TOP100-4 Ver la hoja de datos (PDF) - Power Integrations, Inc

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TOP100-4

Three-terminal Off-line PWM Switch

Power Integrations, Inc 

TOP100-4

Specification Symbol

Conditions

(Unless Otherwise Specified)

See Figure 14

VS2 = 16 V R1 = 0 Ω

SOURCE = 0 V

Tj = -40 to 125°C

LOW INPUT VOLTAGE OPERATION (See Note 3)

DRAIN Supply

Voltage

CONTROL Pin

Charging Current

See Note 4

T

j

=

25°C

VC= 0 V

VC= 5 V

Auto-restart

Duty Cycle

S1/Open

Min Typ Max

16

-2.3 -1.65 -1

-1.2 -0.64 -0.28

4

8

Units

Volts

mA

mA

%

Auto-restart

Frequency

S1/Open

0.85

Hz

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. Refer to the "Low Input

Voltage" Specification section for details.

3. This section specifies only parameters affected by low input voltage operation (Drain Voltages less than 36 V). All

other parameters remain unchanged.

4. For low input voltage applications, the primary peak current could be set to a lower value than the current limit to

increase efficiency. Refer to the Output Characteristics graph (Drain Current vs. Drain Voltage). The voltage

across the transformer primary during the ON time is the difference between the input voltage and the drain

voltage (VDS(ON)).

For example, if the input voltage is 16 VDC and a TOP104 (3.3A minimum current limit) is used at a primary peak

current of 1A. Then the (VDS(ON)) is 3 V at 100°C and the energizing voltage across the transformer primary is

13 V.

13 E

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