ST VB326SP User Manual

®
VB326SP
HIGH VOLTAGE IGNITION COIL DRIVER
POWER I.C.
TYPE V
cl
I
cl
I
CC
VB326SP 360V 10A 150mA
PRIMARY COIL VOLTAGE INTERNALLY SET
COIL CURRENT LIMIT INTERNALLY SET
DRIVING CURRENT QUASI PROPORTIONAL
TO COLLECTOR CURRENT
SINGLE FLAG-ON COIL CURRENT
LOW VOLTAGE CLAMP THERMAL
SHUTDOWN
DESCRIPTION
The VB326 SP is a hi gh vol tage po wer inte grated circuit made using the STMicroelectronics
VIPower™ M1-3 tec hnology, with v ertical curre nt flow power darlington and logic level compatible driving c ircuit. T he enable pin all ows to ex ter nally 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
V
CC
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 collect or current to smooth decr ease (low voltage clamp feature ) and no undesi dered spark occurs (see figure 4).
BD
HV
V
IN
DIAGNOSTIC OUTPUT
DRIVER
QUASI PROP.
BASE CURRENT
R
LIMITER
V
CC
V
F1
V
V
R
E
-
REFERENCE
LIM
V
TH
LGND
THERMAL
PROTECTION
SENSE
SN
GND
C
November 2003 1/9
VB326SP
ABSOLUTE MAXIMUM RATING
Symbol Parameter Value Unit
C
CC
s
IN
s/b
BD
stg
E
Collect or voltage (Internally limited) -0.3 to V
c
clamp
Collect or curren t (Internally limi ted) 10 A DC current on Emitter Power ± 10.5 A Driving stage su pply volt age -0.3 to 7 V Driving circuitry suppl y current ± 200 mA DC current on Ground pin ± 1A Input voltage -0.3 to V
+ 0.3 V
CC
Maximum Input Current 100 mA Logic In put Frequency in Ope rative Mod e DC to 150 Hz Output Voltage Primary Threshold Cu rrent Level -0.3 to V
+ 0.3 V
CC
Flag Output Current 100 mA Power Dissi pation (Tc=25°C) 125 W
Self Cla m ped Energy during Ou tput Power Clamping (See figure 2) 275 mJ ESD voltage (HVc pin) ± 4KV ESD voltage (Enable pin) + 1.5 ; -2 KV ESD voltage (Other pins) ± 2KV Input Darlington Base Current 150 mA Input Dar lington Base Voltage Internally limited V Operating Junction Temperature -40 to 150 °C
j
Storage temperature Range -55 to 150 °C Maximum Enable Voltage -0.3 to 5.5 V
E
Maximum Enable Current ± 150 µA
HV
I
I
C(gnd)
V
I
I
s(gnd)
V
I
IN
f
IN
V
OUT(flag)
I
OUT(flag)
P
max
E
V
ESD
V
ESD
V
ESD
I
BD
V
T
T
V
I
V
THERMAL DAT A
Symbol Parameter Value Unit
R
thj-case
R
thj-amb
Thermal resistance junction-case (MAX) 1 °C/W Thermal resista nc e ju nctio n- am b ie nt (MAX) 51 °C/W
PIN FUNCTION
No Name Function
1 - 5 LGND Signal Ground
2 - 3 - 4 GND Emitter Pow e r Groun d
6E Enable (*) 7V
CC
Logic Supply Voltage 8 BD Base Darlington 9 INPUT Logic input channel (Internal Pull Down)
10 FLAG Diagnostic Output Signal (Ope n Em itter)
TAB HV
(*) When grounded the Input is Enabled
C
Primary Coil Output Driver (Open Colle ctor)
CONNECTION DIAGRAM ( TOP VIEW)
LGND GND GND GND LGND
Pin 1 and Pin 5 must be ex ternally co nnected to Pins 2÷4.
E V
CC
BD INPUT FLAG
6 7 8 9
10
TAB
HV
C
5 4 3 2 1
2/9
VB326SP
ELECTRICAL CHARACTERISTICS (5.3V < V
=3.75mH unless otherwise specified; See note 1)
L
coil
< 24V; VCC=5V ± 10%; -40ºC < Tj < 125ºC; R
bat
=580mΩ;
coil
Symbol Parameter Test Conditions Min Typ Max Unit
High Voltage Clamp I
V
cl
V
V
ce(sat)
I
CC(stdby)
I
CC
I
CC(peak)
V
I
I
c(off)
T
Ic_ctr
V
INH
V
V
IN(hyst)
I
INH
I
INL
I
INpd
V
diagH
V
diagL
I
diagTH
I
diagTD
I
diag
I
diag(l eak)
V
E
t
ON
t
OFF
T
V
V
Note 1: param etric degratation are allowed with 5.3<Vb<10V an d Vb>24V. Note 2: the primary coil current value I Note 3: no inte r nal Pull-down . Note 4: if ENAB LE pin is floating OUT =Off for every input status. (*) Internally Limited
Low Voltage Clamp I
lcl
Power Stage Saturation Voltage
Stand-by Supply Current IN=Of f 11 mA DC Logic Curr ent Peak DC Logic Current
during On Phase
DC Logic Vo ltage 4.5 5.5 V
CC
Coil Current Limit
cl
Output Off State Current IN=Off; V Thermal Temperature
Output Current Control High Level Input Volt age VCC=4.5V 4 V Low Level Input Voltage VCC=5.5V -0.3 0.8 V
INL
Input Threshold Hy steresi s 0.4 V High Level Input Current VIN=4V 100 µA Low Level Input Current VIN=0.8V 0 30 µA Inpu t A ctive Pull Down VIN=4V 10 100 µA High Level Flag Output
Voltage Low Level Flag Output
Voltage
Coil Current Level T hresho ld Tj=25ºC 6.15 6.5 6.85 A
Coil Curre nt Level Thres hold Drift
High Level Flag Output Current
Leakage C urrent on Flag Output
Antipara ll el Diode Fo rward
F
Voltage Sing le Pulse Avalanche
s/b
Ener gy Turn-on time
Turn-off time Ther ma l sh ut-down
sd
intervention High Level Enable Voltage VIN=V
EH
Low Level Enable Voltage V
EL
must be measured 1ms after desaturation of the power stage.
cl
=6.5A 320 360 420 V
coil
=6.5A; Tj=T
coil
sd
30 40 50 V
IC=6A; VIN=4V 1.5 2 V
Vb=16V; IC=6.5A; f=100Hz; Load = Coil; VCC=5.5V
40 mA
IC=6.5A 100 150 mA
-40ºC < T (See no te 2)
< 125ºC
j
=24V; VCC=5V; Tj=25ºC 5 mA
HVC
911A
OUT=On 150 (*) ºC
CC
R
EXT
R
EXT
=22KΩ; C
=22KΩ; C
=1nF (S ee note 3) V
EXT
=1nF (S ee note 3) 0.5 V
EXT
- 1 V
CC
CC
(See figure 1)
IC > I
diagTH
; V
=3V 0.5 mA
diag
VIN=Low; VCC=5.5V 10 µA
= -1A 2 V
I
C
L=6mH; IC= 8A (See figure 2) 180 mJ Rc=0.5Ω; Lc=3.75m H ; Tj=25ºC;
V
=13V (S ee figure 6)
bat
Rc=0.5Ω; Lc=3.75mH; IC=6.5A; Tj=25ºC; V
=13V (S ee figure 6)
bat
15µs
15 25 µs
150 ºC
; OUT=Off (See Note 4) 2 V
INH
free to follow V
OUT
IN
0.40 V
V
V
3/9
1
VB326SP
ELECTRICAL CHARACTERISTICS (continued)
Symbol Parameter Test Conditions Min Typ Max Unit
I
EH
I
EL
V
BD(off)
V
BD(on)
High Level Sinked Enable Current
Low Level Sinked Enable Current
Base Darlington Voltage Off VE=V Base Darlington Voltage On VIN=V
VE=5V 500 µA
VE<0.4V - 200 µA
EH
; VE=VEL; IC=6.5A 1.8 V
INH
1V
PRINCIPLE OF OPERATION
The VB326SP is mainly intended as a high voltage power switch device driven by a logic le vel input and interfaces directl y to a hi gh energ y electro nic ignition coil.
The input VIN of the VB326S P is fed from a low power signa l generated by an external con troller that determinesb oth dwell time an d ignition point . During Vin high (4V) the VB326SP increases current in the coil to the desired, internally set current level.
After reachi ng this level, the coil current r emains constant until the ignition point, that corresponds to the transiti on of Vin fr om hig h to low (ty p. 1.9V threshold).
During the coil current switch-off, the primary
Vcl, typical ly 380V. T he transiti on from sa turation 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 6.5A, the feedback sign al is turne d high and it remains so, until the input voltage is turned-off.
OVERVOLTAGE
The VB326SP can withstand the following transients of the battery line:
-100V/2msec(Ri =10 ) +100V/0.2msec (Ri =10 ) +50V/400msec (Ri = 4.2 , with VIN= 3V)
voltage HVC is clamped at an internal ly set value
Figure 1: Flag current Vs. temperature Figure 2: Single pulse avalanche energy cap ability
4/9
1
700 650 600 550 500 450 400 350 300
E (mJ )
250 200 150 100
50
0
0 102030405060708090100110
Tc=25º
Tc=150º
L (mH)
VB326SP
Figure 3: Self Clamped Inductive Switching
Current Vs. Time
10
8
6
4
Inductive Current (A)
2
0
200 3 00 400 500 600 700 800 900 1000
T=25º
T=150º
Time in Clamp (µsec)
Figur e 5: Typical application diagram
Figure 4: Low voltage clamp feature
+5V
1µF
100nF
1K
V
1K
E
µP
1nF
ENABLE pin can be alternatively connected to LGND
1K
FLAG
18K
V
bat
V
CC
IN
LGND
BD
GND
HV
C
5/9
VB326SP
Figur e 6: Switching time for inductive load
V
bat
V
V
CC
100V
gen
R
gen
V
gen
C
D.U.T
E
t
6/9
V
bat
3V
t
t
OFF
ON
t
PowerSO-10 MECHANICAL DATA
VB326SP
DIM.
MIN. TYP MAX. MIN. TYP. MAX.
mm. inch
A 3.35 3.65 0.132 0.144
A (*) 3.4 3.6 0.134 0.142
A1 0.00 0.10 0.000 0.004
B 0.40 0.60 0.016 0.024
B (*) 0.37 0.53 0.014 0.021
C 0.35 0.55 0.013 0.022
C (*) 0.23 0.32 0.009 0.0126
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
E2 7.20 7.60 0.283 300
E2 (*) 7.30 7.50 0.287 0.295
E4 5.90 6.10 0.232 0.240
E4 (*) 5.90 6.30 0.232 0.248
e 1.27 0.050 F 1.25 1 .35 0.049 0.053
F (*) 1.20 1.40 0.047 0.055
H 13.80 14.40 0.543 0.567
H (*) 13.85 14.35 0.545 0.565
h 0.50 0.002 L 1.20 1.80 0.047 0.070
L (*) 0.80 1.10 0.031 0.043
α
α (*)
(*) Muar only POA P013P
HE
h
A
F
A1
10
1
eB
0.25
D
= =
D1
= =
E2
DETAIL "A"
DETA IL "A"
B
0.10 A
SEATING
PLANE
A
C
α
B
E4
SEATING PLANE
A1
L
P095A
7/9
VB326SP
PowerSO-10 SUGGESTED PAD LAYOUT
14.6 - 14.9
10.8 - 11
6.30
0.67 - 0.73 1 2 3
9.5 4
5
10
0.54 - 0.6
9 8
7
1.27
6
TAPE AND REEL SHIPMENT (suffix “13TR”)
TUBE SHIPMENT (no suffix)
C
A
B
A
All dimensi ons ar e in mm.
Base Q.ty Bulk Q.ty Tube length (± 0. 5) A B C (± 0.1 )
Casablanca 50 1000 532 10.4 16.4 0.8
Muar 50 1000 532 4.9 17.2 0.8
MUARCASABLANCA
B
REEL DIMENSIONS
Base Q.ty 600 Bulk Q.ty 600 A (max) 330 B (min) 1.5 C (± 0.2) 13
F 20.2 G (+ 2 / -0) 24.4 N (min) 60 T (max) 30.4
C
TAPE DIMENSIONS
According to Electronic Industries Association (EIA) Standard 481 rev. A, Feb 1986
Tape width W 24 Tape Hole Spacing P0 (± 0.1) 4 Component Spacing P 24 Hole Diameter D (± 0.1/-0) 1.5 Hole Diameter D1 (min) 1.5 Hole Position F (± 0.05) 11.5 Compartm ent Depth K (max) 6.5 Hole Spacing P1 (± 0.1) 2
All dimensions are in mm.
Top
cover
tape
End
500mm min
All dimensions are in mm.
Empty components pockets saled with cover tape.
User direction of feed
Start
No componentsNo components Components
500mm min
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1
1
1
VB326SP
Information furnished is believed to be accurate and r eliable. Ho wev er, STMicroelectr onics assume s no r es ponsibility 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. Specif ic ations mentioned in this publication are subject to c hange withou t notice. This publicatio n s upersedes and replaces all information previous ly s upplied. STM icroelect r on ics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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The ST logo is a trademark of ST M ic r oelectronic s
2003 STMicroelectronics - Printed in ITALY- All Rights Reserved.
STMicroelectronics GROUP OF COMPANIES
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