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T2117 Datasheet

  • T2117

  • Zero-Voltage Switch with Adjustable Ramp

  • 11頁

  • ATMEL   ATMEL

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T2117
Zero-Voltage Switch with Adjustable Ramp
Description
The integrated circuit, T2117, is designed as a zero-
voltage switch in bipolar technology. It is used to control
resistive loads at mains by a triac in zero-crossing mode.
A ramp generator allows power control function by
period group control, whereas full-wave logic guarantees
that full mains cycles are used for load switching.
Features
D
Direct supply from the mains
D
Current consumption
鈮?/div>
0.5 mA
D
Very few external components
D
Full-wave drive 鈥?no DC current component in the
load circuit
D
Negative output current pulse typ. 100 mA 鈥?/div>
short-circuit protected
D
Simple power control
D
Ramp generator
D
Reference voltage
Applications
D
Full-wave power control
D
Temperature regulation
D
Power blinking switch
Block Diagram
D
1
220 kW
(250 V~)
R
2
(R
sync
)
R
1
BYT41M
18 kW/
2W
鈥揤
S
2
1
R
5
12 kW
max
100 kW
min
R
6
18 kW
N
Reference voltage
1.4 V
3
4
+
+
鈥?Comparator
6
Full-wave logic
Pulse
amplifier
R
3
Ramp
generator
8
Synchronization
5
7
Supply
GND
C
1
100
mF/
16 V
TIC
236N
100
W
V
M
=
230 V~
MT2
MT1
Load
1000 W
L
C
2
2.2
mF/
10 V
R
4
100 kW
T2117
Figure 1. Block diagram with typical circuit, period group control 0 to 100%
Ordering Information
Extended Type Number
T2117-3AS
T2117-TAS
T2117-TAQ
Package
DIP8
SO8
SO8
Tube
Tube
Taped and reeled
Remarks
Rev. A2, 17-Dec-01
1 (11)

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