TOP204YA View Datasheet(PDF) - Power Integrations, Inc

Part Name

Description

Manufacturer

TOP204YA

TOPSwitch® Family Three-terminal Off-line PWM Switch

Power Integrations, Inc 

TOP200-4/14

BENCH TEST PRECAUTIONS FOR EVALUATION OF ELECTRICAL 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.

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

that the continuous DRAIN voltage

waveform may be observed. It is

recommended that the VC power supply 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.

Typical Performance Characteristics

BREAKDOWN vs. TEMPERATURE

1.1

1.0

0.9

-50 -25 0 25 50 75 100 125 150

Junction Temperature (°C)

CURRENT LIMIT vs. TEMPERATURE

1.2

1.0

0.8

0.6

0.4

0.2

0

-50 -25 0 25 50 75 100 125 150

Junction Temperature (°C)

14 D

7/96

FREQUENCY vs. TEMPERATURE

1.2

1.0

0.8

0.6

0.4

0.2

0

-50 -25 0 25 50 75 100 125 150

Junction Temperature (°C)

IC vs. DRAIN VOLTAGE

2

VC = 5 V

1.6

1.2

0.8

0.4

0

0

20 40 60 80 100

Drain Voltage (V)

Share Link: