TOP224GN Datasheet, PDF (14/21 Pages) Power Integrations, Inc. – Three-terminal Off-line PWM Switch

TOP221-227
t2
t1
HV _90%
90%
DRAIN
VOLTAGE
0V
10%
D = ^t1
t2
Figure 10. TOPSwitch Duty Cycle Measurement.
PI-2039-040401
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
IINIT(MIN) @ 85 VAC
0.6
IINIT(MIN) @ 265 VAC
0.5
0.4
ILIMIT(MAX) @ 25 °C
0.3
ILIMIT(MIN) @ 25 °C
0.2
0.1
0
0 1 23 45 678
Time (µs)
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 D
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