ST VN31 handbook
Contents
1. SZA VN31 ISO HIGH SIDE SMART POWER SOLID STATE RELAY MAXIMUM CONTINUOUS OUTPUT CURRENT note 2 31 A To 85 C m 5V LOGIC LEVEL COMPATIBLE INPUT PENTAWATT PENTAWATT THERMAL SHUT DOWN vertical horizontal m UNDER VOLTAGE PROTECTION m OPEN DRAIN DIAGNOSTIC OUTPUT m INDUCTIVE LOAD FAST DEMAGNETIZATION m VERY LOW STAND BY POWER DISSIPATION 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 Table 1 General Features Figure 1 Package Type Voss Rpson In Vcc VN31 60 V 0 039 11 5A 26V 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 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 Tube Tape and Reel PENTAWATT Vert VN31 PENTAWATT Hor VN312. ky ya VN31 Table 11 PENTAWATT horizontal Mechanical Data millimeters Symbol Min Typ A p c ERN D1 1 2 E 0 35 F 0 8 F1 1 G 3 2 3 4 G1 6 6 6 8 H2 H3 10 05 L 14 2 Figure 13 PENTAWATT horizontal Package Dimensions a M Ss 9 Note Drawing is not to scale 4 10 13 VN31 Table 12 PENTAWATT in line Mechanical Data millimeters Symbol Min Typ Max A C D 2 4 D1 1 2 0 35 F 0 8 F1 1 G 3 2 G1 6 6 H2 H3 10 05 L2 23 05 L3 25 3 L5 2 6 L6 15 1 L7 6 Dia 3 65 Figure 14 PENTAWATT in line Package Dimensions Note Drawing is not to scale Lyr 11 13 VN31 REVISION HISTORY Table 13 Revision History Date Revision Description of Changes September 1994 18 June 2004 2 First Issue Stylesheet update No content change 12 13 4 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 r
3. Vin 5V 250 500 uA Vin 2V 250 uA Vin 0 8 V 25 uA VicL Input Clamp Voltage ln 10 mA 5 5 6 V lin 2 10 mA 0 7 0 3 V Note 5 The Viu 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 4 VN31 ELECTRICAL CHARACTERISTICS cont d Table 8 Protection and Diagnostics Symbol Parameter Test Conditions Min Typ Max Unit Vetat Status Voltage Output Low Istat 1 6 mA 0 4 V Vuspb Under Voltage Shut Down 5 V VscL Status Clamp Voltage Istar 10 mA 6 V Istar 10 mA 0 7 V lov Over Current RLoAD lt 10 mQ 40 lt Tc lt 125 C 140 A lav Average Current in Short Circuit RLoap lt 10 mQ Tc 85 C 2 5 A loL Open Load Current Level 5 600 1250 mA TrsD Thermal Shut down Temperature 140 C TR Reset Temperature 125 C Voi 9 Open Load Voltage Level Off State 25 3 75 5 V tifon Open Load Filtering Time 1 5 10 ms ticot Open Load Filtering Time 1 5 10 ms te or Open Load Filtering Time 1 5 10 ms tpovi Status Delay 5 10 us tpo Status Delay 50 700 us Note 6 lOL of Vcc VoL Rox see figure 5 7 t1 on minimum open load duration which activates the status output ti oft minimum load recovery time which desactivates the status output t2 off minimum on time after thermal shut down which desactivates status output
4. exposure to disturbance at level Il 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 uF between pin 3 and ground if Rj oAp x 20 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 Vi VIH thresholds and Vstat are increased by Vr with respect to power GND The undervoltage shutdown level is increased by Vt 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 Vin Vit and Vstat This solution allows the use of a standard diode y VN31 Table 9 Truth Table Input Output Diagnostic Normal Operation L L H H H H Open Circuit No Load H H L Over temperature H L L Under volta
5. 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 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 Lioaq lica Vcc Vaemag 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 Vaemag and f PROTECTING THE DEVICE AGAIST LOAD DUMP TEST PULSE 5 The device is able to withstand the test pulse No 5 at level Il 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
6. tpovi tpor ISO definition see figure 6 Figure 5 Note 6 relevant figure Figure 6 Note 7 relevant figure C06370 Input voltage 0 8V Fault voltage 0 8V 0058 T tpl or SCO6380 tpovi q 5 13 VN31 Figure 7 Switching Time Waveforms Toad 4 90 input 4 lty on NES off s 1 SCO6480 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 filler 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 re connection 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 tpovi in case of overtemperature condition and a delay tpoi in case of open load These feature
7. 011Y PENTAWATT In line VN31 012Y REV 2 June 2004 1 13 VN31 Figure 2 Block Diagram Vee 3 UNDER 4 VOLTAGE INPUT CHARGE A 2 f LOGIC BUMP D 5 OUT j OV Ti OVER OPEN LOAD ON FILTER STATUS 4 L DEY T7 7 OPEN LOAD STATUS k OFF 1 SC06270 GROUND Table 3 Absolute Maximum Ratings Symbol Parameter Value Unit V BR DSS Drain Source Breakdown Voltage 60 V louT Output Current cont at Te 85 C 31 A IR Reverse Output Current at Tc 85 C 31 A lin Input Current 10 Vcc Reverse Supply Voltage 4 V ISTAT Status Current 10 mA VEsD Electrostatic Discharge 1 5 kQ 100 pF 2000 V Pa Power Dissipation at To 85 C 54 Tj Junction Operating Temperature 40 to 150 C Tstg Storage Temperature 55 to 150 C 2 13 VN31 Figure 3 Connection Diagram OUTPUT STATUS Vcc INPUT GROUND PC10000 Figure 4 Current and Voltage Conventions lec liN LN 2 INPUT CC laut gt OUTPUT Wee Vin 4 STATUS GROUND VsTAT Vour SCO4660 Table 4 Thermal Data Symbol Parameter Value Unit Rithj case Thermal Resistance Junction case Max 1 2 C W Rthj amb Thermal Resistance Junction ambient Max 60 q 3 13 VN31 ELECTRICAL CHARACTERISTICS
8. Voc 13 V 40 x Tj x 125 C unless otherwise specified Table 5 Power Test Conditions Min Typ Max 5 5 Supply Voltage Nominal Current On State Resistance Tc 85 C Vps on lt 0 5 lour 11 5 A lour 11 5 A Tj 25 C 11 5 Supply Current Vps MAX Maximum Voltage Drop Off State Tj gt 25 C On State lout 25 A Tc 85 C Note 3 In Nominal current according to ISO definition for high side automotive switch The Nominal Current is the current at Te 85 C for battery voltage of 13V which produces a voltage drop of 0 5 V Table 6 Switching td on Turn on Delay Time Of Output Current u Rise Time Of Output Current lout 11 5 A Resistive Load Input Rise Time 0 1 us lout 11 5 A Resistive Load Input Rise Time 0 1 us 4 Turn off Delay Time Of Output Current u Fall Time Of Output Current lout 11 5 A Resistive Load Input Rise Time 0 1 us lour 11 5 A Resistive Load Input Rise Time 0 1 us Turn on Current Slope di dt of Turn off Current Slope lour 11 5 A lout lov louT 11 5A lout lov Vdemag Inductive Load Clamp lout 11 5 A L 1 mH 24 18 14 V Voltage Note 4 See Switching Time Waveforms Table 7 Logic Input Symbol Parameter Test Conditions Min Typ Max Unit VIL Input Low Level Voltage Vin Input High Level Voltage Vi hyst Input Hysteresis Voltage lin Input Current
9. eplaces 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 ki 13 13
10. ge X L H Short load to Vcc L H L Figure 8 Waveforms OPEN LOAD NORMAL OPERATION Input _ Input load current status Il d l status TT j on delta tc t1on le switsh off l PAi tott tion _ gt e I pol t1 on 4d delta t lt F1 on gt e switch loul CS a a a on off THERMAL SHUTDOWN UNDER VOLTAGE Input input dg load 5 current m f f E i status Ttsd CAES AM CES Gag cee Ne J switc n delta t t 2off povl status M oo Lp out switch on off LLP 1 TL DT LLL SC06450 Figure 9 Over Current Test Circuit nom 100A SC04710 q 7 13 VN31 Figure 10 Typical Application Circuit With A Schottky Diode For Reverse Supply Protection Schottky Diode SC04671 POWER GND Figure 11 Typical Application Circuit With Separate Signal Ground od Ver 10K STATUS CONTROL UNIT SC06051 POWER GND ky 8 13 VN31 PACKAGE MECHANICAL Table 10 PENTAWATT vertical Mechanical Data millimeters Symbol Min A C D 24 D1 1 2 0 35 0 8 F1 1 G 3 2 G1 6 6 H2 H3 10 05 L2 23 05 L3 25 3 L5 2 6 L6 15 1 L7 6 Figure 12 PENTAWATT vertical Package Dimensions Note Drawing is not to scale
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ST VN31 handbook