View VB125ASP_390229.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

(R)
VB125ASP
HIGH VOLTAGE IGNITION COIL DRIVER POWER I.C.
TYPE VB125ASP
s s
Vcl 340V
Icl 11.1A
ICC 200mA
PRIMARY COIL VOLTAGE INTERNALLY SET COIL CURRENT LIMIT INTERNALLY SET s LOGIC LEVEL COMPATIBLE INPUT s BATTERY OPERATION s SINGLE FLAG-ON COIL CURRENT s TEMPERATURE COMPENSATED HIGH VOLTAGE CLAMP DESCRIPTION The VB125ASP is a high voltage power integrated circuit made using the STMicroelectronics VIPowerTM M1-2 technology, with vertical current flow power darlington and logic level compatible driving circuit. The VB125ASP can be directly biased by using the 12V battery voltage, thus avoiding to use a low voltage regulator. It has BLOCK DIAGRAM
10
1
PowerSO-10TM
built-in protection circuit for coil current limiting and collector voltage clamping. It is suitable as smart, high voltage, high current interface in advanced electronic ignition system.
VCC
CS
HVC
INPUT DRIVER
FLAG
FLAG VOLTAGE REFERENCE THERMAL PROTECTION RSENSE
*
GND
PWR GND
(*) Pins 1...5
December 2000
1/9
1
VB125ASP
ABSOLUTE MAXIMUM RATING
Symbol HVc IC VCC ICC IS VIN Ptot VESD VESD Tj Tstg Parameter Collector voltage (Internally limited) Collector current (Internally limited) Driving stage supply voltage Driving circuitry supply current Logic circuitry supply current Input voltage Power dissipation at TC25 C ESD Voltage (HVC pin) ESD Voltage (other pin) Junction operating temperature Storage temperature Range Value -0.3 to Vcl 11.1 -0.2 to 40 400 100 -0.3 to 6 100 -4 to 4 -2 to 2 -40 to 150 -55 to 150 Unit V A V mA mA V W KV KV C C
THERMAL DATA
Symbol Rthj-case Rthj-amb Parameter Thermal resistance junction-case Thermal resistance junction-ambient (MAX) (MAX) Value 1.2 62.5 Unit C/W C/W
CONNECTION DIAGRAM (TOP VIEW)
VCC GND Cs INPUT FLAG
6 7 8 9 10 TAB HVC
5 4 3 2 1
PWR GND PWR GND PWR GND PWR GND PWR GND
PIN FUNCTION
No
1/5
Name PWR GND VCC GND Cs INPUT FLAG HVC
6 7 8 9 10 TAB
Function Emitter power ground Logic supply voltage Control ground (*) Logic level supply voltage filter capacitor Logic input channel Diagnostic output signal Primary coil output driver
(*) Pin 7 must be connected to pins 1/5 externally.
2/9
1
VB125ASP
ELECTRICAL CHARACTERISTICS (VCC=6 to 24V; -40Cotherwise specified; see note 1) Symbol Vcl Vcg(sat) ICC(off) ICC(on) Icl VINH VINL VIN(hyst) IINH IINL VdiagH VdiagL Parameter High voltage clamp Power stage saturation voltage Power-off supply current Power-on supply current Collector current limit High level input voltage Low level input voltage Hysteresis input voltage High level input current Low level input current High level diagnostic output voltage Low level diagnostic output voltage Threshold level collector current Test Conditions IC=7A; (See note 2) IC=2A; (Switching off from 7A) IC=6A; VCC=14V; VIN=4V IC=7A; VCC=14V; VIN=4V (See note 3) VIN=0.4V; VCC=14V VIN=0.4V; VCC=24V (See note 4;5) VIN=4V; VCC<14V; IC=4A VIN=4V; VCC=24V; IC=4A (See note 4; 5) VIN=4V; 10VIC(diag) (See note 7) VIN=LOW If=10A 300 IN=ON (See note 10) (See note 11) (See note 12) 7 150 1 60 0.5 10 3.5 mA A V mJ C s s 5.45 5.55 5.5 5.9 5.7 5.5 150 30 5.5 0.5 6.8 6.35 6.35 6.6 6.3 6.3 Unit V V V V mA mA mA mA A V V V A A V V A A A A A A
3/9
1
VB125ASP
NOTE 1: Only functionality is guaranteed with 6V24V and not parameter values. NOTE 2: In the high voltage clamping structure of this device a temperature compensation has been implemented. The circuit schematic is shown in fig. 1. The KVbe cell takes care of the temperature compensation. The whole electrical characteristic of the new circuit is shown in fig. 2. Up to VCE=nVZ no current will flow into the collector (just the leakage current of the power stage); for nVZ < VCE < Vcl a current begins to flow across the resistances of the KVbe compensation circuit (typical slope 20 K) as soon as the Vcl reached the dinamic resistance drop to ~4 to protect the device against overvoltage (See figure 3). NOTE 3: The saturation voltage of the Power stage includes the drop on the sensing resistor.
NOTE 4: Considering the different ways of operation of the device (with or without spark, etc...) there are some short
periods of time in which the output terminal (HVC) is pulled below ground by a negative current due to leakage inductances and stray capacitances of the ignition coil. With VIPower devices, if no corrective action is taken, these negative currents can cause parasitic glitches on the diagnostic output. To kill this potential problem, a circuit that avoids the possibility for the HVC to be pulled underground, by sending the required negative current from the battery is implemented in the VB125ASP. For this reason there are some short periods in which a current exceeding 220 mA flows in the VCC pin. NOTE 5: A zener protection of 16V (typical) is placed on the supply pin (VCC) of the chip to protect the internal circuitry. For this reason, when the battery voltage exceeds that value, the current flowing into VCC pin can be greater than the maximum current specified at VCC=14V (both in power on and power off conditions): it will be limited by an internal resistor. NOTE 6: The primary coil current value Icl must be measured 1 ms after desaturation of the power stage. NOTE 7: These limits apply with regard to the minimum battery voltage and resistive drop on the coil and cables that permit to reach the limitation or diagnostic level. NOTE 8: No internal Pull-Down. NOTE 9: When IC gets over I C(diag), the diagnostic output voltage rises to the high level and so it remains until the end of the input signal. NOTE 10: Tjmin=150C means that the behavior of the device will not be affected for junction temperature lower than 150 For higher temperature, the thermal protection circuit will begin its action reducing the Icl limit according with the C. power dissipation. Chip temperature is a function of the Rth of the whole system in which the device will be operating (See Fig.4). NOTE 11: Turn on delay time measured from 90% of input voltage rising edge to 10% of output voltage falling edge. NOTE 12: Turn off delay time is defined as the time between the 90% of input pulse falling edge and the point where the HVC reaches 200V.
FIGURE 1: Temperature compensated high voltage clamp
HVC nV Z
FIGURE 2: Electrical characteristic of the circuit shown in Figure 1.
IC [mA]
40
R i1 KVbe R ii
30
20 slope Ri
10
R sense
PWR GND
100
200
300 nVZ
400 VCL
VCE [V]
4/9
1
VB125ASP
FIGURE 3: Vcl with load L4mH
FIGURE 4: Output Current Waveform after Thermal Protection Activation.
5/9
1
VB125ASP
FIGURE 5: Waveforms FIGURE 6: Threshold Collector Current Vs Temperature
IC(diag) (A)
INPUT 7A
7.0
6A IC
6.0
5.0
HVC
4.0 -50
FLAG
0
50
100
Tcase (C)
FIGURE 7: Application Circuit VCC
100F
100nF
VCC
HVC
INPUT
P
1nF 22K
FLAG
VB125ASP
100nF
CS GND PWR GND
CEXT
REXT
6/9
1
VB125ASP
PowerSO-10TM MECHANICAL DATA
DIM. A A (*) A1 B B (*) C C (*) D D1 E E2 E2 (*) E4 E4 (*) e F F (*) H H (*) h L L (*) (*)
(*) Muar only POA P013P
mm. MIN. 3.35 3.4 0.00 0.40 0.37 0.35 0.23 9.40 7.40 9.30 7.20 7.30 5.90 5.90 1.27 1.25 1.20 13.80 13.85 0.50 1.20 0.80 0 2 1.80 1.10 8 8 0.047 0.031 0 2 1.35 1.40 14.40 14.35 0.049 0.047 0.543 0.545 TYP MAX. 3.65 3.6 0.10 0.60 0.53 0.55 0.32 9.60 7.60 9.50 7.60 7.50 6.10 6.30 MIN. 0.132 0.134 0.000 0.016 0.014 0.013 0.009 0.370 0.291 0.366 0.283 0.287 0.232 0.232
inch TYP. MAX. 0.144 0.142 0.004 0.024 0.021 0.022 0.0126 0.378 0.300 0.374 300 0.295 0.240 0.248 0.050 0.053 0.055 0.567 0.565 0.002 0.070 0.043 8 8
B
0.10 A B
10
H
E
E2
E
E4
1
SEATING PLANE e
0.25
B
DETAIL "A"
A
C D = D1 = = = SEATING PLANE
h
A F A1
A1
L DETAIL "A"
P095A
7/9
1
VB125ASP
PowerSO-10TM SUGGESTED PAD LAYOUT
14.6 - 14.9
B
TUBE SHIPMENT (no suffix)
CASABLANCA MUAR
C
10.8- 11 6.30
A A
C
0.67 - 0.73 1 2 3 4 5 10 9 8 7 6 1.27 0.54 - 0.6
B
9.5
All dimensions are in mm. Base Q.ty Bulk Q.ty Tube length ( 0.5) Casablanca Muar 50 50 1000 1000 532 532 A B C ( 0.1) 0.8 0.8
10.4 16.4 4.9 17.2
TAPE AND REEL SHIPMENT (suffix "13TR")
REEL DIMENSIONS
Base Q.ty Bulk Q.ty A (max) B (min) C ( 0.2) F G (+ 2 / -0) N (min) T (max) 600 600 330 1.5 13 20.2 24.4 60 30.4
All dimensions are in mm.
TAPE DIMENSIONS
According to Electronic Industries Association (EIA) Standard 481 rev. A, Feb 1986 Tape width Tape Hole Spacing Component Spacing Hole Diameter Hole Diameter Hole Position Compartment Depth Hole Spacing W P0 ( 0.1) P D ( 0.1/-0) D1 (min) F ( 0.05) K (max) P1 ( 0.1) 24 4 24 1.5 1.5 11.5 6.5 2
End
All dimensions are in mm.
Start Top cover tape 500mm min Empty components pockets saled with cover tape. User direction of feed 500mm min No components Components No components
8/9
1
1
VB125ASP
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 results 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 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 registered trademark of STMicroelectronics (c) 2000 STMicroelectronics - Printed in ITALY- All Rights Reserved. STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com
9/9

▲Up To Search▲

Price & Availability of VB125ASP

	To Download VB125ASP Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .