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TPS54320 Fiches technique(PDF) 1 Page - Texas Instruments |
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TPS54320 Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 42 page PH PVIN GND BOOT VSENSE COMP TPS54320 EN RT/CLK SS/TR Exposed Thermal Pad Css Rrt R3 C1 Cboot Co Lo R1 R2 Cin C2 VIN VIN VOUT PWRGD 50 55 60 65 70 75 80 85 90 95 100 0 0.5 1 1.5 2 2.5 3 Load Current - A VOUT = 5 V VOUT = 3.3 V VOUT = 1.8 V VIN = 12 V, Fsw = 500 kHz Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS54320 SLVS982B – AUGUST 2010 – REVISED NOVEMBER 2014 TPS54320 4.5- to 17-V Input, 3-A Synchronous Step Down SWIFT™ Converter 1 Features 3 Description The TPS54320 is a full featured 17-V, 3-A 1 • Integrated 57-m Ω / 50-mΩ MOSFETs synchronous step-down converter which is optimized • Split Power Rail: 1.6 to 17 V on PVIN for small designs through high efficiency and • 200-kHz to 1.2-MHz Switching Frequency integrated high-side and low-side MOSFETs. Further space savings are achieved through current mode • Synchronizes to External Clock control, which reduces component count, and by • 0.8-V Voltage Reference With ±1% Accuracy selecting a high switching frequency, reducing the • Low 2-µA Shutdown Quiescent Current inductor's footprint. • Hiccup Overcurrent Protection The output voltage startup ramp is controlled by the • Monotonic Start-Up into Prebiased Outputs SS/TR pin which allows operation as either a stand alone power supply or in tracking situations. Power • –40°C to 150°C Operating Junction Temperature sequencing is also possible by correctly configuring Range the enable and the open drain power good pins. • Pin-to-Pin Compatible With the TPS54620 Cycle by cycle current limiting on the high-side FET • Adjustable Slow Start/Power Sequencing protects the device in overload situations and is • Power Good Output for Undervoltage and enhanced by a low-side sourcing current limit which Overvoltage Monitoring prevents current runaway. Hiccup protection will be • Adjustable Input Undervoltage Lockout (UVLO) triggered if the overcurrent condition has persisted for longer than the preset time. Thermal shutdown • Supported by SwitcherPro™ Software Tool disables the part when die temperature exceeds • For SWIFT™ Documentation and SwitcherPro, thermal shutdown temperature. The TPS54320 is Visit www.ti.com/swift available in a 14-pin, 3.5-mm × 3.5-mm VQFN, thermally-enhanced package. 2 Applications Device Information(1) • Broadband, Networking, and Communication PART NUMBER PACKAGE BODY SIZE (NOM) Infrastructure TPS54320 VQFN (14) 3.50 mm × 3.50 mm • Automated Test and Medical Equipment (1) For all available packages, see the orderable addendum at • DSP and FPGA Point-of-Load Applications from the end of the data sheet. 12-V Bus Simplified Schematic Efficiency vs Load Current 1 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. |
Numéro de pièce similaire - TPS54320_15 |
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Description similaire - TPS54320_15 |
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