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ACS108-6S 데이터시트 PDF




STMicroelectronics에서 제조한 전자 부품 ACS108-6S은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 ACS108-6S 기능
기능 Overvoltage protected AC switch
제조업체 STMicroelectronics
로고 STMicroelectronics 로고


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ACS108-6S 데이터시트, 핀배열, 회로
ACS108-6S
Overvoltage protected AC switch (ACS™)
Features
Needs no external protection snubber or
varistor
Enables equipment to meet IEC 61000-4-5
Reduces component count by up to 80%
Interfaces directly with the micro-controller
Common package tab connection supports
connection of several alternating current
switches (ACS) on the same cooling pad
Integrated structure based on A.S.D.®
technology
Overvoltage protection by crowbar technology
High noise immunity - static dV/dt > 500 V/µs
Applications
Alternating current on/off static switching in
appliances and industrial control systems
Drive of low power high inductive or resistive
loads like:
– relay, valve, solenoid,
– dispenser, door lock
– pump, fan, low power motor
Description
The ACS108-6S belongs to the AC line switch
family. This high performance switch can control a
load of up to 0.8 A.
The ACS108-6S switch includes an overvoltage
crowbar structure to absorb the overvoltage
energy, and a gate level shifter driver to separate
the digital controller from the main switch. It is
triggered with a negative gate current flowing out
of the gate pin.
Datasheet production data
COM
OUT
G
SMBflat-3L
ACS108-6SUF
Figure 1. Functional diagram
OUT
G
COM
OUT
G
COM
Common drive reference to connect
to the mains
Output to connect to the load.
Gate input to connect to the controller
through gate resistor
Table 1. Device summary
Symbol
Value
IT(RMS)
VDRM/VRRM
IGT
0.8
600
10
Unit
A
V
mA
®: A.S.D. is a registered trademark of STMicroelectonics
TM: ACS is a trademark of STMicroelectronics
June 2012
This is information on a product in full production.
Doc ID 11962 Rev 4
1/12
www.st.com
12




ACS108-6S pdf, 반도체, 판매, 대치품
Characteristics
ACS108-6S
Figure 2.
Maximum power dissipation
versus on-state rms current
(full cycle)
Figure 3. On-state rms current versus tab
temperature (full cycle)
P(W)
0.9
0.8
180°
1.00 IT(RMS)(A)
0.90
0.7 0.80
0.6 0.70
0.60
0.5
0.50
0.4
0.40
0.3
0.30
0.2 0.20
0.1 0.10
IT(RMS)(A)
0.0 0.00
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
0
25
TC(°C)
50 75
100 125
Figure 4.
On-state rms current versus
ambient temperature
(free air convection)
1.0 IT(RMS)(A)
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0
25
Ta(°C)
50 75
100
Figure 5.
Relative variation of thermal
impedance junction to ambient
versus pulse duration
1.E+00 K = [Zth(j-a)/Rth(j-a)]
1.E-01
1.E-02
125 1.E-03
1.E-02
1.E-01
1.E+00
1.E+01
tp(s)
1.E+02 1.E+03
Figure 6.
Relative variation of, holding and
latching current versus junction
temperature
Figure 7.
Releative variation of IGT and VGT
versus junction temperature
IH, IL[Tj] / IH, IL[Tj = 25 °C]
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6 IH
0.4
IL
0.2
Tj(°C)
0.0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130
2.8 IGT, VGT[Tj] / IGT, VGT[Tj = 25 °C]
2.6
2.4
2.2
2.0
IGT
1.8
1.6
1.4
1.2
1.0 VGT
0.8
0.6
0.4
0.2
0.0
Tj(°C)
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130
4/12 Doc ID 11962 Rev 4

4페이지










ACS108-6S 전자부품, 판매, 대치품
ACS108-6S
Alternating current line switch - basic application
2 Alternating current line switch - basic application
The ACS108-6S switch is triggered by a negative gate current flowing from the gate pin G.
The switch can be driven directly by the digital controller through a resistor as shown in
Figure 16.
Thanks to its overvoltage protection and turn-off commutation performance, the ACS108-6S
switch can drive a small power high inductive load with neither varistor nor additional turn-off
snubber.
Figure 16. Typical application program
Power supply
Vss
MCU
Vdd
Rg
Valve
ACS108-6S
AC Mains
2.1
2.1.1
Protection against overvoltage: the best choice is ACS
In comparison with standard triacs, which are not robust against surge voltage, the
ACS108-6S is over-voltage self-protected, specified by the new parameter VCL. This feature
is useful in two operating conditions: in case of turn-off of very inductive load, and in case of
surge voltage that can occur on the electrical network.
High inductive load switch-off: turn-off overvoltage clamping
With high inductive and low RMS current loads the rate of decrease of the current is very
low. An overvoltage can occur when the gate current is removed and the OUT current is
lower than IH.
As shown in Figure 17 and Figure 18, at the end of the last conduction half-cycle, the load
current decreases (1). The load current reaches the holding current level IH (2), and the
ACS turns off (3). The water valve, as an inductive load (up to 15 H), reacts as a current
generator and an overvoltage is created, which is clamped by the ACS (4). The current flows
through the ACS avalanche and decreases linearly to zero. During this time, the voltage
across the switch is limited to the clamping voltage VCL. The energy stored in the inductance
of the load is dissipated in the clamping section that is designed for this purpose. When the
energy has been dissipated, the ACS voltage falls back to the mains voltage value (5).
Doc ID 11962 Rev 4
7/12

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부품번호상세설명 및 기능제조사
ACS108-6S

Overvoltage protected AC switch

STMicroelectronics
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