TPS40322

ACTIVE

Dual Output or Two-phase Synchronous Buck Controller

Top

Product details

Parameters

Vin (Min) (V) 3 Vin (Max) (V) 20 Vout (Min) (V) 0.6 Vout (Max) (V) 5.6 Iout (Max) (A) 60 Iq (Typ) (uA) 6000 Switching frequency (Min) (kHz) 100 Switching frequency (Max) (kHz) 1000 Features Enable, Frequency Synchronization, Multiple Outputs, Phase Interleaving, Power Good, Remote Sense Operating temperature range (C) -40 to 125 Regulated outputs (#) 2 Number of Phases 2 Rating Catalog open-in-new Find other Buck controllers (external switch)

Package | Pins | Size

VQFN (RHB) 32 25 mm² 5 x 5 open-in-new Find other Buck controllers (external switch)

Features

  • Dual-Output or Two-Phase Synchronous Buck
    Controller
  • 180° Out-of-Phase Reduces Input Ripple
  • Input Voltage Range: 3 V to 20 V
  • Output Voltage Range: 0.6 V to 5.6 V
  • Adjustable Frequency: 100 kHz to 1 MHz
  • Bidirectional SYNC Pin With 0°/180° or 90°/270°
    Phase Shift
  • Voltage Mode Control With Input Feedforward
  • Accurate Current Sharing for Two-Phase
    Operation
  • Individual Power Good Outputs
  • Individual Enable and Programmable Soft Start,
    With Pre-Bias Start-Up
  • ±0.5%, 600-mV Reference
  • Output UV/OV Protection and Input Undervoltage
    Lockout
  • Individual Overcurrent Limit Setting
  • Hiccup Overcurrent Protection
  • Accurate Inductor DCR or Resistive Current
    Sensing
  • Remote Sense for Two-Phase Applications
  • Internal N-Channel FET Drivers
  • Integrated Bootstrap Switches
  • Available in 5-mm × 5-mm 32-Pin VQFN Package
open-in-new Find other Buck controllers (external switch)

Description

The TPS40322 device is a dual-output, synchronous buck controller. It can also be configured as a single-output, two-phase controller. The 180° out-of-phase operation reduces the input current ripple and extends the input capacitor lifetime. Bidirectional master and slave synchronization function provides evenly distributed phase shift for a four-output system that reduces input ripple further and attenuates the system noise.

The wide input range can support 3.3-V, 5-V, and 12-V buses. The accurate reference voltage satisfies the precision voltage needed by ASICs and potentially reduces the output capacitance requirement. Separate PGOOD signals provide flexibility for system monitoring and sequencing. The two channels are independently controlled and each soft-start time is programmable. Voltage mode control is implemented to reduce noise sensitivity and also ensures low duty ratio conversion.

open-in-new Find other Buck controllers (external switch)
Download

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet TPS40322 Dual Output or Two-Phase Synchronous Buck Controller datasheet (Rev. E) Jan. 07, 2016
Application note Multiphase Buck Design from Start to Finish, Part 1 (Rev. A) May 24, 2019
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application note SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC Feb. 22, 2016
User guide Using the TPS40322EVM-074 Apr. 05, 2012
User guide Using the TPS40322EVM-679 May 04, 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
49
Description
The Texas Instruments TPS40322EVM-074 evaluation module (EVM) helps designers evaluate the performance of the TPS40322 Dual Output or Two-phase Synchronous Buck Controller. The EVM is designed to use a regulated 4.5Vdc to 15.0Vdc bus to produce a single dual phase 1.2Vdc regulated output at 30A of (...)
Features
  • 4.5V to 15V input range
  • 1.2V fixed output
  • 30A DC steady state current
  • 500 kHz switching frequency
  • Inductor DCR current sensing
  • Voltage Mode Feedback Control with Input Feed forward
EVALUATION BOARD Download
49
Description
The TPS40322EVM-679 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS40322 Dual Output or Two-phase Synchronous Buck Controller. The EVM is designed to use a regulated 8.0Vdc to 15.0Vdc bus to produce two high current, regulated outputs, one at 1.2Vdc and the (...)
Features
  • 8V to 15V input range
  • 1.2V and 1.8V fixed outputs
  • 10A DC steady state current per output
  • 500kHz switching frequency
  • Output sequence capability
  • Inductor DCR current sensing
  • Voltage Mode Feedback Control with Input Feedforward

Design tools & simulation

SIMULATION MODEL Download
SLUM168.ZIP (161 KB) - PSpice Model
SIMULATION MODEL Download
SLUM325.TSC (756 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SLUM326.ZIP (118 KB) - TINA-TI Spice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
CALCULATION TOOL Download
SLUC263D.ZIP (131 KB)
CALCULATION TOOL Download
SLURAZ4.ZIP (37 KB)

Reference designs

REFERENCE DESIGNS Download
5V 45A Dual Phase Synchronous Buck Reference Design
PMP20516 — This is a synchronous buck reference design that uses TPS40322 in a dual phase topology. It is meant for 12V nominal input voltage and outputs 5V and is capable of providing up to 45A combined on both phases with excellent current sharing. The full load efficiency is 96.7% which provides great (...)
document-generic Schematic
REFERENCE DESIGNS Download
Dual Phase Synchronous Buck Converter for 40 A Vcore Rail Reference Design
PMP20054 — The PMP20054 converts a 5 V input to a 0.85 V output @ 40 A (2 Phase) using the TPS40322. The output capacitors are all ceramic for a cost effective and small solution.
document-generic Schematic
REFERENCE DESIGNS Download
Dual Buck with 5V @ 7A and 3.3V @ 4A Reference Design
PMP8703 This design is a dual buck for 12V input voltage which provides 5.0V @ 7.0A and 3.3V @ 4.0A. TIs CSD86330Q3D Power Blocks enable a high efficiency even at high switching frequencies.
Design files
REFERENCE DESIGNS Download
12V input, Compact Dual 5V/5.5A Point-of-Load using NexFET Power Block II Reference Design
PMP8962 PMP8962 is a compact dual 5.5A POL solution in 0.63" by 0.74" size. It showcases CSD87381P power block II with high efficiency and excellent thermal performnce. It has programmable frequency, soft-start, external compensation, adjustable current limit and OCP/OVP/OTP features. It is suitable for (...)
document-generic Schematic
REFERENCE DESIGNS Download
Two Phase 50W Synchronous Buck
PMP6685 — The PMP6685 is 50W (1V at 50A) DC/DC reference design built to supply a digital analyzer chips utilizing TPS40322 two-phase Synchronous Buck converter. Very small design for cost optimized solutions.
Design files
REFERENCE DESIGNS Download
9 - 15V Input, 3.3V@25A and 5V@25A using the TPS40322
PMP6857 — The PMP6857 reference design uses the TPS40322 to generate 5V and 3.3V outputs. The supplies are capable of 25A output each. The design also takes advantage of high performance compact MOSFETs (CSD87353) to achieve efficiency over 95% for most of the load range.

CAD/CAE symbols

Package Pins Download
VQFN (RHB) 32 View options

Ordering & quality

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos

Related videos