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VB525SP-E
High voltage ignition coil driver power integrated circuit
Features
Type
VB525SP-E
Vcl
380 V
Icl
10 A
ICC
150 mA
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
Package
PowerSO-10
September 2013
Tube
VB525SP-E
Order codes
Tape and real
VB525SPTR-E
Doc ID 18022 Rev 2
1/19
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1

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Contents
Contents
VB525SP-E
1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Absolute maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 Principle of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2 Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.3 Overvoltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.1 ECOPACK® packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.2 PowerSO-10 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.3 Packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2/19 Doc ID 18022 Rev 2

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VB525SP-E
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pin function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
PowerSO-10 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Doc ID 18022 Rev 2
3/19

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List of figures
List of figures
VB525SP-E
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Connection diagram (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Switching time for inductive load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Flag current vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Single pulse avalanche energy capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Self clamped inductive switching current vs time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Low voltage clamp feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
PowerSO-10 package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
PowerSO-10 suggested pad layout and tube shipment (no suffix). . . . . . . . . . . . . . . . . . . 17
PowerSO-10 tape and reel shipment (suffix “TR”) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4/19 Doc ID 18022 Rev 2

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VB525SP-E
Block diagram and pin description
1 Block diagram and pin description
Figure 1. Block diagram
VCC
BD
VIN
DRIVER
QUASI PROP.
BASE CURRENT
DIAGNOSTIC
OUTPUT
LIMITER
VCC
VF1
VR
-
REFERENCE
VLIM
VTH
THERMAL
PROTECTION
HVC
RSENSE
SN
E
LGND
GND
Table 2. Pin function
Pin number
Name
1, 5 LGND
2, 3, 4
GND
6E
7 VCC
8 BD
9 INPUT
10 FLAG
Tab HVC
1. When grounded the input is enabled
Function
Signal ground
Emitter power ground
Enable(1)
Logic supply voltage
Base darlington
Logic input channel (internal pull down)
Diagnostic output signal (open emitter)
Primary coil output driver (open collector)
Doc ID 18022 Rev 2
5/19