VB025

VB025SP STMICROELECTRONICS | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 7

Technical content

HIGH VOLTAGE IGNITION COIL DRIVER POWER IC n PRIMARY COIL VOLTAGE INTERNALLY SET n COIL CURRENT LIMIT INTERNALLY SET n LOGIC LEVEL COMPATIBLE INPUT n DRIVING CURRENT QUASI PROPORTIONAL TO COLLECTOR CURRENT n SINGLE FLAG-ON COIL CURRENT

DESCRIPTION

The VB025SP is a high voltage power integrated circuit made using STMicroelectronics VIPower Technology, with vertical current flow power darlingtonand logic level compatible driving circuit. Built-in protection circuits for coil current limiting and collector voltage clamping allows the VB025SP to be used as a smart, high voltage, high current interface in advanced electronic ignition systems. March 1999 BLOCK DIAGRAM TYPE V cl Icl Id VB025SP 380 V 9 A 100 mA PowerSO-10

Symbol Parameter Value Unit HV C Collector Voltage (Internally Limited) -0.3 to V clamp V IC Collector Current (Internally Limited) 10 A IC(gnd) DC Current on Emitter Power ± 10.5 (∗)A VCC Driving Stage Supply Voltage -0.3 to 7 V Is Driving Circuitry Supply Current ± 200 mA Is(gnd) DC Current on Ground Pin ± 1A V in Input Voltage -0.3 to VCC + 0.3 V Iin Maximum Input Current 100 mA fin Logic Input Frequency in Operative Mode DC to 150 Hz V out(flag) Output Voltage Primary Threshold Current Level -0.3 to VCC + 0.3 V Iout(flag) Flag Output Current 100 mA P max Power Dissipation (TC = 105oC) TBD W E s/b Clamped Energy During Output Power Clamping 300 mJ V ESD ESD Voltage (HVC Pin) ± 4K V V ESD ESD Voltage (Other Pins) ± 2K V IBD Input Darlington Base Current 150 mA V BD Input Darlington Base Voltage Internally Limited V Tj Operating Junction Temperature -40 to 150 oC Tstg Storage Temperature Range -55 to 150 oC (∗) With 10 mils Al wire THERMAL DATA R thj-case Thermal Resistance Junction Case (MAX) 1.2 oC/W R thj-h Thermal Resistance Junction Heatsink with FR4 (MAX) TBD ( M ) oC/W Tsold Lead Temperature During Soldering (MAX) TBD ( M ) oC (M ) see application note AN515/1094 on VIPower data-book 1stedition. VB025SP

1-5 GND Emitter Power Ground

6 GND Control Ground (*)

7V CC Logic Supply Voltage

8 BD Base Darlington

9 INPUT Logic Input Channel (Internal Pull Down)

10 FLAG Diagnostic Output Signal (Open Emitter)

TAB HVC Primary Coil Output Driver (Open Collector) (*) Pin 6 must be connec ted to pins 1-5 externally ELECTRICAL CHARACTERISTICS (5.3V < Vb < 24V; VCC =5V ± 10%; -40oC<T j< 125oC; Rcoil= 580 mΩ ;Lcoil= 3.75 mH; unless otherwise specified; see note 1) Symbol Parameter Test Conditions Min. Typ. Max. Unit V cl High Voltage Clamp I coil= 6.5 A 320 380 420 V V ce(sat) Saturation Voltage of The Power Stage Ic =6 . 5 A ; Vin =4 V 1 . 5 2 V ICC(stdby) Stand-by Supply Current IN = OFF 10 mA ICC DC Logic Current V b =1 6V I c =6 . 5A f=1 0 0H z Load = Coil V CC =5 . 5 V 40 mA ICC(peak) Peak DC Logic Current During On Phase Ic = 6.5 A (see figure 1) 100 150 mA V CC DC Logic Voltage 4.5 5.5 V Icl Coil Current Limit -40 oC<T j <1 2 5o C (see note 2 and figure 1) 8.25 10 A Ic(le ak) Output leakage Current IN = OFF V HVC = 24V 0.8 mA IC(infl) Collector Current with Floating Input VCC = 5 V VBat = 13.5 V R LOAD =1 KΩ ; Input Floating 0.8 mA TIc_ctr Thermal Temperature Output Current Control OUT = ON (see figure 2) 150 (*) oC VB025SP

Symbol Parameter Test Conditions Min. Typ. Max. Unit V inH High Level Input Voltage V CC =4 . 5 V 4 V CC V V inL Low Level Input Voltage V CC =5 . 5 V - 0 . 3 0 . 8 V Vin(h ys ) Input Threshold Hysteresis 0.4 V IinH High Level Input Current V in = 4 V 100 µ A IinL Low Level Input Current V in =0 . 8V - 1 0 0 µ A Iinpd Input Active Pull-Down V in = 4 V 10 100 µ A V diagH High Level Flag Output Voltage R EXT =2 2K Ω C EXT =1n F (see note 3) V CC -1 V CC V V diagL Low Level Flag Output Voltage R EXT =2 2K Ω C EXT =1n F (see note 3) 0.5 V IdiagTH Coil Current Level Threshold Tj =2 5o C (see figure 1) 4.25 4.5 4.75 A IdiagTD Coil Current Level Threshold Drift (see figure 3) Idiag High Level Flag Output Current IC >I diagTH V diag =3V 0 . 5 T B D m A Idiag(leak) Leakage Current On Flag Output V in =L O W V CC = 5.5V 10 µ A V F Antiparallel Diode Forward Voltage Ic =- 1A 2 V E s/b Single Pulse Avalanche Energy L=6m H I C =8A (see figure 4) 180 mJ tpHL Turn-on Delay Time of Coil Current R c =0 . 5Ω Lc =3 . 7 5m H (see figure 5) TBD µ s tpLH Turn-off Delay Time of Coil Current R c =0 . 5Ω Lc =3 . 7 5m H Ic =6 . 5A (see figure 5) TBD µ s Note 1: Parametric degradation are allowed with 5.3 < Vb < 10V and Vb > 24V. Note 2: The primary coil current value Iclmust be measured 1ms after desaturation of the power stage. Note 3: No Internal Pull-Down (*) Internally limited ELECTRICAL CHARACTERISTICS (continued) PRINCIPLE OF OPERATION The VB025SP is mainly intended as a 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 VB025SP is fed from a low power signal generated by an external controller that determines both dwell time and ignition point. During Vin high (≥ 4V) the VB025SP increases current in the coil to the desired, internally set current level. After reaching this level, the coil current remains constant until the ignition point, that corresponds to the transition of Vin from high to low (typ. 1.9V threshold). During the coil current switch-off, the primary voltage HVc is clamped at an internally set value Vcl, typically 380V. The transition from saturation to desaturation, coil current limiting phase, must have the ability to accomodate an overvoltage. A maximum overshoot of 20V is allowed. FEEDBACK When the collector current exceeds 4.5A, the feedback signal is turned high and it remains so, until the input voltage is turned-off. OVERVOLTAGE The VB025SP can withstand the following transients of the battery line: -100V/2msec (R i=1 0Ω ) +100V/0.2msec (Ri=1 0Ω ) +50V/400msec (Ri= 4.2Ω , with VIN =3V ) VB025SP

FIG. 4Single Pulse Typical Es/b CurveFig. 3Flag Current Versus Temperature FIG. 5Propagation Times Definitions. 10 % 50 % 10 % 200 V ttpHL pLH INPUT HVC SC10930 Fig. 1Main Waveforms During On Phase Fig. 2Output Current Waveform After Thermal Protection Activation VB025SP

DIM. mm inch 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 0.300 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 L 1.20 1.80 0.047 0.071 q 1.70 0.067 α 0 o 8o DETAIL ”A” PLANE SEA TING α L F h A D D1== 0.10 A E1E3 C Q A B B DETAIL ”A” SEATING PLANE 610 eB HE M0.25 0068039-C PowerSO-10 MECHANICAL DATA VB025SP

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. Specification 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 trademark of STMicroelectronics  1999 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. http://www.st.com VB025SP