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TPS40200_081 Fiches technique(PDF) 1 Page - Texas Instruments |
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TPS40200_081 Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 43 page 1 FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION 50 60 70 80 90 100 0 0.5 1 1.5 2 2.5 3 LoadCurrent- A V =8V V =12V V =16V IN IN IN V =5V OUT 1 2 3 4 8 7 6 5 VDD ISNS GDRV GND RC SS COMP FB TPS40200 R SENSE V IN V OUT R1 R2 L1 C2 D1 C1 C3 C4 C5 C6 R4 R3 R5 Q1 TPS40200 www.ti.com ........................................................................................................................................ SLUS659D – FEBRUARY 2006 – REVISED NOVEMBER 2008 WIDE INPUT RANGE NON-SYNCHRONOUS VOLTAGE MODE CONTROLLER • Input Voltage Range 4.5 to 52 V • Output Voltage (700 mV to 90% V IN) The TPS40200 is a flexible non-synchronous controller with a built in 200-mA driver for P-channel • 200 mA Internal P-Channel FET Driver FETs. The circuit operates with inputs up to 52 V with • Voltage Feed-Forward Compensation a power-saving feature that turns off driver current • Undervoltage Lockout once the external FET has been fully turned on. This feature extends the flexibility of the device, allowing it • Programmable Fixed Frequency (35–500 kHz) to operate with an input voltage up to 52 V without Operation dissipating excessive power. The circuit operates with • Programmable Short Circuit Protection voltage-mode feedback and has feed-forward • Hiccup Overcurrent Fault Recovery input-voltage compensation that responds instantly to input voltage change. The integral 700-mV reference • Programmable Closed Loop Soft Start is trimmed to 2%, providing the means to accurately • 700 mV 1% Reference Voltage control low voltages. The TPS40200 is available in • External Synchronization and 8-pin SOIC and an 8-pin QFN package and supports many of the features of more complex • Small 8-Pin SOIC (D) and QFN (DRB) Packages controllers. Clock frequency, soft-start, and overcurrent limit are each easily programmed by a single, external component. The part has • Industrial Control undervoltage lockout, and can be easily synchronized • Distributed Power Systems to other controllers or a system clock to satisfy • DSL/Cable Modems sequencing and/or noise-reduction requirements. • Scanners Major sections in this data sheet include: • Telecom • Specifications • General Information • Example Applications • Design References Figure 1. 12 V to 5 V Buck Converter with 94% Efficiency Figure 2. Typical Efficiency of Application Circuit 1 (described in Application 1) 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 © 2006–2008, 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. |
Numéro de pièce similaire - TPS40200_081 |
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Description similaire - TPS40200_081 |
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