TNY263-268 Ver la hoja de datos (PDF) - Power Integrations, Inc
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componentes Descripción
Fabricante
TNY263-268
Power Integrations, Inc
TNY263-268 Datasheet PDF : 24 Pages
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TNY263-268
VEN
CLOCK
DMAX
IDRAIN
VDRAIN
PI-2661-072400
Figure 9. TinySwitch-II Operation at Very Light Load.
During power-down, when an external resistor is used, the
power MOSFET will switch for 50 ms after the output loses
regulation. The power MOSFET will then remain off without
any glitches since the under-voltage function prohibits restart
when the line voltage is low.
Figure 12 illustrates a typical power-down timing waveform of
TinySwitch-II. Figure 13 illustrates a very slow power-down
timing waveform of TinySwitch-II as in standby applications.
The external resistor (2 MΩ) is connected to the EN/UV pin
in this case to prevent unwanted restarts.
200
100
V
DC-INPUT
0
10
5
V
BYPASS
0
400
200
V
DRAIN
0
0
1
2
Time (ms)
Figure 10. TinySwitch-II Power-up with Optional External UV
Resistor (2 MΩ) Connected to EN/UV Pin.
6
G
4/05
200
100
V
DC-INPUT
0
10
5
V
BYPASS
0
400
200
V
DRAIN
0
0
1
2
Time (ms)
Figure 11. TinySwitch-II Power-up without Optional External UV
Resistor Connected to EN/UV Pin.
200
V
100
DC-INPUT
0
400
300
200
V
DRAIN
100
0
0
.5
1
Time (s)
Figure 12. Normal Power-down Timing (without UV).
200
100
V
DC-INPUT
0
400
300
200
V
DRAIN
100
0
0
2.5
5
Time (s)
Figure 13. Slow Power-down Timing with Optional External
(2 MΩ) UV Resistor Connected to EN/UV Pin.
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