VB027SP-E

VB027SP-E High voltage ignition coil driver power integrated circuit Type Vcl Icl Id(on) VB027SP-E 300 V 9A 130 mA Features  ■ ECOPACK®: lead free and RoHS compliant ■ Automotive Grade: compliance with AEC guidelines  ("1($'5 PowerSO-10 ■ Primary coil voltage internally set ■ Coil current limit internally set ■ Logic level compatible input Description ■ Driving current quasi proportional to collector current ■ Double flag-on coil current The VB027SP-E is a high voltage power integrated circuit made using the STMicroelectronics™ VIPower™ technology, with vertical current flow power darlington and logic level compatible driving circuit. Built-in protection circuit for coil current limiting and collector voltage clamping allows the device to be used as smart, high voltage, high current interface in advanced electronic ignition system. Table 1. Device summary Order code Package PowerSO-10 May 2011 Doc ID 018828 Rev 1 Tube Tape and reel VB027SP-E VB027SPTR-E 1/14 www.st.com 1 Contents VB027SP-E Contents 1 Block diagram and pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 4 5 2/14 2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.4 Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.1 Principle of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.2 Thermal behaviour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.3 Overvoltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Package and packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.1 ECOPACK® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.2 PowerSO-10 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Doc ID 018828 Rev 1 VB027SP-E List of tables List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Pin function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 PowerSO-10 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Doc ID 018828 Rev 1 3/14 List of figures VB027SP-E List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. 4/14 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Configuration diagram (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Maximum Icl vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 IC(diag1) vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 IC(diag2) vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Switching waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 PowerSO-10 package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Doc ID 018828 Rev 1 VB027SP-E 1 Block diagram and pins description Block diagram and pins description Figure 1. Block diagram +9& 9G ,1387 '5,9(5 29(57(03  3527(&7,21 48$6,3523  %$6(&855(17  )/$*  56(16(  )/$* )/$* 5()(5(1&(  ("1($'5 Figure 2. Configuration diagram (top view)      *1' 9G 1& ,1387 ',$*   *1' *1' *1' *1' *1'     +9& ("1($'5 Table 2. Pin function Pin number Name Function 1÷5 GND Emitter power ground 6(1) GND Control ground 7 Vd 8 N.C. 9 INPUT Logic input channel 10 DIAG Diagnostic output signal TAB HVC Primary coil output signal Driving stage supply voltage 1. Pin 1÷5 = power GND, pin 6 = signal GND. Pin 6 must be connected to pins 1÷5 externally. Doc ID 018828 Rev 1 5/14 Electrical specifications VB027SP-E 2 Electrical specifications 2.1 Absolute maximum ratings Stressing the device above the rating listed in the Table 3: Absolute maximum ratings may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE program and other relevant quality documents. Table 3. Absolute maximum ratings Symbol Unit Collector voltage Internally limited V IC Collector current Internally limited A Vd Driving stage supply voltage 7 V Id Driving circuitry supply current 200 mA Input voltage 10 V Junction operating temperature -40 to 150 °C Storage temperature -55 to 150 °C Value Unit Tj Tstg Thermal data Table 4. Symbol 6/14 Value HVc VIN 2.2 Parameter Thermal data Parameter Rthj-case Thermal resistance junction-case (MAX) 1.12 °C/W Rthj-amb Thermal resistance junction-ambient (MAX) 62.5 °C/W Doc ID 018828 Rev 1 VB027SP-E Electrical specifications 2.3 Electrical characteristics VCC = 13.5 V; Vd = 5 V; Tj = 25 °C; Rcoil = 510 mΩ; Lcoil = 7 mH unless otherwise specified. Table 5. Electrical characteristics Symbol Parameter Test conditions Min Typ Max Unit 300 360 400 V High voltage clamp VIN = 0.4 V; -40 °C ≤ Tj ≤ 125 °C; IC = 6 A Vcg(sat) Power stage saturation voltage IC = 6 A; VIN = 4 V; Id = 80 mA Vcg(sat)td Power stage saturation voltage derating in temperature IC = 6 A; VIN = 4 V; -40 °C ≤ Tj ≤ 125 °C; Id = 85 mA 2 V Id(off) Power-off supply current VIN = 0.4 V 8 mA Id(on) Power-on supply current VIN = 4 V; IC = 6 A; -40 °C ≤ Tj ≤ 125 °C 130 mA 5.5 V 9 A Vcl Vd Icl Driving stage supply voltage 1.5 4.5 V(1) Collector current limit VIN = 4 Icl(td) Collector current limit drift with temperature See Figure 3 VINH High level input voltage HVC < 2 V 4 5.5 V VINL Low level input voltage IC < 2 mA; HVC = VCC 0 0.8 V IINH High level input current VIN = 4 V 40 200 µA Vd V 0.5 V VdiagH High level diagnostic output voltage REXT = 22 KΩ (See Figure 6) VdiagL Low level diagnostic output voltage REXT = 22 KΩ (See Figure 6) IC(diag1) First threshold level collector current IC(diag1)td 8 3.5 8.5 V (2) 4.25 4.5 4.75 A 5.45 5.8 6.15 A First threshold level collector current See Figure 4 drift with temperature IC(diag2) Second threshold level collector current IC(diag2)td Second threshold level collector current drift with temperature See Figure 5 td(off) Turn-off delay time of output current IC = 5.5 A 25 µs tf(off) Turn-off fall time of output current IC = 5.5 A 8 µs td(diag) Delay time of diagnostic current REXT = 22 KΩ (See Figure 6) 1 µs tr(diag) Turn-on rise time of diagnostic current REXT = 22 KΩ (See Figure 6) 1 µs tf(diag) Turn-off fall time of diagnostic current REXT = 22 KΩ (See Figure 6) 1 µs 1. The primary coil current value Icl must be measured 1 ms after desaturation of the power stage. 2. Vd - Vbe(on). Doc ID 018828 Rev 1 7/14 Electrical specifications 2.4 8/14 VB027SP-E Electrical characteristics curves Figure 3. Maximum Icl vs temperature Figure 5. IC(diag2) vs temperature Figure 4. Doc ID 018828 Rev 1 IC(diag1) vs temperature VB027SP-E Application information 3 Application information 3.1 Principle of operation The VB027SP-E is mainly intended as high voltage power switch device driven by a logic level input and interfaces directly to a high energy electronic ignition coil. The input VIN of the VB027SP-E is fed from a low power signal generated by an external controller that determines both dwell time and ignition point. During VIN high (≥ 4 V) the VB027SP-E increases current in the coil to the desired, internally set current level. When the collector current exceeds 4.5 A, the diagnostic signal is turned high and it remains so, until the load current reaches 5.8 A (second threshold). At that value, the diagnostic signal is turned low, and the µC forces the VIN to the low state. During the coil current switch-off, the primary voltage HVC is clamped by a series of Zener diodes at an internally set value Vcl, typically 360 V. The collector current sensed through the Rsense, is limited thanks to the “Current limiter” block that, as soon as the Icl level is reached, forces the darlington (using the “Driver” block) to limit the current provided. The transition from saturation to desaturation, coil current limiting phase, must have the ability to accommodate an overvoltage. A maximum overshoot of 20 V is allowed. There can be some short period of time in which the output pin (HVC) is pulled below ground by a negative current due to leakage inductances and stray capacitances of the ignition coil. This can cause parasitic glitches on the diagnostic output. VB027SP-E has a built-in protection circuit that allows to lock the p-buried layer potential of the linear stage to the collector power, when the last one is pulled underground. 3.2 Thermal behaviour You can see in the block diagram of the VB027SP-E (see Figure 1) a box called overtemperature protection. The purpose of this circuit is to shift the current level at which the first diagnostic is activated down of about 1 A. This information can be managed by the micro that can take the corrective action in order to reduce the power dissipation. This block is not an effective protection but just an overtemperature detection. The shift down of the first flag level cannot be present for temperatures lower than 125 °C. As an example of its behavior you can suppose a very simple motor management system in which the micro does just a simple arithmetic calculation to decide when to switch-off the device after the first flag threshold. Example IC(DIAG1) info after x ms (IC(DIAG1) = 2.5 A) Iswitch-off info after kx ms. As soon as the temperature rises over the overtemperature threshold, the first diagnostic is shifted down to about 1.5 A and, in this example, the switch-off current is kx * 1.5 / 2.5. Doc ID 018828 Rev 1 9/14 Application information 3.3 VB027SP-E Overvoltage The VB027SP-E can withstand the following transients of the battery line: -100 V / 2 ms (Ri = 10 Ω) +100 V / 0.2 ms (Ri = 10 Ω) +50 V / 400 ms (Ri = 4.2 Ω, with VIN = 3 V) Figure 6. Application circuit Figure 7. Switching waveform 9,1 QG7KUHVKROG VW7KUHVKROG ,FO ',$* ("1($'5 10/14 Doc ID 018828 Rev 1 VB027SP-E Package and packing information 4 Package and packing information 4.1 ECOPACK® In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. 4.2 PowerSO-10 mechanical data Table 6. PowerSO-10 mechanical data mm. inch Dim. Min. Typ Max. Min. Typ. Max. A 3.35 3.65 0.132 0.144 A1 0.00 0.10 0.000 0.004 B 0.40 0.60 0.016 0.024 c 0.35 0.55 0.013 0.022 D 9.40 9.60 0.370 0.378 D1 7.40 7.60 0.291 0.300 E 9.30 9.50 0.366 0.374 E1 7.20 7.40 0.283 0.291 E2 7.20 7.60 0.283 0.299 E3 6.10 6.35 0.240 0.250 E4 5.90 6.10 0.232 0.240 e 1.27 0.050 F 1.25 1.35 0.049 0.053 H 13.80 14.40 0.543 0.567 h 0.50 0.002 Q 1.70 0.067 α 0° 8° Doc ID 018828 Rev 1 11/14 Package and packing information Figure 8. VB027SP-E PowerSO-10 package dimensions %  $ %  (  % H  (  (  ( (    +    6($7,1* 3/$1( '(7$,/$ $ & 0 4 K '  '  6($7,1* 3/$1( $ ) $ $ / '(7$,/$ A ("1($'5 12/14 Doc ID 018828 Rev 1 VB027SP-E 5 Revision history Revision history Table 7. Document revision history Date Revision 14-May-2011 1 Changes Initial release. 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