top100 Power Integrations, Inc., top100 Datasheet - Page 15

• Manufacturer Part Number: top100
• Description: Three-terminal Off-line Pwm Switch
• Manufacturer: Power Integrations, Inc.

Typical Performance Characteristics
The following precautions should be
followed when testing TOPSwitch by
itself outside of a power supply. The
schematic shown in Figure 14 is
suggested for laboratory testing of
TOPSwitch.
When the DRAIN supply is turned on,
the part will be in the auto-restart mode.
BENCH TEST PRECAUTIONS FOR EVALUATION OF ELECTRICAL CHARACTERISTICS
CURRENT LIMIT vs. TEMPERATURE
BREAKDOWN vs. TEMPERATURE
1.2
1.0
0.8
0.6
0.4
0.2
1.1
1.0
0.9
0
-50 -25
-50 -25
Junction Temperature ( C)
Junction Temperature ( C)
0
0
25
25
50
50
75 100 125 150
75 100 125 150
The control pin voltage will be oscillating
at a low frequency from 4.7 to 5.7 V and
the DRAIN is turned on every eighth
cycle of the CONTROL pin oscillation.
If the CONTROL pin power supply is
turned on while in this auto-restart mode,
there is only a 12.5% chance that the
control pin oscillation will be in the
correct state (DRAIN active state) so
FREQUENCY vs. TEMPERATURE
1.6
1.2
0.8
0.4
1.2
1.0
0.8
0.6
0.4
0.2
2
0
0
0
-50 -25
I
C
V C = 5 V
vs. DRAIN VOLTAGE
Junction Temperature ( C)
20
that the continuous DRAIN voltage
waveform may be observed.
recommended that the V
be turned on first and the DRAIN power
supply second if continuous drain voltage
waveforms are to be observed. The
12.5% chance of being in the correct
state is due to the 8:1 counter.
Drain Voltage (V)
0
40
25
50
60
75 100 125 150
TOP100-4
80
C
power supply
100
7/96
E
15
It is