VN751STR

VN751S High-side driver Datasheet - production data Description The VN751S is a monolithic device developed using STMicroelectronics' VIPower technology, intended to drive any kind of load with one side connected to ground. Active VCC pin voltage clamp protects the device against low energy spikes. Active current limitation combined with thermal shutdown and automatic restart protect the device against overload. The device automatically turns off in case of ground pin disconnection. This device is especially suitable for industrial applications in conformity with IEC 61131-2 programmable controller international standard. 40 Features  RDS(on): 60 m  IOUT: 2.5 A  VCC: 36 V  CMOS compatible input Table 1. Device summary Order code  Thermal shutdown VN751S  Shorted load protection  Undervoltage and overvoltage shutdown VN751STR Package SO-8 Packing Tube Tape and reel  Protection against loss of ground  Very low standby current  Compliance to 61000-4-4 IEC test up to 4 kV  Open drain status output  Fast demagnetization of inductive loads May 2018 This is information on a product in full production. DocID12320 Rev 9 1/22 www.st.com Contents VN751S Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 Switching time waveforms and truth table . . . . . . . . . . . . . . . . . . . . . . 11 7 Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 8 Reverse polarity protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 9 Active VDS clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 10 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 11 2/22 10.1 SO-8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 10.2 SO-8 packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 DocID12320 Rev 9 VN751S List of tables List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Switching (VCC = 24 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Input pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Status pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Truth table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 SO-8 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 SO-8 tape and reel mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 DocID12320 Rev 9 3/22 22 List of figures VN751S List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. 4/22 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Connection diagram (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Current and voltage conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Peak short-circuit current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Avalanche energy test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Switching time waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Reverse polarity protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Active clamp equivalent principle schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Fast demagnetization waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Typical demagnetization energy (single pulse) at VCC = 24 V and TAMB = 125 °C . . . . . . 17 SO-8 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 SO-8 package recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 SO-8 tape and reel dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 DocID12320 Rev 9 VN751S 1 Block diagram Block diagram Figure 1. Block diagram ". DocID12320 Rev 9 5/22 22 Pin connection 2 VN751S Pin connection Figure 2. Connection diagram (top view) ". Figure 3. Current and voltage conventions ". 6/22 DocID12320 Rev 9 VN751S 3 Maximum ratings Maximum ratings Table 2. Absolute maximum ratings Symbol Parameter Value Unit 45 V VCC DC supply voltage -VCC Reverse DC supply voltage -0.3 V -IGND DC reverse ground pin current -200 mA IOUT DC output current Internally limited A -IOUT Reverse DC output current -5 A IIN DC input current -1 to +10 mA ISTAT DC status current -1 to +10 mA VESD Electrostatic discharge (R = 1.5 k; C = 100 pF) 5000 V EAS Single pulse avalanche energy (Tamb = 125 °C, VCC = 24 V, Iload = 2.0 A) 650 mJ PTOT Power dissipation at TC = 25 °C Internally limited W TJ Junction operating temperature Internally limited °C TC Case operating temperature -40 to 150 °C Storage temperature -55 to 150 °C TSTG Table 3. Thermal data Symbol Rth(JC) Rth(JA) Parameter Thermal resistance junction-case Thermal resistance junction-ambient Max. Max. Value Unit 15 °C/W 93(1) 82(2) °C/W 1. When mounted on a standard single-sided FR-4 board with 0.5 cm2 of Cu (at least 35 m) thick connected to all VCC pins. Horizontal mounting and no artificial air flow. 2. When mounted on a standard single-sided FR-4 board with 2 cm2 of Cu (at least 35 m) thick connected to all VCC pins. Horizontal mounting and no artificial air flow. DocID12320 Rev 9 7/22 22 Electrical characteristics 4 VN751S Electrical characteristics 8 V < VCC < 36 V; -40 °C < TJ < 125 °C; unless otherwise specified. Table 4. Power section Symbol VCC Parameter Test conditions Supply voltage Typ. Max. Unit 5.5 - 36 V IOUT = 2 A at TJ = 25 °C - 60 - IOUT = 2 A - - 180 Off-state, VCC = 24 V, TJ = 25 °C - 10 20 µA On-state, VCC = 24 V, TJ = 25 °C - 3.5 - mA On-state, VCC = 24 V, TJ = 100 °C - - 3.8 mA - RDS(on) On-state resistance IS(1) Min. Supply current m VUSD Undervoltage shutdown - 3 4 5.5 V VOV Overvoltage shutdown 36 - - V IL(off) Off-state output current VIN = VOUT = 0 V 0 - 10 µA Min. Typ. Max. Unit - 1. Status: floating. Table 5. Switching (VCC = 24 V) Symbol Parameter Test conditions td(ON) Turn-on delay time RL = 12  from VIN rising edge to VOUT = 2.4 V - 12 - µs td(OFF) Turn-off delay time of output current RL = 12  from VIN falling edge to VOUT = 21.6 V - 35 - µs dVOUT/dt(on) Turn -on voltage slope RL = 12  from VOUT = 2.4 V to VOUT = 19.2 V - 0.80 - dVOUT/dt(off) Turn -off voltage slope RL = 12 from VOUT = 21.6 V to VOUT = 2.4 V - 0.30 - Min. Typ. Max. Unit V/µs Table 6. Input pin Symbol Test conditions VIL Input low level - - - 1.25 V IIL Low level input current VIN = 1.25 V 1 - - µA VIH Input high level - 3.25 - - V IIH High level input current VIN = 3.25 V - - 10 µA 0.5 - VIN = VCC = 5 V - - 10 IIN= 1 mA 6 6.8 8 IIN = -1 mA - -0.7 - Vhyst IIN VICL 8/22 Parameter Input hysteresis voltage Input current Input clamp voltage DocID12320 Rev 9 V µA V VN751S Electrical characteristics Table 7. Status pin Symbol Parameter Test conditions Min. Typ. Max. Unit VSTAT Status low output voltage ISTAT = 1.6 mA - - 0.5 V ILSTAT Status leakage current Normal operation; VSTAT = 5 V - - 10 µA CSTAT Status pin input capacitance Normal operation; VSTAT = 5 V - - 100 V High level input current VIN = 3.25 V - - 10 µA ISTAT = 1 mA 6 6.8 8 ISTAT = -1 mA - -0.7 - IIH VSCL Status clamp voltage V Table 8. Protection Symbol Parameter Test conditions Min. Typ. Max. Unit Turn-off output clamp voltage RL =12 ; L = 6 mH Shutdown temperature - 150 175 200 °C Current limitation VCC = 24 V; RLOAD = 10 m, t = 0.4 ms 2.7 - 6.0 A Thyst Thermal hysteresis - 7 20 - °C TR Reset temperature - 135 - - °C Vdemag TTSD Ilim DocID12320 Rev 9 VCC -47 VCC -52 VCC -57 V 9/22 22 Test circuits 5 VN751S Test circuits Figure 4. Peak short-circuit current Figure 5. Avalanche energy test circuit 10/22 DocID12320 Rev 9 VN751S 6 Switching time waveforms and truth table Switching time waveforms and truth table Figure 6. Switching time waveforms ". Table 9. Truth table Conditions Normal operation Current limitation Overtemperature Undervoltage Overvoltage Input Output Status L L H H H H L L H H X (TJ < TTSD) H H X (TJ > TTSD) L L L H H L L L L X H L X L L H H L H DocID12320 Rev 9 11/22 22 Switching time waveforms and truth table VN751S Figure 7. Waveforms ". 12/22 DocID12320 Rev 9 VN751S 7 Application schematic Application schematic Figure 8. Application schematic DocID12320 Rev 9 13/22 22 Reverse polarity protection 8 VN751S Reverse polarity protection A schematic solution to protect the IC against a reverse polarity condition is proposed. This schematic is effective with any type of load connected to the outputs of the IC. The RGND resistor value can be selected according to the following conditions: Equation 1 RGND  600 mV / (IS in ON-state max.) Equation 2 RGND  (-VCC) / (-IGND) where -IGND is the DC reverse ground pin current and can be found in Section 3: Maximum ratings on page 7. The power dissipation associated to RGND during reverse polarity condition is: Equation 3 PD = (-VCC)2 / RGND This resistor can be shared by several different ICs. In such case IS value in Equation 1 is the sum of the maximum ON-state currents of the different devices. Please note that if the microprocessor ground and the device ground are separated, the voltage drop across the RGND (given by IS in ON-state max. * RGND) produces a difference between the generated input level and the IC input signal level. This voltage drop varies depending on how many devices are ON in case of several high-side switches sharing the same RGND. Figure 9. Reverse polarity protection ". 14/22 DocID12320 Rev 9 VN751S 9 Active VDS clamp Active VDS clamp The active clamp is also known as the fast demagnetization of inductive loads or fast current decay. When a high-side driver turns off an inductance, an undervoltage is detected on the output. The OUT pin is pulled down to Vdemag. The conduction state is modulated by internal circuitry in order to keep the OUT pin voltage at about Vdemag until the load energy has been dissipated. The energy is dissipated both in the IC internal switch and in load resistance. Figure 10. Active clamp equivalent principle schematic "11-*$"5*0/

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1-"/& (/% ". DocID12320 Rev 9 15/22 22 Active VDS clamp VN751S Figure 11. Fast demagnetization waveforms *065 U 0/ _ *-0"% U %&."( U 7065 _ 7$$ U 7$$ 7%&."( 7*/ _ U ". The demagnetization of the inductive load causes a huge electrical and thermal stress to the IC. The curve plotted in Figure 12 shows the maximum demagnetization energy that the IC can support in a single demagnetization pulse with VCC = 24 V and TAMB = 125 °C. If higher demagnetization energy is required then an external free-wheeling Schottky diode has to be connected between OUT (cathode) and GND (anode) pins. Note that in this case the fast demagnetization is inhibited. 16/22 DocID12320 Rev 9 VN751S Active VDS clamp Figure 12. Typical demagnetization energy (single pulse) at VCC = 24 V and TAMB = 125 °C                   *-0"%