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零件编号
产品描述 (功能)
TOP221 查看數據表(PDF) - Power Integrations, Inc
零件编号
产品描述 (功能)
生产厂家
TOP221
Three-Terminal Off-Line PWM Switch
Power Integrations, Inc
TOP221 Datasheet PDF : 20 Pages
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TOP221-227
t2
t1
HV
90%
90%
DRAIN
VOLTAGE
10%
0V
Figure 10. TOPSwitch Duty Cycle Measurement.
D=
t1
t2
PI-2039-033001
120
100
80
60
40
Dynamic
Impedance
=
1
Slope
20
0
0
2
4
6
8
10
CONTROL Pin Voltage (V)
Figure 11. TOPSwitch CONTROL Pin I-V Characteristic.
1.3
tLEB (Blanking Time)
1.2
1.1
1.0
0.9
0.8
0.7
I
INIT(MIN)
@ 85 VAC
0.6
I
INIT(MIN)
@ 265 VAC
0.5
0.4
I
LIMIT(MAX)
@ 25 ˚C
0.3
I
LIMIT(MIN)
@ 25 ˚C
0.2
0.1
0
0 1 23 45 678
Time (
µ
s)
Figure 12. Self-protection Current Limit Envelope.
100 ns
t
LEB
∆
I
D
DRAIN
CURRENT
0A
PI-2031-040401
Figure 13. Example of
∆
I
D
on Drain Current Waveform with
Saturated Transformer.
14
Rev. G 08/16
www.power.com
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