TOP200YN Datasheet, PDF (13/16 Pages) Power Integrations, Inc. – Family Three-terminal Off-line PWM Switch

TOP200-4/14
NOTES:
1. For specifications with negative values, a negative temperature coefficient corresponds to an increase in
magnitude with increasing temperature, and a positive temperature coefficient corresponds to a decrease in
magnitude with increasing temperature.
2. It is possible to start up and operate TOPSwitch at DRAIN voltages well below 36 V. However, the CONTROL pin
charging current is reduced, which affects start-up time and auto-restart frequency and duty cycle. Refer to the
characteristic graph on CONTROL pin charge current (I ) vs. DRAIN voltage for low voltage operation
C
characteristics.
t2
t1
HV
90%
90%
DRAIN
VOLTAGE
0V
DC = ^t1
t2
10%
PI-1215-091794
Figure 12. TOPSwitch Duty Cycle Measurement.
TYPICAL CONTROL PIN I-V CHARACTERISTIC
120
100
80
Latched Shutdown
Trigger Current (45 mA)
60
40
Dynamic
Impedance
=
1
Slope
20
0
0
2
4
6
8
10
CONTROL Pin Voltage (V)
Figure 13. TOPSwitch CONTROL Pin I-V Characteristic.
DRAIN
SOURCE
CONTROL
TOPSwitch
0.1 µF
47 µF
470 Ω
5W
S2
470 Ω
S1
0-50 V
40 V
NOTE: This test circuit is not applicable for current limit or output characteristic measurements.
PI-1126-041994
Figure 14. TOPSwitch General Test Circuit.
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