CS452GTVA5 [CHERRY]
2.4A/4.4A Injector Solenoid Driver; 2.4A / 4.4A喷油器电磁阀驱动
| 型号： | CS452GTVA5 |
| 厂家： | 
CHERRY SEMICONDUCTOR CORPORATION |
| 描述： | 2.4A/4.4A Injector Solenoid Driver |
| 文件： | 总5页 (文件大小：159K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CS452/453
2.4A/4.4A Injector Solenoid Driver
Description
Features
The CS452/453 is a monolithic inte-
the load current by a 4:1 ratio and
operates as a constant current
source. This condition holds the
injector open and reduces system
Microprocessor
Compatible Inputs
■
grated circuit designed for medium
current solenoid driver applica-
tions. Its typical function is to sup-
■ On-Chip Power Device
2.4A Peak, Typical CS-452
4.4A Peak, Typical CS453
ply full battery voltage to fuel injec- power dissipation.
tor(s) for rapid current rise, in order
to produce positive injector open-
ing.
Other solenoid or relay applications
can be equally well served by the
CS452/453. Two high impedance
inputs are provided which permit a
variety of control options and can
be driven by TTL or CMOS logic.
■ Low Thermal Resistance
To Grounded Tab
When load current reaches a preset
level (2.4A for CS452, or 4.4A for
CS453), the injector driver reduces
■ 60V Peak Transient
Voltage
Absolute Maximum Ratings
■ Low Saturation Voltage
■ Operates Over a 4.5V to
Power Supply Voltage (VCC) .........................................................................24V
VIN..........................................................................................................-6.0 to 24V
Control ..................................................................................................-6.0 to 24V
Peak Transient Voltage (46V Load Dump)..................................................60V
Internal Regulator Current.........................................................................50mA
Junction Temperature Range....................................................-40¡C to +150¡C
Operating Temperature Range (Tab Temperature)..............-40¡C to +125¡C
Storage Temperature Range .....................................................-65¡C to +150¡C
Lead Temperature Soldering
24V Battery Range
Wave Solder (through hole styles only)...10 sec. max, 260¡C peak
Package Options
Typical Application Diagram
5 Lead TO-220
Tab (Gnd)
300W
19kW
VBAT
4.5V to 24V
(60V Transient)
IOUT
V
CC
VIN
OUT
V
IN
Injector
CS452/453
CONTROL
40VZ (max)
1 VIN
2 CONTROL
3 Gnd
1
Gnd
1kW
4 OUT
5 VCC
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Email: info@cherry-semi.com
Web Site: www.cherry-semi.com
Rev. 12/18/97
1
A
¨
Company
VBAT= 12 VDC, TA = 25ûC, test circuit of Test Circuit diagram, unless noted
Electrical Characteristics:
CHARACTERISTIC
MIN
TYP
MAX
UNIT
Output Peak Current (Ipk
)
CS452
CS453
CS452
CS453
1.7
3.6
0.50
0.95
42
2.4
4.4
0.60
1.12
50
2.9
5.2
0.70
1.25
A
A
A
A
V
Output Sustaining Current (Isus
)
V(BR)CEO(sus) @ 1mA
Output Voltage in Saturated Mode
CS452 @ 1.5A
CS453 @ 3.0A
Internal Regulated Voltage
1.2
1.6
6.9
V
V
V
(@VCC, Test Circuit diagram)
Input ÒonÓ Threshold Voltage
Input ÒoffÓ Threshold Voltage
Input ÒonÓ Current
1.4
1.3
2.0
V
V
0.7
1.2
@ VIN = 1.4VDC
@ VIN = 5.0VDC
35
220
1.5
µA
µA
V
CONTROL ÒonÓ Threshold Voltage
CONTROL Current
1.8
-50
CONTROL = 0.8VDC
-5
µA
µA
µs
µs
µs
µs
µs
µs
µs
CONTROL = 5.0VDC
Input Turn On Delay (tl)
Ipk sense to Isus delay (tp)
CONTROL Signal Delay (tt)
1.0
0.5
60
1.0
15
Input Turn Off from Saturated Mode Delay (ts)
Input Turn Off from Sustain Mode Delay (td)
Output Voltage Rise Time (tv)
1.0
0.2
0.4
0.6
Output Current Fall Time (tf) 4.0A
1.0
Package Lead Description
PACKAGE LEAD #
LEAD SYMBOL
FUNCTION
TO-220
1
VIN
Switches the injector driver on and off.
Acts to disable OUT when high.
Ground connection.
2
3
4
5
CONTROL
Gnd
OUT
Output Drive current.
VCC
Supply voltage to IC. VCC is connected to VBAT through a series
resistor (300½ typ.)
Test Circuit
VBAT
300 W/2W
RL
1.2
High
Injector
Load
I
VCC
CONTROL
S2
2.0
mH
Low
CS452/453
S1
V
OUT
IN
5 Vp-p
250Hz
Square
Wave
40 V/10 W
Zener
Gnd
0-5.0 VDC
2
Circuit Description
Inductive actuators such as automotive electronic fuel
Input Signal
IN
injectors, relays, solenoids and hammer drivers can be
powered more efficiently by providing a high current
drive until actuation (pull-in) occurs and then decreasing
the drive current to a level which will sustain actuation.
Pull-in and especially dropout times of the actuators are
also improved.
V
>1.4V
0
2.0
4.0ms
Load
Current
Ipk
The fundamental output characteristic of the CS452/453
provides a low impedance saturated power switch until
the load current reaches a predetermined high-current
level and then changes to a current source of lower magni-
tude until the device is turned off. This output characteris-
tic allows the inductive load to control its actuation time
during turn-on while minimizing power and stored energy
during the sustain period, thereby promoting a fast turn-
off time.
Ipk
Ipk (SENSE)
Output
Current
Isus
Automotive injectors at present time come in two types.
The large throttle body injectors have an inductance of
about 2.0mH and an impedance of 1.2½ and require the
CS453 driver. The smaller type, popular worldwide, have
an inductance of 4.0mH and an impedance of 2.4½ and
needs about a 2.0A pulse for good results, which can be
met with the CS452. Some designs are planned which
employ two of the smaller types in parallel. The induc-
tance of the injectors are much larger at low current,
decreasing due to armature movement and core saturation
to the values above at rated current.
ti
tp
td
Output
VZ
Voltage
VBAT
VBAT - (Isus RL)
VSAT
VZ Ipk
Power
Dissipation
VZ Isus
Operating frequencies range from 5.0Hz to 250Hz depend-
ing on the injector location and engine type. Duty cycle in
some designs reaches 80%.
(VBAT - Isus RL) Isus
VSAT Ipk
Figure 1. Operating Waveforms (Max. Frequency 250Hz, CONTROL
Grounded)
Timing Diagrams
Input Voltage and Output Current vs. Time
CS453
CS452
10
5
10
5
4
3
2
1
0
2.4
1.8
1.2
0.6
0
0
0
IOUT
IOUT
0
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6
7
8
9
10
3
Application Information
The CS452/453 is provided with an input lead (VIN) which
Input
turns the injector driver ÓonÒ and ÓoffÒ. This lead has a
nominal trip level of 1.4V and an input impedance of
20k½. It is internally protected against negative voltages
and is compatible with TTL and most other logic.
>1.4V
>1.5V
Signal
V
IN
Control
There is also a control lead (CONTROL) which if held low
or grounded, permits the device to operate in saturation to
Ipk(sense), where it will switch to Isus automatically. If CON-
TROL is brought high (>1.5V), the output drive stage is
turned off, regardless of what state the input (VIN) is at,
and the output current goes to zero.
Signal
CONTROL
Ipk
Output
Current
Isus
tl
Figure 1 shows the operating waveforms for the simplest
mode; i.e., with CONTROL grounded. When the driver is
turned on, the current ramps up to the peak current sense
level, where some overshoot occurs because of internal
delay. The CS452/453 then reduces its output to Isus. The
fall time of the device is very rapid (²1.0µs), but the decay
of the load current takes 150 to 220 µs, while dumping the
load energy into the protection Zener clamp.
Figure 4. Application of CONTROL
Provided in Figures 2,3, and 4 are definitions of the
switching intervals specified in the Electrical
Characteristics. Figure 3 shows that the critical switching
parameters stay under control at elevated temperatures.
In those applications where high voltage transients may
occur while the output lead (OUT) is in the Isus mode,
excessive instantaneous power dissipation may occur,
causing device failure. When this condition occurs, the
control lead (CONTROL) can be used to shut off the out-
put stage in order to protect the CS452/453. As long as
CONTROL is in the high state (>1.5 volts, typ.), the output
will remain off. One method of sensing the supply voltage
and controlling CONTROL is to use a resistor divider
between the supply voltage and ground with CONTROL
connected to the resistor divider (see Typical Application
diagram).
It is essential that the Zener voltage be lower than the
V(BR)CEO(sus), but not so low as to greatly stretch the load
current decay time. Without the zener, the discharge of the
load energy would be totally into the CS452/453, which, for
the high current applications, could cause the device to fail.
Also in figure 1 is the graphically derived instantaneous
power dissipation of the CS452/453. It shows that, for
practical purposes, the worst case dissipation is less than
(Isus) (VBAT) (duty cycle).
Another application option of the control lead is to use it
to accomplish an enable/disable function. Since CON-
TROL is compatible with TTL and CMOS logic levels, a
logic low will enable the output, and allow it to follow the
input signal at VIN. If CONTROL is held at a logic high,
the output will be disabled regardless of the state of the
input signal.
Ipk
90%
Output
Output
Current
Vl Turn
Off
Voltage
10%
0
ts
If the control function is not being used in the application,
it must be grounded or otherwise placed in a logic low
state. If CONTROL is left open, the output stage will
remain off.
tv tf
0
1.0
2.0
3.0 ms
Figure 2. Switching Waveforms (Expanded Time Scale)
The output current in the Isus mode should be oscillation
free. There is a possibility that in a given application, the
output current could oscillate for a small fraction of parts.
If this was to occur, the remedy is place a capacitor from
OUT to Ground. The value of the capacitor should not
exceed 0.01µF.
2.0
ts
1.5
1.0
0.5
0
tf
tv
-40 -20
0
20 40 60 80 100 120 140
Case Temperature (ûC)
Figure3. Switching Speed vs. Temperature
4
Package Specification
PACKAGE THERMAL DATA
5 Lead TO-220
PACKAGE DIMENSIONS IN mm (INCHES)
Thermal Data
RQJC
RQJA
typ
typ
2.6
50
¡C/W
¡C/W
5 Lead TO-220 (Straight)
5 Lead TO-220 (Horizontal)
4.83 (.190)
4.06 (.160)
10.54 (.415)
9.78 (.385)
1.40 (.055)
1.14 (.045)
3.96 (.156)
3.71 (.146)
2.87 (.113)
2.62 (.103)
1.40 (.055)
1.14 (.045)
4.83 (.190)
10.54 (.415)
4.06 (.160)
14.99 (.590)
14.22 (.560)
9.78 (.385)
6.55 (.258)
5.94 (.234)
3.96 (.156)
3.71 (.146)
2.87 (.113)
2.62 (.103)
6.55 (.258)
5.94 (.234)
14.99 (.590)
14.22 (.560)
2.77 (.109)
6.83 (.269)
1.68
2.92 (.115)
2.29 (.090)
0.56 (.022)
(.066)
TYP
0.81(.032)
0.36 (.014)
6.60 (.260)
5.84 (.230)
1.70 (.067)
14.22 (.560)
13.72 (.540)
6.81(.268)
1.02 (.040)
0.76 (.030)
0.56 (.022)
0.36 (.014)
1.83(.072)
1.57(.062)
1.02(.040)
0.63(.025)
6.93(.273)
6.68(.263)
2.92 (.115)
2.29 (.090)
5 Lead TO-220 (Vertical)
4.83 (.190)
4.06 (.160)
3.96 (.156)
3.71 (.146)
10.54 (.415)
9.78 (.385)
1.40 (.055)
1.14 (.045)
6.55 (.258)
5.94 (.234)
2.87 (.113)
2.62 (.103)
14.99 (.590)
14.22 (.560)
1.78 (.070)
2.92 (.115)
2.29 (.090)
8.64 (.340)
7.87 (.310)
4.34 (.171)
7.51 (.296)
0.56 (.022)
0.36 (.014)
1.68
(.066) typ
1.70 (.067)
6.80 (.268)
.94 (.037)
.69 (.027)
Ordering Information
Description
Part Number
CS452GT5
CS452GTVA5
CS452GTHA5
CS453GT5
5 Lead TO-220 Straight
5 Lead TO-220 Vertical
5 Lead TO-220 Horizontal
5 Lead TO-220 Straight
5 Lead TO-220 Vertical
5 Lead TO-220 Horizontal
Ch erry Sem icon du ctor Corporation reserves th e
righ t to m ake ch an ges to th e specification s with ou t
n otice. Please con tact Ch erry Sem icon du ctor
Corporation for th e latest available in form ation .
CS453GTVA5
CS453GTHA5
Rev. 12/18/97
© 1999 Cherry Semiconductor Corporation
5
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