TPS53316RGTR

Product Folder Sample & Buy Technical Documents Support & Community Tools & Software TPS53316 SLUSAP5A – DECEMBER 2011 – REVISED NOVEMBER 2016 TPS53316 High-Efficiency, 5-A Step-Down Regulator With Integrated Switcher 1 Features 3 Description • • • • The TPS53316 device provides a fully integrated 3.3V or 5-V input, synchronous buck converter with 16 total components, in 200 mm2 of PCB area. Due to low RDS(on) and TI proprietary SmoothPWM skip mode of operation, it enables 96% peak efficiency, and over 90% efficiency at load as light as 100 mA. It requires only two 22-µF ceramic output capacitors for a power-dense, 5-A solution. 1 • • • • • • • • • • • • • • 96% Maximum Efficiency Continuous 5-A Output Current Capability Support all MLCC Output Capacitor SmoothPWM™ Auto-Skip Eco-Mode™ for LightLoad Efficiency Voltage Mode Control Single Rail Input Selectable Frequency Selectable OCP Threshold Selectable Soft-Start Time 2.9-V to 6-V Input Voltage Range Adjustable Output Voltage Ranging from 0.6 V up to 0.8 × VIN Soft-Stop Output Discharge During Disable Overcurrent, Overvoltage, and Overtemperature Protection Open-Drain Power Good Indication Internal Bootstrap Switch Supports Prebias Start-Up Functionality Small 3 mm × 3 mm, 16-Pin, QFN Package Low RDS(on), 22-mΩ With 3.3-V Input and 18-mΩ With 5-V Input TPS53316 features 750-kHz, 1.1-MHz, and 2-MHz switching frequency selections, prebias start-up, selectable internal softstart, output soft discharge, internal VBST switch, power good, EN/Input UVLO, overcurrent, overvoltage, undervoltage, and overtemperature protections and all ceramic output capacitor support. It supports input voltages from 2.9 V to 6 V, and no extra bias voltage is needed. The output voltage is adjustable from 0.6 V up to 0.8 × VIN. TPS53316 is available in the 3 mm × 3 mm, 16-pin QFN package (Green RoHs compliant and Pb free) and is specified from –40°C to 85°C. Device Information(1) PART NUMBER TPS53316 PACKAGE BODY SIZE (NOM) QFN (16) 3.00 mm × 3.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. 2 Applications • • Low-Voltage Applications for 5-V Step-Down Rails Low-Voltage Applications for 3.3-V Step-Down Rails Typical Application Circuit 2.9 V to 6 V Output All MLCCs VREG3 VIN CBST SW VIN VBST AGND TPS53316 EN EN RF/OC PS PowerPad PGD PGD FB COMP UDG-11233 Copyright © 2016, Texas Instruments Incorporated 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. TPS53316 SLUSAP5A – DECEMBER 2011 – REVISED NOVEMBER 2016 www.ti.com Table of Contents 1 2 3 4 5 6 7 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 2 3 4 6.1 6.2 6.3 6.4 6.5 6.6 4 4 4 5 5 8 Absolute Maximum Ratings ...................................... ESD Ratings.............................................................. Recommended Operating Conditions....................... Thermal Information .................................................. Electrical Characteristics........................................... Typical Characteristics .............................................. Detailed Description ............................................ 14 7.1 Overview ................................................................. 14 7.2 Functional Block Diagram ....................................... 14 7.3 Feature Description................................................. 14 7.4 Device Functional Modes........................................ 16 8 Application and Implementation ........................ 18 8.1 Application Information............................................ 18 8.2 Typical Application .................................................. 18 9 Power Supply Recommendations...................... 25 10 Layout................................................................... 25 10.1 Layout Guidelines ................................................. 25 10.2 Layout Example .................................................... 25 11 Device and Documentation Support ................. 26 11.1 11.2 11.3 11.4 11.5 11.6 Documentation Support ........................................ Receiving Notification of Documentation Updates Community Resources.......................................... Trademarks ........................................................... Electrostatic Discharge Caution ............................ Glossary ................................................................ 26 26 26 26 26 26 12 Mechanical, Packaging, and Orderable Information ........................................................... 26 4 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Original (December 2011) to Revision A Page • Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .................................................................................................. 1 • Deleted Ordering Information table; see POA at the end of the data sheet........................................................................... 1 • Deleted Lead temperature, 1.6 mm (1/16 inch) from case for 10 seconds: 300°C maximum ............................................... 4 • Changed R8 value in the Typical 3.3-V Input Application Circuit Diagram From: 5.76 kΩ To: 57.6 kW ............................. 18 2 Submit Documentation Feedback Copyright © 2011–2016, Texas Instruments Incorporated Product Folder Links: TPS53316 TPS53316 www.ti.com SLUSAP5A – DECEMBER 2011 – REVISED NOVEMBER 2016 5 Pin Configuration and Functions EN 1 RF/OC 2 PGND PGND VIN VIN 16 15 14 13 RGT Package 16-Pin QFN Top View 12 VREG3 11 AGND PowerPad PS SW SW SW FB COMP 8 9 7 10 4 6 3 5 PGD VBST Not to scale Pin Functions PIN NO. 1 NAME EN TYPE (1) DESCRIPTION I Enable pin. Internally pulled-up to the VIN pin through a 2-MΩ resistor. The EN voltage must be less than (VIN + 0.5 V). 2 RF/OC I Switching frequency and OC level configuration pin: Connecting to ground: 1.1 MHz, 6.5-A OCP Pulled high or floating (internal pulled high): 1.1 MHz, 4.5-A OCP Connect with 24.3 kΩ to GND: 750 kHz, 4.5-A OCP Connect with 57.6 kΩ to GND: 750 kHz, 6.5-A OCP Connect with 105 kΩ to GND: 2 MHz, 4.5-A OCP Connect with 174 kΩ to GND: 2 MHz, 6. 5-A OCP 3 PGD O Power good output flag. Open-drain output. Pull up to an external rail through a resistor. 4 VBST P Supply input for high-side MOSFET (bootstrap terminal). Connect capacitor from this pin to SW terminal. 5 SW B Output inductor connection to integrated power devices 6 SW B Output inductor connection to integrated power devices 7 SW B Output inductor connection to integrated power devices 8 PS I Mode configuration pin (with10-µA current): Connecting to ground: Forced CCM with 4x softstart time Pulled high or floating (internal pulled high): Forced CCM master Connect with 24.3 kΩ to GND: HEF mode with 4x softstart time Connect with 57.6 kΩ to GND: HEFF mode Connect with 105 kΩ to GND: DE mode Connect with 174 kΩ to GND: DE mode with 4x softstart time 9 COMP O Error amplifier compensation terminal. Type III compensation method is generally recommended for stability. 10 FB I Voltage feedback pin. Use for OVP, UVP, and PGD determination. 11 AGND G Device analog ground terminal 12 VREG3 O 3.3-V LDO output, serves as supply voltage for internal analog circuitry. The EN pin controls the turnon function of the LDO. 13 VIN P Gate driver supply and power conversion input voltage. The input range is from 2.9 V to 6 V. 14 VIN P Gate driver supply and power conversion input voltage. The input range is from 2.9 V to 6 V. 15 PGND P Device power ground terminal 16 PGND P Device power ground terminal — PowerPad — Thermal pad of the device. Use 4 or 5 vias to connect to GND plane for heat dissipation. (1) B = Bidirectional, G = Ground, I = Input, O = Output, P = Supply Submit Documentation Feedback Copyright © 2011–2016, Texas Instruments Incorporated Product Folder Links: TPS53316 3 TPS53316 SLUSAP5A – DECEMBER 2011 – REVISED NOVEMBER 2016 www.ti.com 6 Specifications 6.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) (1) Input voltage MIN MAX VIN –0.3 7 VBST –0.3 17 VBST (with respect to LL) –0.3 7 EN –0.3 7 –0.3 3.7 FB, PS, RF/OC SW Output voltage UNIT V DC –1 7 Pulse < 20 ns, E = 5 µJ ≥–5