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TPS40050-Q1 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS40050-Q1 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 32 page TPS40050Q1 TPS40051Q1 TPS40053Q1 SGLS219 − NOVEMBER 2003 WIDEINPUT SYNCHRONOUS BUCK CONTROLLER 8 FEATURES D Qualification in Accordance With AEC-Q100(1) D Qualified for Automotive Applications D Customer-Specific Configuration Control Can Be Supported Along With Major-Change Approval D Operating Input Voltage 8 V to 40 V D Input Voltage Feed-Forward Compensation D < 1 % Internal 0.7-V Reference D Programmable Fixed-Frequency Up to 1 MHz Voltage Mode Controller D Internal Gate Drive Outputs for High-Side and Synchronous N-Channel MOSFETs D 16-Pin PowerPADt Package (θJC = 2°C/W) D Thermal Shutdown D Externally Synchronizable D Programmable High-Side Current Limit D Programmable Closed-Loop Soft-Start D TPS40050 Source Only D TPS40051 Source/Sink D TPS40053 Source/Sink With VOUT Prebias (1) Contact factory for details. Q100 qualification data available on request. APPLICATIONS D Power Modules D Networking/Telecom D Industrial D Servers DESCRIPTION The TPS4005x is a family of high-voltage, wide input (8 V to 40 V), synchronous, step-down converters. The TPS4005x family offers design flexibility with a variety of user programmable functions, including soft-start, UVLO, operating frequency, voltage feed- forward, high-side current limit, and loop compensation. The TPS4005x are also synchronizable to an external supply. They incorporate MOSFET gate drivers for external N-channel high-side and synchronous rectifier (SR) MOSFETs. Gate drive logic incorporates anti-cross conduction circuitry to prevent simultaneous high-side and synchronous rectifier conduction. The TPS4005x uses voltage feed-forward control techniques to provide good line regulation over the wide (4:1) input voltage range, and fast response to input line transients with near constant gain with input variation which eases loop compensation. The externally programmable current limit provides pulse-by-pulse current limit, as well as hiccup mode operation utilizing an internal fault counter for longer duration overloads. ORDERING INFORMATION TA APPLICATION PACKAGE PART NUMBER SOURCE(2) Plastic HTSSOP (PWP)(1) TPS40050QPWPRQ1 −40 °C to 125°C SOURCE/SINK(2) Plastic HTSSOP (PWP)(1) TPS40051QPWPRQ1 −40 C to 125 C SOURCE/SINK(2) with prebias Plastic HTSSOP (PWP)(1) TPS40053QPWPRQ1 (1) This PWP package is taped and reeled as indicated by the R suffix on the device type (i.e., TPS40050QPWPRQ1). See the application section of the data sheet for PowerPAD drawing and layout information. (2) See Application Information section, pg. 8 PowerPAD t is trademark of Texas Instruments. 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 2002, 2003, Texas Instruments Incorporated 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. |
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