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TPS54357 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS54357 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 28 page TPS54352,TPS54353 TPS54354,TPS54355 TPS54356,TPS54357 SLVS519 − MAY 2004 4.5V TO 20V INPUT, 3A OUTPUT SYNCHRONOUS PWM SWITCHER WITH INTEGRATED FET (SWIFT) 6,4 mm y 5,0 mm FEATURES D 100 mΩ, 4.5-A Peak MOSFET Switch for High Efficiency at 3-A Continuous Output Current D Uses External Lowside MOSFET or Diode D Fixed Output Versions − 1.2V/1.5V/1.8V/2.5V/3.3V/5.0V D Internally Compensated for Low Parts Count D Synchronizes to External Clock D 1805 Out of Phase Synchronization D Wide PWM Frequency − Fixed 250 kHz, 500 kHz or Adjustable 250 kHz to 700 kHz D Internal Slow Start D Load Protected by Peak Current Limit and Thermal Shutdown D Adjustable Undervoltage Lockout D 16-Pin TSSOP PowerPADE Package APPLICATIONS D Industrial & Commercial Low Power Systems D LCD Monitors and TVs D Computer Peripherals D Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors PH VIN PGND BOOT VSENSE PWRPAD BIAS ENA PWRGD Input Voltage Output Voltage LSG TPS54356 SYNC SIMPLIFIED SCHEMATIC DESCRIPTION The TPS5435x is a medium output current synchronous buck PWM converter with an integrated high side MOSFET and a gate driver for an optional low side external MOSFET. Features include a high performance voltage error amplifier that enables maximum performance under transient conditions. The TPS5435x has an under-voltage-lockout circuit to prevent start-up until the input voltage reaches a preset value; an internal slow-start circuit to limit in-rush currents; and a power good output to indicate valid output conditions. The synchronization feature is configurable as either an input or an output for easy 180 ° out of phase synchronization. The TPS5435x devices are available in a thermally enhanced 16-pin TSSOP (PWP) PowerPAD package. TI provides evaluation modules and the SWIFT Designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles. 50 55 60 65 70 75 80 85 90 95 100 01 234 VI= 12 V VO= 3.3 V fs = 500 kHz VI = 12 V VI = 6 V IO − Output Current − A EFFICIENCY vs OUTPUT CURRENT PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. www.ti.com Copyright 2004, Texas Instruments Incorporated PowerPAD and SWIFT are trademarks of Texas Instruments. |
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