Dual Output or Two-phase Synchronous Buck Controller
Product details
Parameters
Package | Pins | Size
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
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.
Technical documentation
= Top documentation for this product selected by TI
| 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
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
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
SLUM168.ZIP (161 KB) - PSpice Model
SLUM325.TSC (756 KB) - TINA-TI Reference Design
SLUM326.ZIP (118 KB) - TINA-TI Spice Model
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
- (...)
SLUC263D.ZIP (131 KB)
SLURAZ4.ZIP (37 KB)
Reference designs
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 (...)
Design files
-
download PMP20516 BOM.pdf (65KB) -
download PMP20516 Assembly Drawing.pdf (48KB) -
download PMP20516 PCB.pdf (48KB) -
download PMP20516 CAD Files.zip (222KB) -
download PMP20516 Gerber.zip (508KB)
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.
Design files
-
download PMP20054 BOM.pdf (63KB) -
download PMP20054 PCB (from PMP6552).pdf (1148KB) -
download PMP20054 Design Files.zip (628KB) -
download PMP20054 Gerber (from PMP6552).zip (265KB)
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
-
download PMP8703 BOM.pdf (20KB)
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 (...)
Design files
-
download PMP8962 BOM.pdf (109KB) -
download PMP8962 PCB.pdf (259KB) -
download PMP8962 Gerber.zip (145KB)
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
-
download PMP6685 BOM.pdf (28KB)
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.
Design files
-
download PMP6857 BOM.pdf (28KB) -
download PMP6857 Gerber.zip (501KB) -
download PMP6857 PCB.pdf (65KB)
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.