TOP222G-TL データシートの表示（PDF） - Power Integrations, Inc

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TOP222G-TL

Three-Terminal Off-Line PWM Switch

Power Integrations, Inc 

TOP221-227

CONTROL

VC

ZC

SHUNT REGULATOR/

ERROR AMPLIFIER

5.7 V

5.7 V

4.7 V

0

1

SHUTDOWN/

AUTO-RESTART

+

-

INTERNAL

SUPPLY

÷8

DRAIN

IFB

OSCILLATOR

DMAX

CLOCK

SAW

RE

THERMAL

SHUTDOWN

POWER-UP

RESET

S

Q

R

Q

-

+

PWM

COMPARATOR

S

Q

R

Q

VILIMIT

CONTROLLED

TURN-ON

GATE

DRIVER

LEADING

EDGE

BLANKING

MINIMUM

ON-TIME

DELAY

SOURCE

Figure 2. Functional Block Diagram.

Pin Functional Description

DRAIN Pin:

Output MOSFET drain connection. Provides internal bias

current during start-up operation via an internal switched high-

voltage current source. Internal current sense point.

CONTROL Pin:

Error amplifier and feedback current input pin for duty cycle

control. Internal shunt regulator connection to provide internal

bias current during normal operation. It is also used as the

connection point for the supply bypass and auto-restart/

compensation capacitor.

SOURCE Pin:

Y package – Output MOSFET source connection for high

voltage power return. Primary side circuit

common and reference point.

P and G package – Primary side control circuit common and

reference point.

SOURCE (HV RTN) Pin: (P and G package only)

Output MOSFET source connection for high voltage power return.

2

D

7/01

PI-1935-091696

Tab Internally

Connected to SOURCE Pin

Y Package (TO-220/3)

DRAIN

SOURCE

CONTROL

SOURCE 1

8 SOURCE (HV RTN)

SOURCE 2

7 SOURCE (HV RTN)

SOURCE 3

6 SOURCE (HV RTN)

CONTROL 4

5 DRAIN

P Package (DIP-8)

G Package (SMD-8)

PI-2084-040401

Figure 3. Pin Configuration.

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