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SL441C の電気的特性と機能

SL441CのメーカーはZarlink Semiconductorです、この部品の機能は「ZERO VOLTAGE SWITCH」です。


製品の詳細 ( Datasheet PDF )

部品番号 SL441C
部品説明 ZERO VOLTAGE SWITCH
メーカ Zarlink Semiconductor
ロゴ Zarlink Semiconductor ロゴ 




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SL441C Datasheet, SL441C PDF,ピン配置, 機能
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SL441C
SL441C
ZERO VOLTAGE SWITCH
ADVANCE INFORMATION
DS3848 -1.0
The SL441C is a symmetrical burst control integrated
circuit in an 8 pin DIL package. When used with a triac, AC
power may be regulated by varying the number of mains
cycles applied to the load in a fixed timing period. The
device is especially suited to room temperature control
applications including panel heaters, fan heaters etc. Zero
Voltage Switching has the advantage of minimising radio
frequency interference.
FEATURES
s Balanced zero voltage point crossing detector,
spike filter and pulse generator for reliable
triggering of the triac.
s A period pulse generator and bistable which are
arranged to provide symmetrical burst control
and eliminate 1/2 wave firing. (EN50.006
BS5406,1976)
s A ramp generator whose output is used to modify
an internal reference voltage which is then
compared with the voltage appearing on the
thermistor to form a proportional control system.
The period of the ramp generator is defined
externally and may be chosen to limit 'lamp flicker'
in accordance with EN50.006/BS5406, 1976.
DP8
Fig.1 Pin Connections (top view)
s The comparison amplifier has inbuilt hysteresis
to eliminate switching jitter and a spike filter/
sampling circuit to provide high immunity to both
spikes and coherent 50Hz/60Hz.
s Thermistor malfunction may be sensed and power
automatically removed.
s A supply voltage sensing circuit which inhibits
firing pulses when the supply is inadequate to
guarantee proper circuit operation. This eliminates
stressing of the triac at switch-on.
Fig. 2 Block Schematic of SL441C
1

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SL441C pdf, ピン配列
Rthj - a = 200°C/W
Fig. 3 Power Dissipation
AVERAGE
POWER
IN LOAD
(%)
SL441C
CONTROL
VOLTAGE
(PIN 8)
0.2V SENSOR
MALFUNCTION
CIRCUIT TRIP
POINT
0V
OPERATIONAL
LIMIT
RAMP FINISH
100mV TYP.
4.25V RAMP
START
8.5V (V5)
14.7V (V3)
12V ABSOLUTE
MAX. RATING
Fig. 4 Control Characteristic of Pin 8
8.5V
TP = 0.69RC
TF = 1.09RC
TP = 0.69RC
TF = 1.09RC
R = PIN 6 OUTPUT C = CD CAPACITOR
IMPEDANCE (R6)
CONNECTED TO PIN 6
Fig. 5 Pulse Timing
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部品番号部品説明メーカ
SL441C

ZERO VOLTAGE SWITCH

Zarlink Semiconductor
Zarlink Semiconductor


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