TEA1751T datasheet(6/29 Pages) NXP

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TEA1751T Datasheet(PDF) 6 Page - NXP Semiconductors

No. de pieza	TEA1751T

Descripción Electrónicos	GreenChip III SMPS control IC

Download	29 Pages

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Fabricante Electrónico	NXP [NXP Semiconductors]

Página de inicio	http://www.nxp.com

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6 / 29 page

TEA1751T_LT_2

Product data sheet

Rev. 02 — 23 December 2009

6 of 29

NXP Semiconductors

TEA1751T; TEA1751LT

GreenChip III SMPS control IC

As soon as the flyback converter is started, the voltage on the FBCTRL pin is monitored. If

the output voltage of the flyback converter does not reach its intended regulation level in a

predefined time, the voltage on the FBCTRL pin reaches the Vto(FBCTRL) level and an error

is assumed. The TEA1751 then initiates a safe restart, while in the TEA1751L the

protection is latched.

When one of the protection functions is activated, both converters stop switching and the

VCC voltage drops to Vth(UVLO). A latched protection recharges the capacitor CVCC via the

HV pin, but does not restart the converters. For a safe restart protection, the capacitor is

recharged via the HV pin and the device restarts (see block diagram, Figure 1).

In the event of an overvoltage protection of the PFC circuit, VVOSENSE > Vovp(VOSENSE),

only the PFC controller stops switching until the VOSENSE pin voltage drops below

VOVP(VOSENSE) again. Also, if a mains undervoltage is detected

VVINSENSE < Vstop(VINSENSE), only the PFC controller stops switching until

VVINSENSE > Vstart(VINSENSE) again.

When the voltage on pin VCC drops below the undervoltage lockout level, both controllers

stop switching and reenter the safe restart mode. In the safe restart mode the driver

outputs are disabled and the VCC pin voltage is recharged via the HV pin.

Fabricante Electrónico	No. de pieza	Datasheet	Descripción Electrónicos
NXP Semiconductors	TEA1751T	273Kb / 31P	HV start-up DCM/QR flyback controller with integrated DCM/QR PFC controller Rev. 3-10 January 2013
NXP Semiconductors	TEA1751T	273Kb / 31P	HV start-up DCM/QR flyback controller with integrated DCM/QR PFC controller Rev. 3-10 January 2013

Fabricante Electrónico	No. de pieza	Datasheet	Descripción Electrónicos
NXP Semiconductors	TEA1750	163Kb / 29P	GreenChip III SMPS control IC Rev. 02-15 December 2008
	TEA1752T	818Kb / 34P	GreenChip III SMPS control IC Rev. 02-24 June 2010
	TEA1733T	185Kb / 20P	GreenChip III SMPS control IC Rev. 02-26 March 2010
	TEA1506	122Kb / 22P	GreenChip SMPS control IC 2003 Sep 09
	TEA1731TS	245Kb / 19P	GreenChip SMPS control IC Rev. 2.1-16 August 2012
	TEA1733CP	372Kb / 20P	GreenChip SMPS control IC Rev. 2-15 July 2013
	TEA1733CT	374Kb / 20P	GreenChip SMPS control IC Rev. 2-16 July 2013
	TEA1732TS	215Kb / 20P	GreenChip SMPS control IC Rev. 1-18 March 2014
	TEA1833TS	258Kb / 25P	GreenChip SMPS control IC Rev. 1-31 August 2015
	TEA1733LT	149Kb / 21P	GreenChip SMPS control IC Rev. 8 ??16 July 2013

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