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CS340602 데이터시트 PDF




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CS340602 데이터시트, 핀배열, 회로
CS3361
Alternator Voltage Regulator
FET Driver
Description
Features
The CS3361 integral alternator reg-
ulator integrated circuit provides
the voltage regulation for automo-
tive, 3-phase alternators.
It drives an external logic level N
channel enhancement power FET
for control of the alternator field
current. In the event of a charge
fault, a lamp output pin is provided
to drive an external darlington tran-
sistor capable of switching on a
fault indicator lamp. An overvolt-
age or no Stator signal condition
activates the lamp output.
The CS3361 is available in a 14 lead
SO package.
s Drives Logic Level Power
NFET
s 80V Load Dump
s Temperature Compensated
Regulation Voltage
s Shorted Field Protection
Duty Cycle, Self Clearing
Absolute Maximum Ratings
Storage Temperature Range .....................................................-55°C to +165°C
Junction Temperature Range ....................................................-40°C to +150°C
Continuous Supply..........................................................................................27V
ICC Load Dump .........................................................................................400 mA
Lead Temperature Soldering
Reflow (SMD styles only)............60 sec. max above 183°C, 230°C peak
Block Diagram
VCC
ENABLE
IGN
Series
Regulator
Load Dump
Detection and
Protection
VSUP
Sense
–+
LAMP
+
VREG
OSC
RS Flop
Set S
R Dominate
QR
Lamp
Indicator
OSC
VSUP
Device
Driver
+
VHV
DELAY
SC
ENABLE
STATOR
Power Up
VSUP
STATOR
Timer
STATOR
Package Options
14 Lead SO
DD 1
SC
Gnd NC
NC
OSC
VCC
Sense
Lamp
NC
STATOR
NC
NC IGN
Rev. 1/29/99
Gnd
1
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Web Site: www.cherry-semi.com
A ® Company




CS340602 pdf, 반도체, 판매, 대치품
Application Information
The CS3361 is designed for use in an alternator charging
system.
In a standard alternator design (Figure 1), the rotor carries
the field winding. An alternator rotor usually has several N
and S poles. The magnetic field for the rotor is produced by
forcing current through a field or rotor winding. The Stator
windings are formed into a number of coils spaced around
a cylindrical core. The number of coils equals the number
of pairs of N and S poles on the rotor. The alternating cur-
rent in the Stator windings is rectified by the diodes and
applied to the regulator. By controlling the amount of field
current, the magnetic field strength is controlled and hence
the output voltage of the alternator.
STATOR
Winding
FIELD Winding
A
S
FIELD
Regulator
I
Lamp
Indicator
IGNITION
SWITCH
Gnd
BATTERY
Referring to Figure 2, a typical application diagram, the
oscillator frequency is set by an external capacitor connect-
ed between OSC and ground. The sawtooth waveform
ramps between 1V and 3V and provides the timing for the
system. For the circuit shown the oscillator frequency is
approximately 140Hz. The alternator voltage is sensed at
Terminal A via the resistor divider network R1/R2 on the
Sense pin of the IC. The voltage at the sense pin determines
the duty cycle for the regulator. The voltage is adjusted by
potentiometer R2. A relatively low voltage on the sense pin
causes a long duty cycle that increases the Field current. A
high voltage results in a short duty cycle.
The ignition Terminal (I) switches power to the IC through
the VCC pin. The Stator pin monitors the voltage from the
stator and senses a stopped engine condition. It drives the
Lamp pin high after the stator timeout expires. The Lamp
pin also goes high when an overvoltage condition is detect-
ed on the sense pin. This causes the darlington lamp drive
transistor to switch on and pull current through the lamp.
If the system voltage continues to increase, the field and
lamp output turn off as in an overvoltage or load dump
condition.
The SC or Short Circuit pin monitors the field voltage. If
the drive output and the SC voltage are simultaneously
high for a predetermined period, a short circuit condition is
assumed and the output is disabled. The regulator is forced
to a minimum short circuit duty cycle.
Figure 1. IAR System Block Diagram
RECTIFIER
STATOR
S
R1
100k
C3
.047µF
R2
R3
250
*C2
10µF
C1 18k
0.1µF R4
VCC STATOR SC
Sense
50k
OSC
Driver
R5
10k
C4
0.022µF
IGN LAMP
R6
20k
Gnd
R7 10
R9
2.4k
A
D1
F
Q1
Logic level N
channel
enhancement
power FET
POWER
GROUND
I
Power
Darlington
FIELD
Lamp
Indicator
R10
510
IGNITION
SWITCH
BATTERY
Figure 2. Typical Application Diagram
*Note: C2 optional for reduced jitter.
4

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부품번호상세설명 및 기능제조사
CS340602

Fast Recovery Single Diode Modules 20 Amperes/600-1200 Volts

Powerex Power Semiconductors
Powerex Power Semiconductors
CS340602

Fast Recovery Single Diode Modules 20 Amperes/600-1200 Volts

Powerex Power Semiconductors
Powerex Power Semiconductors

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