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TEA1755T

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TEA1755T 数据手册

TEA1755T

HV start-up DCM/QR flyback controller with integrated

DCM/QR PFC controller

Rev. 1.1 — 13 March 2015

Product data sheet

1. General description

The GreenChip is the latest generation of green Switched Mode Power Supply (SMPS)

controller ICs. The TEA1755T combines a controller for Power Factor Correction (PFC)

and a flyback controller. Its high level of integration enables cost-effective power supply

design using a very low number of external components.

The PFC operates in Quasi-Resonant (QR) or Discontinuous Conduction Mode (DCM),

with valley switching.

The specially built-in green functions provide high efficiency at all power levels. At high

power levels the flyback operates in QR mode or DCM with valley detection. At medium

power levels, the flyback controller switches to Frequency Reduction (FR) mode and limits

the peak current to an adjustable minimum value. In low power mode, the PFC switches

off to maintain high efficiency. At very low power levels, when the flyback switching

frequency drops below 25 kHz, the flyback converter switches to burst mode. During the

non-switching phase of burst mode, the internal IC supply current is minimized to further

optimize efficiency. Valley switching is used in all operating modes.

The advanced burst mode ensures high-efficiency at low power and good standby power

performance while minimizing audible transformer noise.

The TEA1755T is a Multi-Chip Module, (MCM), containing two chips. The proprietary

high-voltage BCD800 process makes direct start-up possible from the rectified universal

mains voltage in an effective and green way. The second low voltage Silicon-On-Insulator

(SOI) is used for accurate, high-speed protection functions and control.

The TEA1755T enables easy design of highly efficient and reliable supplies up to 250 W.

These power supply designs are cost-effective, requiring the minimum number of external

components.

Remark: All values in this document are typical values unless otherwise stated.

12 3 4 5 6 7...35

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型号	品牌	获取价格	描述	数据表
TEA1755T/1	NXP	获取价格	POWER FACTOR CONTROLLER WITH POST REGULATOR
TEA1761T	NXP	获取价格	GreenChip synchronous rectifier controller
TEA1761T/N2	NXP	获取价格	GreenChip synchronous rectifier controller
TEA1761T/N2,118	NXP	获取价格	Synchronous rectification controller with integrated feedback and protection SOIC 8-Pin
TEA1761T/N2/DG,118	NXP	获取价格	Synchronous rectification controller with integrated feedback and protection SOIC 8-Pin
TEA1762T	NXP	获取价格	GreenChip synchronous rectifier controller
TEA1762T/N1,118	NXP	获取价格	Synchronous rectification controller with integrated feedback and protection SOIC 14-Pin
TEA1762T/N2,118	NXP	获取价格	Synchronous rectification controller with integrated feedback and protection SOIC 14-Pin
TEA1762T/N2/DG/S1	NXP	获取价格	SWITCHING CONTROLLER, PDSO14, 3.90 MM, PLASTIC, MS-012, SOT-108-1, SOP-14
TEA1762T/N2/DG/S2	NXP	获取价格	SWITCHING CONTROLLER, PDSO14, 3.90 MM, PLASTIC, MS-012, SOT-108-1, SOP-14