VB325SP

® VB325SP HIGH VOLTAGE IGNITION COIL DRIVER POWER I.C. TYPE VB325SP s s Vcl 380V Icl 10A ICC 150mA PRIMARY COIL VOLTAGE INTERNALLY SET COIL CURRENT LIMIT INTERNALLY SET s LOGIC LEVEL COMPATIBLE INPUT s DRIVING CURRENT QUASI PROPORTIONAL TO COLLECTOR CURRENT s SINGLE FLAG-ON COIL CURRENT s LOW VOLTAGE CLAMP THERMAL SHUTDOWN DESCRIPTION The VB325SP is a high voltage power integrated circuit made using the STMicroelectronics VIPower™ M1-3 technology, with vertical current flow power darlington and logic level compatible driving circuit. The enable pin allows to externally block the switch when the input is on. 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 BLOCK DIAGRAM VCC 10 1 PowerSO-10™ in advanced electronic ignition system. If the input signal from the micro happens to remain high, the device protects itself against over-heating by forcing collector current to smooth decrease (low voltage clamp feature) and no undesidered spark occurs (see figure 4). BD HVC VIN DRIVER QUASI PROP. BASE CURRENT DIAGNOSTIC OUTPUT VR LIMITER RSENSE VCC VF1 REFERENCE VLIM VTH THERMAL PROTECTION SN E LGND GND November 2003 1/9 VB325SP ABSOLUTE MAXIMUM RATING Symbol HVc IC IC(gnd) VCC Is Is(gnd) VIN IIN fIN VOUT(flag) IOUT(flag) Pmax Es/b VESD VESD VESD IBD VBD Tj Tstg VE IE Parameter Collector voltage (Internally limited) Collector current (Internally limited) DC current on Emitter Power Driving stage supply voltage Driving circuitry supply current DC current on Ground pin Input voltage Maximum Input Current Logic Input Frequency in Operative Mode Output Voltage Primary Threshold Current Level Flag Output Current Power Dissipation (Tc=25°C) Self Clamped Energy during Output Power Clamping (See figure 2) ESD voltage (HVc pin) ESD voltage (Enable pin) ESD voltage (Other pins) Input Darlington Base Current Input Darlington Base Voltage Operating Junction Temperature Storage temperature Range Maximum Enable Voltage Maximum Enable Current Value -0.3 to Vclamp 10 ± 10.5 -0.3 to 7 ± 200 ±1 -0.3 to VCC + 0.3 100 DC to 150 -0.3 to VCC + 0.3 100 125 275 ±4 + 1.5 ; -2 ±2 150 Internally limited -40 to 150 -55 to 150 -0.3 to 5.5 ± 150 Unit V A A V mA A V mA Hz V mA W mJ KV KV KV mA V °C °C V µA THERMAL DATA Symbol Rthj-case Rthj-amb Parameter Thermal resistance junction-case Thermal resistance junction-ambient (MAX) (MAX) Value 1 51 Unit °C/W °C/W PIN FUNCTION No 1-5 2-3-4 6 7 8 9 10 TAB Name LGND GND E VCC BD INPUT FLAG HVC Function Signal Ground Emitter Power Ground Enable (*) Logic Supply Voltage Base Darlington Logic input channel (Internal Pull Down) Diagnostic Output Signal (Open Emitter) Primary Coil Output Driver (Open Collector) (*) When grounded the Input is Enabled CONNECTION DIAGRAM (TOP VIEW) Pin 1 and Pin 5 must be externally connected to Pins 2÷4. E VCC BD INPUT FLAG 6 7 8 9 10 TAB 5 4 3 2 1 LGND GND GND GND LGND HVC 2/9 VB325SP ELECTRICAL CHARACTERISTICS (5.3V < Vbat < 24V; VCC=5V ± 10%; -40ºC < Tj < 125ºC; Rcoil=580mΩ; Lcoil=3.75mH unless otherwise specified; See note 1) Symbol Vcl Vlcl Vce(sat) ICC(stdby) ICC ICC(peak) VCC Icl Ic(off) VINH VINL VIN(hyst) IINH IINL IINpd VdiagH VdiagL IdiagTH IdiagTD Idiag Idiag(leak) VF Es/b tON tOFF Tsd VEH VEL Parameter High Voltage Clamp Low Voltage Clamp Power Stage Saturation Voltage Stand-by Supply Current DC Logic Current Peak DC Logic Current during On Phase DC Logic Voltage Coil Current Limit Output Off State Current High Level Input Voltage Low Level Input Voltage Input Threshold Hysteresis High Level Input Current Low Level Input Current Input Active Pull Down High Level Flag Output Voltage Low Level Flag Output Voltage Coil Current Level Threshold Coil Current Level Threshold Drift High Level Flag Output Current Leakage Current on Flag Output Antiparallel Diode Forward Voltage Single Pulse Avalanche Energy Turn-on time Turn-off time Test Conditions Icoil=6.5A Icoil=6.5A; Tj=Tsd IC=6A; VIN=4V IN=Off Vb=16V; IC=6.5A; f=100Hz; Load = Coil; VCC=5.5V IC=6.5A -40ºC < Tj < 125ºC (See note 2) IN=Off; VHVC=24V; VCC=5V; Tj=25ºC VCC=4.5V VCC=5.5V VIN=4V VIN=0.8V VIN=4V REXT=22KΩ; CEXT=1nF (See note 3) REXT=22KΩ; CEXT=1nF (See note 3) Tj=25ºC (See figure 1) IC > IdiagTH; Vdiag=3V VIN=Low; VCC=5.5V IC= -1A L=6mH; IC= 8A Rc=0.5Ω; Lc=3.75mH; Tj=25ºC; Vbat=13V (See figure 6) Rc=0.5Ω; Lc=3.75mH; I C=6.5A; Tj=25ºC; Vbat=13V (See figure 6) 150 2 0.40 180 1 15 5 25 0.5 10 2 mA µA V mJ µs µs ºC V V 4.25 4.5 4.5 9 4 -0.3 0.4 0 10 VCC - 1 100 Min 320 30 Typ 380 40 1.5 Max 420 50 2 11 40 150 5.5 11 5 VCC 0.8 100 30 100 VCC 0.5 4.75 Unit V V V mA mA mA V A mA V V V µA µA µA V V A Thermal shut-down intervention High Level Enable Voltage VIN=VINH; OUT=Off (See Note 4) Low Level Enable Voltage VOUT free to follow VIN Note 1: parametric degratation are allowed with 5.3