016022 D
12/14
L9386
4
Revision history
Revision history
Table 6.
Document revision history
Date
Revision
Changes
16-Jan-2002
1
Initial release.
20-Sep-2003
2
Changed company name and logo.
16-Jul-2008
3
Document reformatted.
Added Table 1: Device summary on page 1.
13/14
L9386
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT
RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING
APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,
DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE
GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
© 2008 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
14/14