TNY263_04 POWERINT [Power Integrations, Inc.], TNY263_04 Datasheet - Page 6

• Manufacturer Part Number: TNY263_04
• Description: Enhanced, Energy Efficient, Low Power Off-line Switcher
• Manufacturer: POWERINT [Power Integrations, Inc.]

applications with and without an external resistor (2 MΩ) connected
to the EN/UV pin.
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.
Figure 9. TinySwitch-II Operation at Very Light Load.
Figure 10. TinySwitch-II Power-up with Optional External UV
200
100
400
200
10
6
0
5
0
0
TNY263-268
V
I
CLOCK
D
DRAIN
0
DRAIN
MAX
V
E
4/04
V
EN
V
V
DC-INPUT
BYPASS
DRAIN
Resistor (2 M Ω ) Connected to EN/UV Pin.
Time (ms)
1
PI-2661-072400
2
200
100
200
100
400
200
400
300
200
100
200
100
Figure 11. TinySwitch-II Power-up without Optional External UV
400
300
200
100
Figure 13. Slow Power-down Timing with Optional External
10
0
5
0
0
0
0
0
0
Figure 12. Normal Power-down Timing (without UV).
0
0
0
V
V
V
DC-INPUT
DRAIN
BYPASS
Resistor Connected to EN/UV Pin.
(2 M Ω ) UV Resistor Connected to EN/UV Pin.
Time (ms)
Time (s)
Time (s)
2.5
.5
1
V
V
V
DC-INPUT
DC-INPUT
V
DRAIN
DRAIN
5
1
2