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TPS61170DRVRG4 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS61170DRVRG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 27 page 1 FEATURES DESCRIPTION APPLICATIONS VIN5V L1 10 H m D1 VIN SW FB GND CTRL COMP C2 4.7 F m C3 680 pF TPS 61170 R1 87.6kW VOUT 12V/300mA R2 10kW R3 10kW C1 4.7 F m L1: TOKO#A915_Y-100M C1:MurataGRM188R61A475K C2:MurataGRM21BR61E475K D1: ONsemiMBR0540T1 *R3,C3:CompensationRCnetwork TPS61170 SLVS789A – NOVEMBER 2007 – REVISED FEBRUARY 2008 www.ti.com 1.2A High Voltage Boost Converter in 2x2mm2 QFN Package • 3-V to 18-V Input Voltage Range • High Output Voltage: Up to 38 V The TPS61170 is a monolithic high voltage switching regulator with integrated 1.2-A, 40-V power MOSFET. • 1.2-A integrated Switch It can be configured in several standard • 1.2-MHz Fixed Switching Frequency switching-regulator topologies, including boost and • 12 V at 300 mA and 24 V at 150 mA from 5-V SEPIC. The device has a wide input-voltage range to Input (Typical) support applications with input voltage from multi-cell batteries or regulated 5-V, 12-V power rails. • Up to 93% Efficiency The TPS61170 uses a 1.2-MHz switching frequency, • On-The-Fly Output Voltage Reprogramming allowing the use low-profile inductors and low-value • Skip-Switching Cycle for Output Regulation at ceramic input and output capacitors. The external Light Load loop compensation gives the user flexibility to • Built-in Soft Start optimize loop compensation and transient response. The device has built-in protection features, such as • 6-Pin, 2 mm × 2 mm QFN Package pulse-by-pulse overcurrent limit, soft start and thermal shutdown. • 5-V to 12-V and 24-V, 12-V to 24-V Boost The feedback reference voltage of the FB pin is Converter 1.229V. It can be lowered using a 1-wire digital interface (Easyscale™ protocol) through the CTRL • Buck Boost Regulation Using SEPIC Topology pin. Alternatively, a pulse width-modulation (PWM) • ADSL Modems signal can be applied to the CTRL pin. The duty cycle of the signal reduces the feedback reference voltage proportionally. The TPS61170 is available in a 6-pin 2 mm × 2 mm QFN package, allowing a compact power-supply solution. Figure 1. Typical Application 1 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. PRODUCTION DATA information is current as of publication date. Copyright © 2007–2008, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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