TEA1541 데이터 시트보기 (PDF) - Philips Electronics

부품명

상세내역

제조사

TEA1541

SMPS control IC with synchronization function

Philips Electronics 

Philips Semiconductors

SMPS control IC with

synchronization function

Product specification

TEA1541

1 FEATURES

1.1 Distinctive features

• Universal mains supply operation (70 to 276 V AC)

• High-level of integration requiring few external

components

• Synchronization with internal frequency divider

• Frequency independent over-power protection.

1.2 Green features

• Frequency reduction at low power standby for improved

system efficiency (<3 W)

• Burst mode operation for very low power standby

levels (<1 W)

• On-chip start-up current source.

1.3 Protection features

• Safe restart mode for system fault conditions

• Continuous mode protection using demagnetization

detection (zero switch-on current)

• Accurate and adjustable overvoltage protection

• Winding short-circuit protection

• Undervoltage protection (foldback during overload)

• Overtemperature protection

• Adjustable low overcurrent protection (OCP) trip level

• Soft (re)start

• Mains voltage-dependent operation-enabling level.

2 GENERAL DESCRIPTION

The TEA1541 is a second generation GreenChipTM(1)

Switched Mode Power Supply (SMPS) controller IC that

operates directly from the rectified universal mains.

A high-level of integration provides a cost-effective power

supply requiring only a few external components.

The TEA1541 controller enables easy design of highly

efficient, reliable switched mode power supplies.

Its internal oscillator can be synchronized to pulses from

an external signal source. External synchronizing pulses

whose frequency is above the SMPS switching frequency

range are divided by an internal divider.

Special built-in green functions ensure optimum efficiency

at all power levels. At low power (standby) levels, the

SMPS supply operates at a lower frequency. In burst

standby mode, power consumption can be reduced to less

than 1 W.

The proprietary EZ-HV SOI process allows start-up

directly from the rectified mains voltage, avoiding the need

for bleeder circuits, and also saves energy.

A low voltage BICMOS implements accurate control and

high speed protection functions.

(1) GreenChip is a trademark of Koninklijke Philips

Electronics N.V.

3 ORDERING INFORMATION

TYPE

NUMBER

TEA1541P

NAME

DIP8

PACKAGE

DESCRIPTION

plastic dual-in-line package; 8 leads (300 mil)

VERSION

SOT97-1

2003 Aug 11

3

Share Link: