TEA1501/N1 데이터 시트보기 (PDF) - Philips Electronics

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TEA1501/N1

Greeny; GreenChip™

Philips Electronics 

Philips Semiconductors

Greeny; GreenChip™

Preliminary specification

TEA1501

FEATURES

• Direct off-line operation (90 to 276 V AC)

• Low external component count

• Integrated high voltage startup current source for a fast

startup within 0.25 s

• Integrated power switch: 650 V, 40 Ω, 0.25 A

• Programmable primary peak current

• Data transfer from isolated secondary side to

non-isolated primary side via the transformer

• On/Off function replaces expensive mains switch by a

functional switch.

Green features

• Low current consumption in Off mode, typical 40 µA

• Efficient burst mode operation, for 0.1 to 3 W output

power.

Protection features

• Cycle-by-cycle current control with programmable

primary peak current

• Over-voltage protection

• Under-voltage lockout

• Over-temperature protection.

GENERAL DESCRIPTION

The TEA1501 (Greeny) is the low power member of the

GreenChip™ family and is especially designed for standby

switched mode power supply applications. Greeny

incorporates all the necessary functions for an efficient

and low cost power supply for 90 to 276 V AC universal

input. Greeny is a monolithic integrated circuit and is

available in a DIP8 package. The design is made in the

BCD_PowerLogic750 process and includes the high

voltage switching device. Using only 7 functional pins,

Greeny contains extensive control functions to form a

flexible and a reliable power supply with a minimum of

external components. Greeny operates in a flyback

topology (see Fig.1) with a fixed switching frequency,

constant primary peak current control and regulates the

output voltage in burst mode.

Applications include low power supplies and standby

power supplies as used in television, monitor, lighting

electronics and domestic appliances with an output power

from 0.1 to 3 W.

BASIC FLYBACK CONFIGURATION

handbook, full pagewidth

on/off

Vin

Vout

np

ns

load

Vzener

(1)

RSrc

Src

OOD

Bt

Ref

TEA1501

Drn

n.c.

Gnd

Vaux

CBt RRef

na

MGM823

(1) The secondary earthing point is isolated from the primary earthing points.

Fig.1 Basic flyback configuration.

1998 Aug 19

2

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