TOP259YN-TL datasheet(6/50 Pages) POWERINT

6 / 50 page

Rev. M 12/21

TOP252-262

www.power.com

Pin Functional Description

DRAIN (D) Pin:

High-voltage power MOSFET DRAIN pin. The internal start-up

bias current is drawn from this pin through a switched high-

voltage current source. Internal current limit sense point for

drain current.

CONTROL (C) 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.

EXTERNAL CURRENT LIMIT (X) Pin (Y, M, E and L package):

Input pin for external current limit adjustment and remote

ON/OFF. A connection to SOURCE pin disables all functions on

this pin.

Figure 4.

Pin Configuration (Top View).

Input

Voltage

CONTROL

RIL

RLS

12 k

Ω

4 M

Ω

VUV = IUV × RLS + VV (IV = IUV)

VOV = IOV × RLS + VV (IV = IOV)

For RLS = 4 MΩ

DCMAX@100 VDC = 76%

DCMAX@375 VDC = 41%

For RIL = 12 kΩ

ILIMIT = 61%

See Figure 55b for

other resistor values

(RIL) to select different

ILIMIT values.

UV = 102.8 VDC

OV = 451 VDC

Figure 5.

TOP254-258 Y and All M/E/L Package Line Sense and Externally Set

Current Limit.

PI-4712-120307

Input

Voltage

VUV = IUV × RLS + VM (IM = IUV)

VOV = IOV × RLS + VM (IM = IOV)

For RLS = 4 MΩ

VUV = 102.8 VDC

VOV = 451 VDC

DCMAX@100 VDC = 76%

DCMAX@375 VDC = 41%

CONTROL

RLS

4 M

Ω

Figure 7.

P/G Package Line Sense.

Input

Voltage

CONTROL

RIL

RLS

12 k

Ω

4 M

Ω

VUV = IUV × RLS + VV (IV = IUV)

VOV = IOV × RLS + VV (IV = IOV)

For RLS = 4 MΩ

DCMAX@100 VDC = 76%

DCMAX@375 VDC = 41%

For RIL = 12 kΩ

ILIMIT = 61%

See Figure 55b for

other resistor values

(RIL) to select different

ILIMIT values.

UV = 102.8 VDC

OV = 451 VDC

Figure 6.

TOP259-261 Y Package Line Sense and External Current Limit.

VOLTAGE MONITOR (V) Pin (Y & M package only):

Input for OV, UV, line feed forward with DC

MAX reduction, output

overvoltage protection (OVP), remote ON/OFF and device reset.

A connection to the SOURCE pin disables all functions on this pin.

MULTI-FUNCTION (M) Pin (P & G packages only):

This pin combines the functions of the VOLTAGE MONITOR (V)

and EXTERNAL CURRENT LIMIT (X) pins of the Y package into

one pin. Input pin for OV, UV, line feed forward with DC

MAX

PI-4644-091108

Tab Internally

Connected to

SOURCE Pin

Tab Internally

Connected to

SOURCE Pin

Lead Bend

Outward from Drawing

(Refer to eSIP-7F Package

Outline Drawing)

Exposed Pad

(Hidden)

Internally

Connected to

SOURCE Pin

Y Package (TO-220-7C)

P and G Package

M Package

Note: Y package for TOP259-261

Note: Y package for TOP254-258

E Package (eSIP-7C)

L Package (eSIP-7F)

Y Package (TO-220-7C)

TOP259YN-TL датащи(PDF) 6 Page - Power Integrations, Inc.

TOP259YN-TL датащи(HTML) 6 Page - Power Integrations, Inc.

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

датащи скачать

ссылки URL