View L9349_215275.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

L9349
QUAD INTELLIGENT POWER LOW SIDE SWITCH
s s s
s s s s
Quad power low side driver with 2 x 5A and 2 x 3A output current capability Low RDSON typically 200m and 300m @ Tj = 25C Internal output clamping structures with VFB = 50V for fast inductive load current recirculation Limited output voltage slew rate for low EMI Protected P compatible enable and input Wide operating supply voltage range 4.5V to 32V Real time diagnostic functions: - Output shorted to GND - Output shorted to VSS - Open load detection in ON and OFF condition - Load bypass detection - Overtemperature detection Device protection functions: - Overload disable - Selective thermal shutdown Signal- and Power-Ground-loss shutdown
PowerSO20 BARE DIE ORDERING NUMBERS: L9349 L9349DIE1
DESCRIPTION The L9349 is a monolithic integrated quad low side driver realized in an advanced MultipowerBCD mixed technology. The device is intended to drive valves in automotive environment. The inputs are P compatible. Particular care has been taken to protect the device against failures, to avoid electromagnetic interferences and to offer extensive real time diagnostic.
s
s
BLOCK DIAGRAM
IN1 D1 EN Channel 1 OUT1
VS
52V Output Control IN4 R Q D4 Diagnostic Control Channel 4 Openload S Delay Time Overtemp R IO OUT4
Overload
IN2 D2
Channel 2
OUT2
IN3 D3
Channel 3
OUT3
00AT0025
GND
September 2002
1/12
L9349
PIN CONNECTION
Heat sink connected to pins 1, 10, 11, 20 PGND OUT1 D1 IN4 VS NC IN3 D2 OUT2 PGND 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 PGND OUT4 D4 IN1 EN GND IN2 D3 OUT3 PGND
00AT0026
PIN DESCRIPTION
N 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Pin PGND Out1 D1 IN4 VS NC IN3 D2 Out2 PGND PGND Out3 D3 IN2 GND EN IN1 D4 Out4 PGND Power Ground Output 1 (5A) Diagnostic 1 Input 4 Supply Voltage Not Connected Input 3 Diagnostic 2 Output 2 (5A) Power Ground Power Ground Output 3 (3A) Diagnostic 3 Input 2 Signal Ground Common Enable Input 1 Diagnostic 4 Output 4 (3A) Power Ground Function
2/12
L9349
THERMAL DATA
Symbol RTh j-case Parameter Thermal resistance junction to case Value 3 Unit C/W
ABSOLUTE MAXIMUM RATINGSI
Symbol VS VSP Parameter DC Supply Voltage Supply Voltage Pulse (duration <200ms) Supply Voltage Slope Input Voltage Diagnostic DC Output Voltage DC Output Voltage DC Output Current Out 1, 2 DC Output Current Out 3, 4 Reverse Output Current Reverse Output Current Switch-off Energy for Inductive Loads tEO = 250s,1) T = 5ms GND Potential Difference Junction Temperature During Switch-off Junction Temperature Storage Temperature Thermal Disable Junction Temp. Threshold Electrostatical Discharging OUT1 - 4 MIL883C vs. Common-GND (PGNDs + GND) Tj = -40 to 150C Conditions Value -0.3 to 32 -0.3 to 45 10 Unit V V V/s V V V A A A A mJ mJ V C C C C C kV kV
dVS/dt
VIN, EN VD VODC IO1, 2 IO3, 4 IOR1, 2 IOR3, 4 EO1, 2 EO3, 4
I10mA
I 50mA
-1.5 to 6 -0.3 to 16 -0.3 to 45 5 3 -5 -3 50 30 0.3 175 190 -40 to TjDIS -55 to 150 180 to 210 +-2 +-4
VGND
TjEO Tj Tstg TjDIS ESD ESD
t 30 min t 15 min
1)
tEO is the clamping time (see Figure 1)
Electrical Characteristcs (Operating Range) The electrical characteristics are valid within the below defined operating range, unless otherwise specified.
Symbol VS Tj1 Tj2
1)
Parameter Board Supply Voltage Junction Temperature Junction Temperature
Test Condition
Min. 4.5 -40
Typ. 12
Max. 32 150 TjDIS
Unit V C C
t 15min 1) over life time
150
Parameters guaranteed by correlation
3/12
L9349
ELECTRICAL CHARACTERISTICS (VS = 4.5 to 32V; -40C Tj1 150C < Tj2 TjDIS, unless other-wise specified.)
Values Tj1 Symbol Supply IVS OFF IVS ON DC Supply Current Off EN = 1.0V DC Supply Current On VS 14V; VIN, VEN = 2V 5 8 10 mA mA Parameter Test Conditions Min. Typ. Max. Min. Max. Values Tj2 Unit
Diagnostic Outputs D1 - D4 VDL IDLE Diagnostic Output Low ID 3mA Voltage Diagnostic Output Leakage Current VD = 14V 1) 0.65 0.1 1.0 2 1.5 20 V
A
Outputs Out 1 - Out 4 RDSON 1, 2 Output On Resistance Tj = 25C Tj = 150C VS > 9.5V IO1,2 = 2A Tj = 25C Tj = 150C VS > 9.5V IO3,4 = 1.3A Z-diode clamping voltage Output pull down resistor Open Load Voltage Threshold IOCL 200mA VS > 9.5V EN = 0V VIN = 1V 45 10 0.525 x VS 0.55 x VS 0.003 x VS VIN1,4/2,3 = 1V VS 16V VOc S 4.5V VOC = output voltage of other channel VOC 1.0V VOC 1.25V VOC 1.5V 200 300 500 m
RDSON 3, 4
300
450 750
m
VZ RO VOUV 1-4
60 40 0.575 x VS 50
V k V V V
VOUV hys 1- Hysteresis
4
VOUV 1-4,
2-3, 4-1, 3-2
Open Load Difference Voltage Threshold
VOUV hys Open Load Hysteresis
1-4, 2-3, 4-1, 3-2
40
mV
IOUC 1, 2, 3,
4
Open Load Current Threshold Over Load Current Threshold Thermal Shut Down Thermal Shut Down hysteresis
VEN=VIN=2V; VS=6.5 - 16V VS > 6.5V; VOUT = 32V
160
320
480
mA
IOOC 1, 2 IOOC 3, 4 TSD TSD-hys
5 3 180
10 6 195 20 210
A A C C
4/12
L9349
ELECTRICAL CHARACTERISTICS (continued) (VS = 4.5 to 32V; -40C Tj1 150C < Tj2 TjDIS, unless other-wise specified.)
Values Tj1 Symbol IOUT-LE Parameter OUT leakage current Test Conditions Min. VOUT = 20V VS = 0V Typ. Max. 5 Min. Max. Values Tj2 Unit
A
Inputs IN1-4, EN VIN,EN L VIN,EN H VEN,IN hys IIN IEN Timing tON Output Delay ON Time IO = 1A VS = 12V
3))
Logic Input/Enable Low Voltage Logic Input/Enable High Voltage Logic Input Hysteresis Input Sink Current Enable Sink Current 2V < VIN, VEN < 6V 2) VIN, VEN < Vs IN, EN
-0.3 2.0 50 10 10 100 20 20
1 6
V V mV
40 40
A A
4
25
s
Fig. 2 3 10 30
tf,r
Output fall and rise time
IO = 1A VS = 12V Fig. 2 IO = 1A VS = 12V
3)
s
tOFF
Output Delay OFF Time
5
15
30
s
Fig. 2 Fig. 2 8 8 6 65 50 65 90
tDH-L, Diag tD IOU tDOL
Diag. Delay Output OFF Time Diagnostic Open Load Delay Time Diagnostic Overload Delay Switch-OFF Time Filter time
3)
s s s
9V< VS <16V, Fig 3 9V< VS <16V, Fig 3
tfilt PGND
4
24
s
PGNDloss,h Power GND loss threshold high PGNDloss,l Power GND loss threshold low
1) 2) 3) The diagnostic output is short circuit protected up to VD = 16V Open pins (EN, IN) are detected as low VS = 9 to 16V IOUC IO IOOC
3 2
V V
5/12
L9349
DIAGNOSTIC TABLE
Conditions Normal Function EN L H H GND short Load bypass Open Load VOtyp < 0.55VS L H H X H X H IN X L H X L H X H L H OUT off off on off off on off off off off DIAG. L L H H H L L L H L
VO1-4/2-3 1.25V
IO1,2,3,4typ < 320mA IOmin 1,2 > 5A IOmin 3,4 > 3A channel off channel on
Tjtyp 190C Overtemperature Over Load SGND or PGND loss SGND or PGND loss
CIRCUIT DESCRIPTION The L9349 is a quad low side driver for inductive loads like valves in automotive environment. The internal pull down current sources at the ENable and INput pins assure in case of open input conditions that the device is switched off. An output voltage 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 50 V. Each driver is protected against short circuit at V OUT < 32V and thermal overload. In short circuit condition the output will be disabled after a short delay time tDOL. The thermal disable for TJ > 180C of the output will be reset if the junction temperature decreases about 20C below the disable threshold temperature. The overtemperature, overload and groundloss information is stored until IN is low. 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 (R L 20K, RL > 38) in OFF and ON conditions. Also the output voltages V O1- 4 are compared to each other output in OFF condition with a fixed offset of VOUV to recognize load bypasses. The VOUV diagnoses is suppressed during the flyback phases of the compared output. The outputs 1 and 4 are compared for VOUV and also outputs 2 and 3 are compared. The diagnostic output level in connection with different ENable and INput conditions allows to recognize different fail states, like overtemp, short to VS, short to GND, bypass to GND and disconnected load (see diagnostic table). The diagnostic output is protected against short circuit. Exceeding the over load current threshold IOOC, the output current will be limited internally during the diagnostic overload delay switch-off time tDOL. The device complies the I SO pulses imposed to the supply voltage of the valves without any failures of the functionality. Therefore some diagnostic functions are internal filtered. The following table shows the corresponding filter time for each detected signal.
6/12
L9349
ON State EN and IN = HIGH Overloading of output (also shorted load to supply) Open load (under voltage detection) Open load (under current detection) Overtemperature Power-Signal GND-loss Power- Signal-GND-loss Openload difference X X X X X X X OFF State EN or IN, = LOW min. Filter time 4s 4s 4s 4s 4s INx = "LOW" INx = "LOW" Reset done by
INx = "LOW"
Figure 1. tEO Clamping Time
VO1-4 VOCL
VS tEO T
00AT0027
t
7/12
L9349
Figure 2. Output Slope (resistive load for testing)
VIN VEN 5V VH VL t VOUT tON tOFF
VS 0.85V S VOUV 0.15V S t VDIAG tf VD 0.5V D tr tD H-L Diag
00AT0030
Figure 3. Timing (tDOL, tDIOU)
IN
VON
IOOC IOUC
VD tDIOU
00AT0032
tfilt Open Load Current tDOL
8/12
L9349
Figure 4. Block Diagram - Open Load Voltage Detection
VBatt
L1 (L2) OUT1 (OUT2) OUT4 (OUT3)
L4 (L3)
IN1 RIO VS RIO
IN4
55%
+
+
Enable R Latch Q
S S R Latch Q
00AT0033
VO UV1
VO UV4
9/12
L9349
Figure 5. Logic Diagram
VEN
VIN
VO U
IOO IOU
VD
Normal Operation ON
Open Load Current
Open Load Current Normal Operation ON
Open Load Current
Latch Reset
Latched Over. Load Diagnostic
Open Load Voltage
00AT0034
Figure 6. Application Circuit Diagram
+5V
VCC I/O I/O I/O IN1 D1 EN Channel 1 OUT1 Z VALVE VS +45V 52V Output Control I/O +5V R Q I/O D4 Diagnostic Control Channel 4 I/O I/O +5V IN2 D2 Channel 2 S Delay Time IN4 Overtemp R IO OUT4 Z VALVE VBatt KL30 KL15
Overload
P
Controller +5V Openload
OUT2 Z VALVE
I/O I/O
IN3 D3 Channel 3
OUT3 Z VALVE
GND
00AT0035
GND
10/12
Open Load Voltage
Normal Operation OFF
L9349
mm MIN. 0.1 0 0.4 0.23 15.8 9.4 13.9 1.27 11.43 10.9 5.8 0 15.5 0.8 11.1 2.9 6.2 0.1 15.9 1.1 1.1 0.031 8 (typ.) 8 (max.) 10 0.394 0.228 0.000 0.610 0.429 TYP. MAX. 3.6 0.3 3.3 0.1 0.53 0.32 16 9.8 14.5 0.000 0.016 0.009 0.622 0.370 0.547 0.050 0.450 0.437 0.114 0.244 0.004 0.626 0.043 0.043 JEDEC MO-166 0.004 MIN. inch TYP. MAX. 0.142 0.012 0.130 0.004 0.021 0.013 0.630 0.386 0.570
Weight: 1.9gr
DIM. A a1 a2 a3 b c D (1) D1 E e e3 E1 (1) E2 E3 G H h L N S T
OUTLINE AND MECHANICAL DATA
(1) "D and E1" do not include mold flash or protusions. - Mold flash or protusions shall not exceed 0.15mm (0.006") - Critical dimensions: "E", "G" and "a3".
PowerSO20
N
N a2 b e A
R
c DETAIL B a1 E DETAIL A
DETAIL A e3 H
lead
D a3 DETAIL B
20 11
Gage Plane 0.35
slug
-C-
S E2 T E1 BOTTOM VIEW
L
SEATING PLANE G C
(COPLANARITY)
E3
1 10
h x 45
PSO20MEC
D1
0056635
11/12
L9349
Information furnished is believed to be accurate and reliable. However, STMicroelectronics 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 STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics (c) 2002 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com
12/12

▲Up To Search▲

Price & Availability of L9349

	To Download L9349 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .