SC2449 datasheet(1/20 Pages) SEMTECH

No de pièce	SC2449

Description	BI PHASE DUAL CONTROLLER

PDF	20 Pages

Scroll/Zoom	100%

Fabricant	SEMTECH [Semtech Corporation]

Site Internet	http://www.semtech.com

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1 / 20 page

POWER MANAGEMENT

1

www.semtech.com

SC2449

BI-Phase/Dual Controller

.eatures

Applications

Revision 4, May 2002

Typical Application Circuit

Description

K Selectable dual output or bi-phase operation

K Direct drive for N-channel MOS.ETs

K Undervoltage lockout

K Synchronization to external clock

K Multi-converter synchronization

K Soft start

K .ast transient response

K Max duty cycle 45%

K Output over voltage protection

K Thermal shutdown

K Power supplies for advanced telecoms/datacoms

K SO IP, Ethernet and PABX power supplies

The SC2449 can be configured as a dual converter or a

bi-phase converter for high current applications. The part

is designed for point of use power supplies with 8.5-28V

nominal backplane power sources. Multiple supplies can

be synchronized together to prevent low frequency har-

monics on the backplane. The power dissipation is con-

trolled using a novel low voltage supply technique, allow-

ing high speed and integration, with the high drive cur-

rents to ensure low MOS.ET switching loss.

The use of high speed switching circuits allows very nar-

row PWM outputs down to 15:1 voltage ratios. Single

pin compensation for each channel simplifies develop-

ment as well as reducing external pin count.

Capable of driving MOS.ETs via external driver transis-

tors for phase currents beyond 20A.

Numéro de pièce similaire - SC2449

Fabricant	No de pièce	Fiches technique	Description
Semtech Corporation	SC2449EVB	1Mb / 21P	BI-Phase/Dual Controller
	SC2449ISWTR	1Mb / 21P	BI-Phase/Dual Controller
	SC2449ISWTRT	1Mb / 21P	BI-Phase/Dual Controller
	SC2449	1Mb / 21P	BI-Phase/Dual Controller

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Description similaire - SC2449

Fabricant	No de pièce	Fiches technique	Description
Semtech Corporation	SC2450	1Mb / 20P	BI-Phase/Dual Controller
	SC2450	1Mb / 21P	BI-Phase/Dual Controller
	SC2449	1Mb / 21P	BI-Phase/Dual Controller
International Rectifier	IR3536	354Kb / 3P	Digital Multi-Phase Buck Controller 6-phase 8-phase dual output PWM Controller
International Rectifier	IR3565A	355Kb / 4P	Dual Output Digital Multi-Phase Controller
ON Semiconductor	NCP6121	315Kb / 28P	Dual Output 3 Phase 1/0 Phase Controller January, 2013 ??Rev. 2
	NCP6151A	576Kb / 34P	Dual Output 4 Phase 1/0 Phase Controller Rev1, 032012
	NCP81232	261Kb / 24P	Dual-Channel/Multi-Phase Controller September, 2016 ??Rev. 1
Richtek Technology Corp...	RT8167A	659Kb / 41P	Dual Single-Phase PWM Controller
Richtek Technology Corp...	RT8172A	494Kb / 40P	Dual Single-Phase PWM Controller

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SC2449 Fiches technique(PDF) 1 Page - Semtech Corporation

SC2449 Fiches technique(HTML) 1 Page - Semtech Corporation

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