L9349 QUAD INTELLIGENT POWER LOW SIDE SWITCH ■ ■ ■ ■ ■ ■ ■ Quad power low side driver with 2 x 5A and 2 x 3A output current capability Low RDSON typically 200mΩ and 300mΩ @ Tj = 25°C Internal output clamping structures with VFB = 50V for fast inductive load current recirculation Limited output voltage slew rate for low EMI Protected µP compatible enable and input Wide operating supply voltage range 4.5V to 32V Real time diagnostic functions: – Output shorted to GND PowerSO20 BARE DIE ORDERING NUMBERS: L9349 L9349DIE1 – Output shorted to VSS ■ – Open load detection in ON and OFF condition DESCRIPTION – Load bypass detection 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. – Overtemperature detection Device protection functions: – Overload disable The inputs are µP compatible. Particular care has been taken to protect the device against failures, to avoid electromagnetic interferences and to offer extensive real time diagnostic. – Selective thermal shutdown ■ Signal- and Power-Ground-loss shutdown BLOCK DIAGRAM IN1 D1 Channel 1 OUT1 EN VS 52V Output Control OUT4 IN4 Overtemp R Q S Delay Time R IO Overload D4 Diagnostic Control Openload Channel 4 IN2 D2 Channel 2 OUT2 IN3 D3 Channel 3 OUT3 00AT0025 September 2002 GND 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 00AT0026 PIN DESCRIPTION N° Pin 1 PGND Power Ground 2 Out1 Output 1 (5A) 3 D1 Diagnostic 1 4 IN4 Input 4 5 VS Supply Voltage 6 NC Not Connected 7 IN3 Input 3 8 D2 Diagnostic 2 9 Out2 Output 2 (5A) 10 PGND Power Ground 11 PGND Power Ground 12 Out3 Output 3 (3A) 13 D3 Diagnostic 3 14 IN2 Input 2 15 GND 16 EN Common Enable 17 IN1 Input 1 18 D4 Diagnostic 4 19 Out4 Output 4 (3A) 20 PGND Power Ground 2/12 Function Signal Ground PGND OUT4 D4 IN1 EN GND IN2 D3 OUT3 PGND L9349 THERMAL DATA Symbol RTh j-case Parameter Thermal resistance junction to case Value Unit 3 °C/W ABSOLUTE MAXIMUM RATINGSI Symbol Parameter Conditions Unit VS DC Supply Voltage -0.3 to 32 V VSP Supply Voltage Pulse (duration <200ms) -0.3 to 45 V 10 V/µs dVS/dt VIN, EN VD Supply Voltage Slope Input Voltage I10mA -1.5 to 6 V Diagnostic DC Output Voltage I 50mA -0.3 to 16 V -0.3 to 45 V VODC DC Output Voltage IO1, 2 DC Output Current Out 1, 2 5 A IO3, 4 DC Output Current Out 3, 4 3 A IOR1, 2 Reverse Output Current -5 A IOR3, 4 Reverse Output Current -3 A EO1, 2 Switch-off Energy for Inductive Loads tEO = 250µs,1) 50 mJ T = 5ms 30 mJ Tj = -40 to 150°C ±0.3 V Σt ≤ 30 min 175 °C Σt ≤ 15 min 190 °C EO3, 4 ∆VGND TjEO 1) Value GND Potential Difference Junction Temperature During Switch-off Tj Junction Temperature -40 to TjDIS °C Tstg Storage Temperature -55 to 150 °C TjDIS Thermal Disable Junction Temp. Threshold ESD Electrostatical Discharging ESD OUT1 - 4 180 to 210 °C MIL883C +-2 kV vs. Common-GND (PGNDs + GND) +-4 kV 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 1) Parameter Test Condition Min. Typ. Max. Unit 12 32 V VS Board Supply Voltage 4.5 Tj1 Junction Temperature -40 150 °C Tj2 Junction Temperature 150 TjDIS °C Σt ≤ 15min 1) over life time Parameters guaranteed by correlation 3/12 L9349 ELECTRICAL CHARACTERISTICS (VS = 4.5 to 32V; -40°C ≤ Tj1 ≤ 150°C < Tj2 ≤ TjDIS, unless other-wise specified.) Values Tj2 Values Tj1 Symbol Parameter Test Conditions Unit Min. Typ. Max. 10 Min. Max. Supply IVS OFF DC Supply Current Off EN = 1.0V 5 IVS ON DC Supply Current On VS ≤ 14V; VIN, VEN = 2V 8 mA mA Diagnostic Outputs D1 - D4 VDL Diagnostic Output Low ID ≤ 3mA Voltage 0.65 1.0 1.5 V IDLE Diagnostic Output Leakage Current VD = 14V 1) 0.1 2 20 µA RDSON 1, 2 Output On Resistance Tj = 25°C Tj = 150°C VS > 9.5V IO1,2 = 2A 200 300 500 mΩ RDSON 3, 4 Tj = 25°C Tj = 150°C VS > 9.5V IO3,4 = 1.3A 300 450 750 mΩ V Outputs Out 1 - Out 4 VZ Z-diode clamping voltage IOCL ≥ 200mA 45 60 RO Output pull down resistor VS > 9.5V EN = 0V 10 40 Open Load Voltage Threshold VIN = 1V VOUV 1-4 0.525 x VS VOUV hys 1- Hysteresis ∆VOUV 1-4, Open Load Difference Voltage Threshold 0.575 x VS 0.003 x VS 4 2-3, 4-1, 3-2 0.55 x VS VIN1,4/2,3 = 1V VS ≤ 16V VOc Š 4.5V VOC = output voltage of other channel VOC 1.0V ∆VOUV hys Open Load Hysteresis VOC 1.25V 50 kΩ V V VOC 1.5V 40 V mV 1-4, 2-3, 4-1, 3-2 IOUC 1, 2, 3, 4 IOOC 1, 2 IOOC 3, 4 Open Load Current Threshold VEN=VIN=2V; VS=6.5 - 16V Over Load Current Threshold VS > 6.5V; VOUT = 32V TSD Thermal Shut Down TSD-hys Thermal Shut Down hysteresis 4/12 160 320 5 10 A 3 6 A 180 195 20 480 210 mA °C °C L9349 ELECTRICAL CHARACTERISTICS (continued) (VS = 4.5 to 32V; -40°C ≤ Tj1 ≤ 150°C < Tj2 ≤ TjDIS, unless other-wise specified.) Values Tj2 Values Tj1 Symbol Parameter Test Conditions Unit Min. IOUT-LE OUT leakage current Typ. Max. Min. Max. 5 µA -0.3 1 V 2.0 6 V VOUT = 20V VS = 0V Inputs IN1-4, EN VIN,EN L Logic Input/Enable Low Voltage VIN,EN H Logic Input/Enable High Voltage VEN,IN hys IN, EN Logic Input Hysteresis IIN Input Sink Current IEN Enable Sink Current 2V < VIN, VEN < 6V 2) VIN, VEN < Vs 50 100 mV 10 20 40 µA 10 20 40 µA 4 25 µs Timing tON Output Delay ON Time IO = 1A VS = 12V 3)) Fig. 2 tf,r Output fall and rise time IO = 1A VS = 12V Fig. 2 3 10 30 µs tOFF Output Delay OFF Time IO = 1A VS = 12V 5 15 30 µs tDH-L, Diag tD IOU tDOL tfilt 3) Fig. 2 Diag. Delay Output OFF Time 3) Fig. 2 Diagnostic Open Load Delay Time 9V< VS <16V, Fig 3 Diagnostic Overload Delay Switch-OFF Time 9V< VS <16V, Fig 3 Filter time 8 65 90 µs 50 µs 6 65 µs 4 24 µs 8 PGND PGNDloss,h Power GND loss threshold high 3 V PGNDloss,l Power GND loss threshold low 2 V 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 5/12 L9349 DIAGNOSTIC TABLE Conditions EN IN OUT DIAG. Normal Function L X off L H L off L H H on H GND short VOtyp < 0.55VS L X off H Load bypass ∆VO1-4/2-3 ≥ 1.25V H L off H Open Load IO1,2,3,4typ < 320mA H H on L X X off L H H off L Tjtyp ≥ 190°C Overtemperature Over Load IOmin 1,2 > 5A IOmin 3,4 > 3A SGND or PGND loss channel off X L off H SGND or PGND loss channel on H H off L 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 > 180°C of the output will be reset if the junction temperature decreases about 20°C 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 ≥ 20KΩ, RL > 38Ω) 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) OFF State EN or IN, = LOW X Open load (under voltage detection) X min. Filter time Reset done by 4µs INx = “LOW” - Open load (under current detection) X - Overtemperature X 4µs INx = “LOW” Power-Signal GND-loss X 4µs INx = “LOW” Power- Signal-GND-loss X 4µs Openload difference X 4µs Figure 1. tEO Clamping Time VO1-4 VOCL VS t tEO T 00AT0027 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 tr tD H-L Diag VD 0.5V D 00AT0030 Figure 3. Timing (tDOL, tDIOU) IN VON IOOC IOUC VD tfilt tDIOU 00AT0032 8/12 Open Load Current tDOL L9349 Figure 4. Block Diagram - Open Load Voltage Detection VBatt L1 (L2) OUT1 (OUT2) L4 (L3) OUT4 (OUT3) IN1 IN4 RIO RIO VS 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 Open Load Voltage Normal Operation OFF Open Load Voltage Open Load Current Normal Operation ON Latch Reset Latched Over. Load Diagnostic Open Load Current 00AT0034 Normal Operation ON Open Load Current VD Figure 6. Application Circuit Diagram +5V VCC I/O IN1 I/O D1 I/O EN OUT1 Channel 1 Z VALVE KL15 VS +45V 52V IN4 Overtemp +5V R Q I/O D4 µP Controller S Delay Time Diagnostic Control +5V KL30 OUT4 Output Control I/O Z VALVE R IO Overload Openload Channel 4 I/O IN2 I/O D2 Channel 2 OUT2 Z VALVE +5V GND 00AT0035 10/12 I/O IN3 I/O D3 Channel 3 OUT3 Z VALVE GND VBatt L9349 DIM. mm MIN. TYP. A a1 inch MAX. MIN. TYP. 3.6 0.1 0.142 0.3 a2 0.004 0.012 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 0.386 D1 9.4 9.8 0.370 E 13.9 14.5 0.547 e 1.27 e3 E1 (1) 0.570 0.450 11.1 E2 0.429 0.437 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 h L 0.626 1.1 0.8 JEDEC MO-166 0.043 1.1 N Weight: 1.9gr 0.050 11.43 10.9 OUTLINE AND MECHANICAL DATA MAX. 0.031 0.043 8˚ (typ.) S 8˚ (max.) T 10 0.394 PowerSO20 (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”. N R N a2 b A e DETAIL A c a1 DETAIL B E e3 H DETAIL A lead D slug a3 DETAIL B 20 11 0.35 Gage Plane -C- S SEATING PLANE L G E2 E1 BOTTOM VIEW C (COPLANARITY) T E3 1 h x 45 10 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. 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