View L9386MD_446025.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

L9386MD
DUAL INTELLIGENT POWER LOW SIDE SWITCH
DUAL POWER LOW SIDE DRIVER WITH 2 x 5A LOW RDSON TYPICALLY 200m @ TJ = 25C INTERNAL OUTPUT CLAMPING DIODES VFB=50V FOR INDUCTIVE RECIRCULATION LIMITED OUTPUT VOLTAGE SLEW RATE FOR LOW EMI P COMPATIBLE ENABLE AND INPUT WIDE OPERATING SUPPLY VOLTAGE RANGE 4.5V TO 45V REAL TIME DIAGNOSTIC FUNCTIONS - OUTPUT SHORTED TO GND - OUTPUT SHORTED TO VSS - OPEN LOAD - LOAD BYPASS - OVERTEMPERATURE DEVICE PROTECTION FUNCTIONS - OVERLOAD DISABLE - REVERSE BATTERY UP TO -16V @ VS - THERMAL SHUTDOWN MULTIPOWER BCD 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 P 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.
BLOCK DIAGRAM
IN1 DIAG1
OUT1
Channel 1
VS
EN
OUT2 Output Control IN2 Overtemp R O
R DIAG2 Q S
Delay Timer
Overload
Diagnostic Control
Openload
Channel 2
GND
January 1995
1/10
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
L9386MD
PIN 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.
ABSOLUTE MAXIMUM RATINGS (no damage or latch)
Symbol VSDC VSTR VIN,EN VD DC VODC VOTR IO IOR EO TjEO Tj Ta Parameter DC supply voltage Transient supply voltage ( t 500ms ) Input voltage ( | | 10mA | ) Diagnostic DC output voltage ( | | 50mA | ) DC output voltage Transient output voltage ( RL 4 ) Output load current Reverse output current limited by load Switch-off energy for inductive loads (tEO = 250s, T = 5ms) Junction temperature during switch-off t = 30min Junction temperature Storage temperature Value -16 to 45 60 -1.5 to 6 -0.3 to 16 45 60 internal limited -4 50 175 -40 to +150 -55 to +150 Unit V V V V V V A mJ C C C
THERMAL DATA
Symbol TjDIS Rth j-pins Parameter Thermal disable junction temperature threshold Thermal resistance junction to pins Value 160 to 190 14 Unit C C/W
ELECTRICAL CHARACTERISTICS (Operating Range) - The electrical characteristics are valid within the below defined operative range, unless otherwise specified.
Symbol VS VD Tj 2/10 Parameter Board supply voltage Stabilized diagnostic output voltage Junction Temperature Test Condition Min. 4.5 -0.3 -40 Typ. 12 5 Max. 32 16 150 Unit V V C
L9386MD
ELECTRICAL CHARACTERISTICS (continued)
Symbol ISSB IS VD L ID LE ID VOUV VOUV1,2 Parameter Static standby supply current DC supply current Diagnostic ouput low voltage Diagnostic output leakage current Diagnostic output current capability Open load voltage threshold Open load difference voltage threshold Test Condition Min. b) c) VEN = L, VO VOuv b) c) VEN = VIN = H b) ID = 2mA c) ID = 1mA VS = 0V or VS = open; VD = 5.5V Tj 125C VD 16V DIAG = L VEN = X, VIN = L b) VEN = X, VIN1,2 = L VS VOC VOUV VOC = output voltage of other channel c) a) VEN = VIN = H c) b) IOCL 100mA a) Fig. 2 VS > 9.5V IO = 2A Tj = 25C Tj = 150C |IEN, IN| 10mA b) c) -1.5 -1.5 2.2 0.2 1V VEN 5.5V 1V VIN 5.5V a) Fig. 2 a) Fig. 2 a) Fig. 2 a) Fig. 4 a) Fig. 1 50 5 5 10 40 0.4 30 95 4 15 30 8 160 2 0.51 x VS VOC0.9V VOC0.7V 100 20 5 45 200 10 Value Tj1 Typ. 0.73 1.3 0.35 0.1 6 0.55 x VS VOC1.25V VOC1.25V 320 7 52 1500 20 200 60 3200 40 300 500 1 0.5 5.5 1 60 180 25 30 65 50 300 Max. 1.5 15 5 15 0.5 2 30 0.59 x VS VOC1.6V VOC1.8V 480 mA mA mA mA V A mA V V1) Unit
V
IO UC IO OC VOCL SON,OFF R IO R DSON
Open load current threshold Over load current threshold Output voltage during clamping Output (fall, rise) slew rate Output on resistance
mA mA A V V/ms K m m V V V V A A s s s s s
Internal output pull down resistor VEN = L
V(EN,IN)L
Logic input low voltage
V(EN,IN)H V(EN,IN)hys IEN IIN tD ON tD OFF tD H-L, Diag. tD IOu tDOL
Logic input high voltage Logic input hysteresis Enable input sink current Logic input sink current Output delay ON time Output delay OFF time Diag. delay output OFF time Diagnostic open load delay time Diagnostic overload delay switch-off time
a) 9V VS 16V (Nominal operating range) RL 6, IO IOOC b) 6.5V VS 16V (Diagnostic operation range) c) 4.5V VS < 6.5V and 16V < VS 32V (Extended operation range) 1) Limit under evaluation.
3/10
L9386MD
DIAGNOSTIC TABLE (Operating range: 4.5V VS 32V)
Conditions Normal function EN L H H VOtyp < 0.55V VO1,2 1.25V IOtyp < 320mA L H H X X X X IN X L H X L H L H H Out off off on (*) off off on (*) off off off D.C. Diag. L L H H H L H L L D.C.
GND short Load bypass Open load
Tj typ 175C Oertemperature (**) Latched Over load IO min > 5A Reset over load latch
(*) for 4.5V VS < 6.5V, IO 2A diag. table is valid.
(**) If one diag.status shows the overtemp. 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 behaviour will be related to the overdrop sensing which will be used as over load recognition.
Figure 1: Diagnostic overload delay time
UI
5V
t
IO
IO SC 5A
IO
UC td OL t
UD
5V
t
4/10
L9386MD
Figure 2: Output slope.
U
IN
5V V
(IN)H V (IN)L t td on U td off
OUT
VO 0.85VO
C C Soff Son
VS-VO
VS CC 0.85VS VO UV
0.15VS t
V
DIAG V
D
0.5V
D
t
t D H-L Diag
5/10
L9386MD
Figure 3: Block diagram - Open load voltage detection.
V Batt.
L1 OUT1 OUT2
L2
IN1 R IO R IO
IN2
VS
55%
-
+
+
-
Enable
&
R S
&
Latch
Q
R
S
Latch
Q
&
VO UV1
&
VO UV2
6/10
Figure 4: Logic diagram.
V
EN
V
IN
VO
u
td on
td on
IO o
td off
IO
u
V
D
normal operation current over load current td OL
td IO
latch reset
open load current
open load current
open load voltage
OFF
u
normal operation
open load
latched over. load diagnostic
td IO u
normal operation ON
normal operation OFF
open load voltage
ON
L9386MD
7/10
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 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 occure at the correspondent input pin. The thermal disable for TJ > 175C of the output will be reseted if the junction temperature decreases about 20C 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 20K, RL > 38) in ON and OFF conditions. The diagnostic Figure 5: Application circuit diagram. operates also in the extended supply voltage rang of 4.5V VS 32V. Also the output voltages VO1,2 are compared against each other in OFF condition with a fixed offset of VOUV 1,2 to recognize GND bypasses. 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 VOC the diagnostic signal 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 recognize different 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 UDmax. Oversteping the over load current threshold IOo, the output current will be limited internally during the diagnostic overload delay switch-off time t DOL.
+5V
IN1
Z VALVE
Channel 1
DIAG1
OUT1
EN
VS
P Controller
Output Control Overtemp IN2 R Q DIAG2 Diagnostic Control Openload S Delay Timer Overload RO OUT2 Z VALVE V Batt
Channel 2
GND
8/10
L9386MD
SO20 PACKAGE MECHANICAL DATA
DIM. MIN. A a1 a2 b b1 C c1 D E e e3 F L M S 7.4 0.5 12.6 10 1.27 11.43 7.6 1.27 0.75 8 (max.) 0.291 0.020 13.0 10.65 0.35 0.23 0.5 45 (typ.) 0.496 0.394 0.050 0.450 0.299 0.050 0.030 0.512 0.419 0.1 mm TYP. MAX. 2.65 0.3 2.45 0.49 0.32 0.014 0.009 0.020 0.004 MIN. inch TYP. MAX. 0.104 0.012 0.096 0.019 0.013
9/10
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 patent rights 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 not authorized for use as criticalcomponents in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. (c) 1996 SGS-THOMSON Microelectronics - Printed in Italy - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.
10/10

▲Up To Search▲

Price & Availability of L9386MD

	To Download L9386MD Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .