VN31_04

VN31 ISO HIGH SIDE SMART POWER SOLID STATE RELAY Table 1. General Features Type VN31 VDSS 60 V RDS(on) 0.03 Ω In (1) 11.5 A VCC 26 V Figure 1. Package Note: 1. In= Nominal current according to ISO definition for high side automotive switch. The Nominal Current is the current at Tc = 85 °C for battery voltage of 13V which produces a voltage drop of 0.5 V. ■ MAXIMUM CONTINUOUS OUTPUT CURRENT (note 2): 31 A @ Tc= 85°C 5V LOGIC LEVEL COMPATIBLE INPUT THERMAL SHUT-DOWN UNDER VOLTAGE PROTECTION OPEN DRAIN DIAGNOSTIC OUTPUT INDUCTIVE LOAD FAST DEMAGNETIZATION VERY LOW STAND-BY POWER DISSIPATION PENTAWATT (vertical) PENTAWATT (horizontal) ■ ■ ■ ■ ■ ■ Note: 2. The maximum continuous output current is the current at Tc = 85 °C for a battery voltage of 13 V which does not activate self protection. PENTAWATT (in-line) DESCRIPTION The VN31 is a monolithic device made using STMicroelectronics VIPower Technology, intended for driving resistive or inductive loads with one side grounded. Built-in thermal shut-down protects the chip from over temperature and short circuit. The open drain diagnostic output indicates: open load in off state and in on state, output shorted to VCC and overtemperature. Fast demagnetization of inductive loads is achieved by negative (-18V) load voltage at turn-off. Table 2. Order Codes Package PENTAWATT Vert. PENTAWATT Hor. PENTAWATT In line Tube VN31 VN31(011Y) VN31(012Y) Tape and Reel - REV. 2 June 2004 1/13 VN31 Figure 2. Block Diagram Table 3. Absolute Maximum Ratings Symbol V(BR)DSS IOUT IR IIN – VCC ISTAT VESD Ptot Tj Tstg Parameter Drain-Source Breakdown Voltage Output Current (cont.) at Tc = 85 °C Reverse Output Current at Tc = 85 °C Input Current Reverse Supply Voltage Status Current Electrostatic Discharge (1.5 kΩ, 100 pF) Power Dissipation at Tc = 85 °C Junction Operating Temperature Storage Temperature Value 60 31 –31 ±10 –4 ±10 2000 54 -40 to 150 -55 to 150 Unit V A A mA V mA V W °C °C 2/13 VN31 Figure 3. Connection Diagram Figure 4. Current and Voltage Conventions Table 4. Thermal Data Symbol Rthj-case Rthj-amb Parameter Thermal Resistance Junction-case Thermal Resistance Junction-ambient Max Max Value 1.2 60 Unit °C/W °C/W 3/13 VN31 ELECTRICAL CHARACTERISTICS (VCC = 13 V; –40 ≤ Tj ≤ 125 °C unless otherwise specified) Table 5. Power Symbol VCC In (3) Parameter Supply Voltage Nominal Current On State Resistance Supply Current Maximum Voltage Drop Test Conditions Tc = 85 °C; VDS(on) ≤ 0.5 IOUT = 11.5 A IOUT = 11.5 A; Tj = 25 °C Off State; Tj ≥ 25 °C On State IOUT = 25 A; Tc = 85 °C Min. 5.5 11.5 Typ. 13 Max. 26 Unit V A Ω Ω µA mA V Ron IS VDS(MAX) 0.06 0.03 50 15 1.5 Note: 3. In= Nominal current according to ISO definition for high side automotive switch The Nominal Current is the current at Tc = 85 °C for battery voltage of 13V which produces a voltage drop of 0.5 V. Table 6. Switching Symbol td(on) (4) Parameter Turn-on Delay Time Of Output Current Rise Time Of Output Current Turn-off Delay Time Of Output Current Fall Time Of Output Current Turn-on Current Slope Turn-off Current Slope Inductive Load Clamp Voltage Test Conditions IOUT = 11.5 A; Resistive Load Input Rise Time < 0.1 µs IOUT = 11.5 A; Resistive Load Input Rise Time < 0.1 µs IOUT = 11.5 A; Resistive Load Input Rise Time < 0.1 µs IOUT = 11.5 A; Resistive Load Input Rise Time < 0.1 µs IOUT = 11.5 A IOUT = IOV IOUT = 11.5 A IOUT = IOV IOUT = 11.5 A; L = 1 mH Min. Typ. 90 100 140 50 0.08 0.2 Max. Unit µs µs µs µs tr(4) td(off)(4) tf(4) (di/dt)on (di/dt)off Vdemag 0.5 1 3 3 –14 A/µs A/µs A/µs A/µs V –24 –18 Note: 4. See Switching Time Waveforms. Table 7. Logic Input Symbol VIL VIH VI(hyst) IIN Parameter Input Low Level Voltage Input High Level Voltage Input Hysteresis Voltage Input Current VIN = 5 V VIN = 2 V VIN = 0.8 V IIN = 10 mA IIN = –10 mA 2 0.5 250 25 5.5 6 –0.7 –0.3 500 250 Test Conditions Min. Typ. Max. 0.8 Note 5 Unit V V V µA µA µA V V VICL Input Clamp Voltage Note: 5. The VIH is internally clamped at 6V about. It is possible to connect this pin to an higher voltage via an external resistor calculated to not exceed 10 mA at the input pin. 4/13 VN31 ELECTRICAL CHARACTERISTICS (cont’d) Table 8. Protection and Diagnostics Symbol VSTAT VUSD VSCL IOV IAV IOL TTSD TR VOL(6) t1(on)(7) t1(off)(7) t2(off)(7) tpovl(7) tpol(7) Parameter Status Voltage Output Low Under Voltage Shut Down Status Clamp Voltage Over Current Average Current in Short Circuit Open Load Current Level Thermal Shut-down Temperature Reset Temperature Open Load Voltage Level Open Load Filtering Time Open Load Filtering Time Open Load Filtering Time Status Delay Status Delay 50 Off-State ISTAT = 10 mA ISTAT = –10 mA RLOAD < 10 mΩ; –40 ≤ Tc ≤ 125 °C RLOAD < 10 mΩ; Tc = 85 °C 5 140 125 2.5 1 1 1 3.75 5 5 5 5 700 5 10 10 10 10 Test Conditions ISTAT = 1.6 mA 5 6 –0.7 140 2.5 600 1250 Min. Typ. Max. 0.4 Unit V V V V A A mA °C °C V ms ms ms µs µs Note: 6. IOL(off) = (VCC -VOL)/ROL (see figure 5). 7. t1(on): minimum open load duration which activates the status output; t1(off): minimum load recovery time which desactivates the status output; t2(off): minimum on time after thermal shut down which desactivates status output; tpovl tpol: ISO definition (see figure 6). Figure 5. Note 6 relevant figure Figure 6. Note 7 relevant figure 5/13 VN31 Figure 7. Switching Time Waveforms device ensures the fast demagnetization with a typical voltage (Vdemag) of -18V. This function allows to greatly reduce the power dissipation according to the formula: Pdem = 0.5 • Lload • (Iload)2 • [(VCC+Vdemag)/ Vdemag] • f where f = switching frequency and Vdemag = demagnetization voltage Based on this formula it is possible to know the value of inductance and/or current to avoid a thermal shut-down. The maximum inductance which causes the chip temperature to reach the shut down temperature in a specific thermal environment, is infact a function of the load current for a fixed VCC, Vdemag and f. PROTECTING THE DEVICE AGAIST LOAD DUMP - TEST PULSE 5 The device is able to withstand the test pulse No. 5 at level II (Vs = 46.5V) according to the ISO T/R 7637/1 without any external component. This means that all functions of the device are performed as designed after exposure to disturbance at level II. The VN31 is able to withstand the test pulse No.5 at level III adding an external resistor of 150 ohm between pin 1 and ground plus a filter capacitor of 1000 µF between pin 3 and ground (if RLOAD ≤ 20 Ω). PROTECTING THE DEVICE AGAINST REVERSE BATTERY The simplest way to protect the device against a continuous reverse battery voltage (-26V) is to insert a Schottky diode between pin 1(GND) and ground, as shown in the typical application circuit (Figure 10). The consequences of the voltage drop across this diode are as follows: – If the input is pulled to power GND, a negative voltage of -Vf is seen by the device. (VIL, VIH thresholds and VSTAT are increased by Vf with respect to power GND). – The undervoltage shutdown level is increased by Vf. If there is no need for the control unit to handle external analog signals referred to the power GND, the best approach is to connect the reference potential of the control unit to node [1] (see application circuit in Figure 11), which becomes the common signal GND for the whole control board avoiding shift of VIH, VIL and VSTAT. This solution allows the use of a standard diode. FUNCTIONAL DESCRIPTION The device has a diagnostic output which indicates open load conditions in off state as well as in on state, output shorted to VCC and overtemperature. The truth table shows input, diagnostic and output voltage level in normal operation and in fault conditions. The output signals are processed by internal logic. The open load diagnostic output has a 5 ms filtering. The filter gives a continuous signal for the fault condition after an initial delay of about 5 ms. This means that a disconnection during normal operation, with a duration of less than 5 ms does not affect the status output. Equally, any reconnection of less than 5 ms during a disconnection duration does not affect the status output. No delay occur for the status to go low in case of overtemperature conditions. From the falling edge of the input signal the status output initially low in fault condition (over temperature or open load) will go back with a delay (tpovl)in case of overtemperature condition and a delay (tpol) in case of open load. These feature fully comply with International Standard Office (I.S.O.) requirement for automotive High Side Driver. To protect the device against short circuit and over current conditions, the thermal protection turns the integrated Power MOS off at a minimum junction temperature of 140 °C. When the temperature returns to 125 °C the switch is automatically turned on again. In short circuit the protection reacts with virtually no delay, the sensor being located in the region of the die where the heat is generated. Driving inductive loads, an internal function of the 6/13 VN31 Table 9. Truth Table Input Normal Operation Open Circuit (No Load) Over-temperature Under-voltage Short load to VCC L H H H X L Output L H H L L H Diagnostic H H L L H L Figure 8. Waveforms Figure 9. Over Current Test Circuit 7/13 VN31 Figure 10. Typical Application Circuit With A Schottky Diode For Reverse Supply Protection Figure 11. Typical Application Circuit With Separate Signal Ground 8/13 VN31 PACKAGE MECHANICAL Table 10. PENTAWATT (vertical) Mechanical Data Symbol A C D D1 E F F1 G G1 H2 H3 L2 L3 L5 L6 L7 Dia. 10.05 23.05 25.3 2.6 15.1 6 3.65 23.4 25.65 2.4 1.2 0.35 0.8 1 3.2 6.6 3.4 6.8 millimeters Min Typ Max 4.8 1.37 2.8 1.35 0.55 1.05 1.4 3.6 7 10.4 10.4 23.8 26.1 3 15.8 6.6 3.85 Figure 12. PENTAWATT (vertical) Package Dimensions Note: Drawing is not to scale. 9/13 VN31 Table 11. PENTAWATT (horizontal) Mechanical Data Symbol A C D D1 E F F1 G G1 H2 H3 L L1 L2 L3 L5 L6 L7 Dia. 10.05 14.2 5.7 14.6 3.5 2.6 15.1 6 3.65 2.4 1.2 0.35 0.8 1 3.2 6.6 3.4 6.8 millimeters Min Typ Max 4.8 1.37 2.8 1.35 0.55 1.05 1.4 3.6 7 10.4 10.4 15 6.2 15.2 4.1 3 15.8 6.6 3.85 Figure 13. PENTAWATT (horizontal) Package Dimensions Note: Drawing is not to scale. 10/13 VN31 Table 12. PENTAWATT (in-line) Mechanical Data Symbol A C D D1 E F F1 G G1 H2 H3 L2 L3 L5 L6 L7 Dia. 10.05 23.05 25.3 2.6 15.1 6 3.65 23.4 25.65 2.4 1.2 0.35 0.8 1 3.2 6.6 3.4 6.8 millimeters Min Typ Max 4.8 1.37 2.8 1.35 0.55 1.05 1.4 3.6 7 10.4 10.4 23.8 26.1 3 15.8 6.6 3.85 Figure 14. PENTAWATT (in-line) Package Dimensions Note: Drawing is not to scale. 11/13 VN31 REVISION HISTORY Table 13. Revision History Date September-1994 18-June-2004 Revision 1 2 First Issue Stylesheet update. No content change. Description of Changes 12/13 VN31 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. All other names are the property of their respective owners © 2004 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 www.st.com 13/13