UBA2071ATS datasheet(1/35 Pages) NXP

Part #	UBA2071ATS

Description	Half bridge control IC for CCFL backlighting

PDF	35 Pages

Scroll/Zoom	100%

Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

Logo

1 / 35 page

1.

General description

The UBA2071 and UBA2071A are high voltage ICs intended to drive Cold Cathode

Fluorescent Lamps (CCFLs) or External Electrode Fluorescent Lamps (EEFLs) for

backlighting applications. They can drive a half bridge circuit made up of two NMOSFETs

with a supply voltage of up to 550 V, so the inverter can be supplied directly from a 400 V

PFC bus.

The UBA2071 and UBA2071A contain a controller, a level shifter, a bootstrap diode and

drivers for the external half bridge power switches. It also contains a low frequency PWM

generator, which can be used to control the brightness level of the lamps, using an analog

brightness/dimming control voltage. PWM dimming can also be realized, using a digital

PWM input signal. PWM dimming can be synchronized with other ICs. The lamp current is

controlled by means of a true zero voltage switching resonant control principle, ensuring

lowest possible switch losses in the half bridge power structure.

The UBA2071 is designed to be supplied by a

∆V/∆t supply from the half bridge circuit that

it drives. The IC itself needs little current and if the IC is off, a clamp protects the supply

voltage from getting too high.

The UBA2071A is designed to be supplied by a ﬁxed 12 V supply. It has a lower supply

start voltage and no supply clamp.

2.

Features

I Suitable for operating in a very wide inverter supply voltage range (up to 550 V DC).

I Integrated level shifter.

I Integrated bootstrap diode.

I Lamp current control by means of a true zero voltage switching resonant control

principle.

I Sample & Hold circuit, maintaining current control value during PWM lamp-off

situation.

I Separately deﬁnable time constants for current control loop and PWM dimming

attack/decay setting.

I Overvoltage control.

I Overcurrent protection.

I Ignition failure detection.

I Hard switching control.

I Arcing detection.

I Open/short pin protections on feedback pins.

I Integrated, programmable fault timer.

UBA2071; UBA2071A

Half bridge control IC for CCFL backlighting

Rev. 01 — 23 June 2008

Product data sheet

Similar Part No. - UBA2071ATS

Manufacturer	Part #	Datasheet	Description
NXP Semiconductors	UBA2070	110Kb / 20P	600 V CCFL ballast driver IC 2002 Oct 24
	UBA2070P	110Kb / 20P	600 V CCFL ballast driver IC 2002 Oct 24
	UBA2070T	110Kb / 20P	600 V CCFL ballast driver IC 2002 Oct 24
	UBA2072	1Mb / 28P	Low Voltage Full-bridge control IC for CCFL backlighting Rev. 08.0-February 2007
	UBA2072T	1Mb / 28P	Low Voltage Full-bridge control IC for CCFL backlighting Rev. 08.0-February 2007

More results

Similar Description - UBA2071ATS

Manufacturer	Part #	Datasheet	Description
Maxim Integrated Produc...	MAX8729	395Kb / 26P	Constant-Frequency, Half-Bridge CCFL Inverter Controller Rev 0; 8/05
International Rectifier	IRS2158D	773Kb / 30P	Ballast control and half-bridge driver in one IC
NXP Semiconductors	UBA2080	587Kb / 15P	Half-bridge driver IC Rev. 1.1-6 December 2011
International Rectifier	IRS2548D	325Kb / 22P	SMPS/LED DRIVER PFC HALF-BRIDGE CONTROL IC
Fairchild Semiconductor	FLS1600XS	562Kb / 13P	FLS-XS Series ??Half-Bridge LLC Resonant Control IC for Lighting
NXP Semiconductors	UBA2072	1Mb / 28P	Low Voltage Full-bridge control IC for CCFL backlighting Rev. 08.0-February 2007
International Rectifier	IRS27951S	550Kb / 28P	RESONANT HALF-BRIDGE CONVERTER CONTROL IC
NXP Semiconductors	NWP2081T	105Kb / 12P	Half-bridge driver IC Rev. 1-3 September 2013
ON Semiconductor	FLS2100XS	565Kb / 15P	Half-Bridge LLC Resonant Control IC for Lighting December 2010 Rev.1.0.0
NXP Semiconductors	UBA2074	1Mb / 33P	High Voltage Full-bridge control IC for CCFL backlighting Rev. 02.0-February 2007

More results

UBA2071ATS Datasheet(PDF) 1 Page - NXP Semiconductors

UBA2071ATS Datasheet(HTML) 1 Page - NXP Semiconductors

Similar Part No. - UBA2071ATS

Similar Description - UBA2071ATS

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

Datasheet Download

Link URL