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TPS40422 Dataheets PDF



Part Number TPS40422
Manufacturers Texas Instruments
Logo Texas Instruments
Description Dual-Output or Two-Phase Synchronous Buck Controller
Datasheet TPS40422 DatasheetTPS40422 Datasheet (PDF)

Product Folder Order Now Technical Documents Tools & Software Support & Community TPS40422 SLUSAQ4F – OCTOBER 2011 – REVISED JANUARY 2017 TPS40422 Dual-Output or Two-Phase Synchronous Buck Controller with PMBus™ Interface 1 Features •1 Single Supply Operation: 4.5 V to 20 V • Output Voltage from 0.6 V to 5.6 V • Dual-output or Two-Phase Synchronous Buck Controller • PMBus™ Interface Capability – Margining Up or Down with 2-mV Step – Programmable Fault Limit and Response – Output Voltage, O.

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Product Folder Order Now Technical Documents Tools & Software Support & Community TPS40422 SLUSAQ4F – OCTOBER 2011 – REVISED JANUARY 2017 TPS40422 Dual-Output or Two-Phase Synchronous Buck Controller with PMBus™ Interface 1 Features •1 Single Supply Operation: 4.5 V to 20 V • Output Voltage from 0.6 V to 5.6 V • Dual-output or Two-Phase Synchronous Buck Controller • PMBus™ Interface Capability – Margining Up or Down with 2-mV Step – Programmable Fault Limit and Response – Output Voltage, Output Current Monitoring – External Temperature Monitoring with 2N3904 Transistor – Programmable UVLO ON and OFF Thresholds – Programmable Soft-start Time and Turn-On and Turn-Off Delay • On-Chip Non-volatile Memory (NVM) to Store Custom Configurations • 180° Out-of-Phase to Reduce Input Ripple • 600-mV Reference Voltage with ±0.5% Accuracy from 0°C to 85°C • Inductor DCR Current Sensing • Programmable Switching Frequency: 200 kHz to 1 MHz • Voltage Mode Control with Input Feed Forward • Current Sharing for Multiphase Operation • Supports Pre-biased Output • Differential Remote Sensing • External SYNC • BPEXT Pin Boosts Efficiency by Supporting External Bias Power Switch Over • OC, OV, UV, and OT Fault Protection • 40-Pin, 6 mm × 6 mm VQFN Package with 0.5- mm Pitch • 40-Pin, 5 mm × 5 mm WQFN Package with 0.4- mm Pitch 2 Applications • Multiple Rail Systems • Telecom Base Station • Switcher/Router Networking • Server and Storage System 3 Description The TPS40422 is a dual-output PMBus protocol, synchronous buck controller. It can be configured also for a single, two-phase output. The wide input range supports 5-V and 12-V intermediate buses. The accurate reference voltage satisfies the need of precision voltage to the modern ASICs and potentially reduces the output capacitance. Voltage mode control reduces noise sensitivity and also ensures low duty ratio conversion. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) TPS40422 VQFN (40) WQFN (40) 6.00 mm × 6.00 mm 5.00 mm × 5.00 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. Simplified Application VOUT1 CLK DATA SMBALRT SYNC 12 CLK 31 VDD BP3 32 11 DATA ADDR1 9 13 SMBALRT ADDR0 10 40 SYNC RT 1 PG1 33 PG1 CNTL1 4 CNTL1 PG2 19 CNTL2 5 TPS40422 29 HDRV1 HDRV2 21 30 BOOT1 BOOT2 20 28 SW1 SW2 22 PG2 CNTL2 VIN VOUT2 27 LDRV1 26 PGND 34 CS1P 35 CS1N 37 VSNS1 39 DIFFO1 LDRV2 23 CS2P 18 CS2N 17 VSNS2 15 2 FB1 FB2 8 3 COMP1 38 GSNS1 COMP2 7 GSNS2 14 TSNS1 AGND BPEXT BP6 TSNS2 36 6 24 25 16 UDG-11278 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. TPS40422 SLUSAQ4F – OCTOBER 2011 – REVISED JANUARY 2017 www.ti.com Table of Contents 1 Features .................................................................. 1 2 Applications ........................................................... 1 3 Description ............................................................. 1 4 Revision History..................................................... 2 5 Description (continued)......................................... 3 6 Pin Configuration and Functions ......................... 4 7 Specifications......................................................... 6 7.1 Absolute Maximum Ratings ...................................... 6 7.2 ESD Ratings.............................................................. 6 7.3 Recommended Operating Conditions....................... 6 7.4 Electrical Characteristics........................................... 7 7.5 Typical Characteristics ............................................ 11 8 Detailed Description ............................................ 12 8.1 Overview ................................................................. 12 8.2 Functional Block Diagram ....................................... 13 8.3 Feature Description................................................. 14 8.4 Device Functional Modes........................................ 23 8.5 Programming .......................................................... 26 8.6 Register Maps ........................................................ 27 9 Applications and Implementation ...................... 51 9.1 Application Information............................................ 51 9.2 Typical Application ................................................. 51 10 Power Supply Recommendations ..................... 60 11 Layout................................................................... 61 11.1 Layout Guidelines ................................................. 61 11.2 Layout Example .................................................... 62 12 Device and Documentation Support ................. 63 12.1 Device Support...................................................... 63 12.2 Community.


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