ST VB525SP-E User Manual
VB525SP-E
High voltage ignition coil driver power integrated circuit
Features
Type |
Vcl |
Icl |
ICC |
VB525SP-E |
380 V |
10 A |
150 mA |
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■ECOPACK®: lead free and RoHS compliant
■Primary coil voltage internally set
■Coil current limit internally set
■Logic level compatible input
■Driving current quasi proportional to collector current
■Single flag on coil current
■Low voltage clamp thermal shutdown
10
1
PowerSO-10
Description
The VB525SP-E is a high voltage power integrated circuit made using the STMicroelectronics™ VIPower™ M1-3 technology, with Darlington and logic level compatible vertical current flow power driving circuit.
The enable pin allows to externally block the switch when the input is on. A built-in protection circuit for coil current limiting and collector voltage clamping allows the device to be used as a smart, high voltage, high current interface in advanced electronic ignition systems. If the input signal from the microcontroller happens to remain high, the device protects itself against overheating by forcing collector current to smoothly decrease (low voltage clamp feature) to avoid undesired spark.
Table 1. |
Device summary |
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Order codes |
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Tube |
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Tape and real |
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PowerSO-10 |
VB525SP-E |
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VB525SPTR-E |
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September 2010 |
Doc ID 18022 Rev 1 |
1/19 |
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www.st.com |
Contents |
VB525SP-E |
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Contents
1 |
Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. 5 |
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2 |
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. 7 |
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2.1 |
Absolute maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
7 |
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2.2 |
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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3 |
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
9 |
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3.1 |
Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
12 |
4 |
Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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4.1 Principle of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.2 Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.3 Overvoltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5 |
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
15 |
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5.1 |
ECOPACK® packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
15 |
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5.2 |
PowerSO-10 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
15 |
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5.3 |
Packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
17 |
6 |
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
18 |
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2/19 |
Doc ID 18022 Rev 1 |
VB525SP-E |
List of tables |
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List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table 2. Pin function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Table 3. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Table 4. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 5. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 6. PowerSO-10 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Table 7. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Doc ID 18022 Rev 1 |
3/19 |
List of figures |
VB525SP-E |
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List of figures
Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 2. Connection diagram (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 3. Switching time for inductive load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 4. Flag current vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 5. Single pulse avalanche energy capability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 6. Self clamped inductive switching current vs time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 7. Low voltage clamp feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 8. Application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Figure 9. PowerSO-10 package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Figure 10. PowerSO-10 suggested pad layout and tube shipment (no suffix). . . . . . . . . . . . . . . . . . . 17 Figure 11. PowerSO-10 tape and reel shipment (suffix “TR”) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4/19 |
Doc ID 18022 Rev 1 |
VB525SP-E |
Block diagram and pin description |
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1 Block diagram and pin description
Figure 1. Block diagram
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VCC |
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BD |
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VIN |
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HVC |
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DRIVER |
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QUASI PROP. |
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BASE CURRENT |
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DIAGNOSTIC |
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LIMITER |
RSENSE |
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OUTPUT |
VCC |
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VF1 |
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VLIM |
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VR |
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THERMAL |
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REFERENCE |
VTH |
PROTECTION |
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SN |
E |
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LGND |
GND |
Table 2. |
Pin function |
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Pin number |
Name |
Function |
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1, 5 |
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LGND |
Signal ground |
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2, 3, 4 |
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GND |
Emitter power ground |
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6 |
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E |
Enable(1) |
7 |
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VCC |
Logic supply voltage |
8 |
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BD |
Base darlington |
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9 |
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INPUT |
Logic input channel (internal pull down) |
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10 |
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FLAG |
Diagnostic output signal (open emitter) |
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Tab |
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HVC |
Primary coil output driver (open collector) |
1. When grounded the input is enabled
Doc ID 18022 Rev 1 |
5/19 |
Block diagram and pin description |
VB525SP-E |
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Figure 2. Connection diagram (top view)
E |
6 |
5 |
LGND |
VCC |
7 |
4 |
GND |
BD |
8 |
3 |
GND |
INPUT |
9 |
2 |
GND |
FLAG |
10 |
1 |
LGND |
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TAB |
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HVC |
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Note:
Pin 1 and pin 5 must be connected to pin2, pin 3 and pin 4
6/19 |
Doc ID 18022 Rev 1 |
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