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TPS65261-1 Fiches technique(PDF) 1 Page - Texas Instruments |
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TPS65261-1 Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 36 page Output Load (A) 0 0.5 1 1.5 2 2.5 3 0 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% D001 VOUT = 1.5 V VOUT = 2.5 V LX1 FB1 LX2 FB2 LX3 FB3 VINx ENx PGOOD SSx ROSC VINQ PGND AGND Vin Vout1 Vout3 TPS65266-1 Vout2 Copyright © 2016, Texas Instruments Incorporated Product Folder Sample & Buy Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. TPS65266-1 SLVSDA6 – OCTOBER 2016 TPS65266-1 2.7 to 6-V Input Voltage, 3-A/2-A/2-A Output Current Triple Synchronous Step-Down Converter 1 1 Features 1 • Operating Input Voltage Range 2.7 to 6 V • Feedback Reference Voltage 0.6 V ±1% • Maximum Continuous Output Current 3 A/2 A/2 A • Dedicated Enable and Soft Start • Accurate Start-Up Timing Control With Enable Pins Discharge • Pulse Skipping Mode (PSM) at Light Load • Cycle-by-Cycle Current Limiting With Hiccup Mode Overcurrent Protection • Adjustable Clock Frequency 250 kHz to 2.4 MHz • External Clock Synchronization • Power-Good Indicator • Overtemperature Protection 2 Applications • Printer and Scanner • Digital TV • Set Top Box • Home Gateway and Access Point Networks • Surveillance 3 Description The TPS65266-1 incorporates 3 channels of high- efficiency synchronous buck converter for applications operating off the adaptor or battery with input voltage lower than 6 V. The buck DC/DC converter integrates power MOSFETs for optimized power efficiency and reduces external component counts. The peak current mode control simplifies the compensation and fast transient response. High clock frequency allows smaller and low-value inductors and capacitors. External compensation supports optimized loop compensation and fast transient response. In light load condition, the buck converter operates in PSM mode for a reduction on the input power supplied to the system. Cycle-by-cycle overcurrent limiting with hiccup mode limits MOSFET power dissipation in short circuit or overloading fault conditions. The TPS65266-1 features a power-good supervisor circuit that monitors all converter outputs. The PGOOD pin is asserted after the output voltages in each channel are in regulation and sequencing is done. When continuous heavy overload or short circuit increases power dissipation in the buck converter, internal thermal protection circuit shuts off the device to prevent damage. Recovery from a thermal shutdown is automatic after the device has cooled sufficiently. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) TPS65266-1 VQFN (32) 5.00 mm × 5.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. SPACE Simplified Application Schematic Efficiency vs Output Load |
Numéro de pièce similaire - TPS65261-1 |
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Description similaire - TPS65261-1 |
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