TOP210 Ver la hoja de datos (PDF) - Power Integrations, Inc

Número de pieza

componentes Descripción

Fabricante

TOP210

Three-terminal Off-line PWM Switch

Power Integrations, Inc 

TOP209/210

CONTROL

VC

0

ZC

SHUNT REGULATOR/

ERROR AMPLIFIER

5.7 V

5.7 V

4.7 V

1

SHUTDOWN/

AUTO-RESTART

+

-

POWER-UP

RESET

INTERNAL

SUPPLY

÷8

IFB

OSCILLATOR

DMAX

CLOCK

SAW

RE

THERMAL

SHUTDOWN

WITH

HYSTERESIS

-

+

PWM

COMPARATOR

S

Q

R

Q

Figure 2. Functional Block Diagram.

DRAIN

VILIMIT

CONTROLLED

TURN-ON

GATE

DRIVER

LEADING

EDGE

BLANKING

MINIMUM

ON-TIME

DELAY

SOURCE

PI-1742-011796

Pin Functional Description

2 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

supply bypass and auto-restart/compensation capacitor

connection point.

SOURCE Pin:

Control circuit common, internally connected to output

MOSFET source.

SOURCE (HV RTN) Pin:

Output MOSFET source connection for high voltage return.

SOURCE 1

8 SOURCE (HV RTN)

N/C 2

N/C 3

7 N/C

6 N/C

CONTROL 4

5 DRAIN

P Package (DIP-8)

G Package (SMD-8)

Figure 3. Pin Configuration.

PI—2044-040901

2A

8/97

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