3-V to 18-V input, 6-A synchronous step-down regulator with forced continuous conduction mode
Product details
Parameters
Package | Pins | Size
Features
- Configured for rugged applications
- Input voltage range: 3 V to 18 V
- Output voltage range: 0.6 V to 7 V
- 6-A continuous output current
- 0.6-V ±1% reference voltage (25°C)
- 98% maximum duty cycle
- 600-kHz switching frequency
- Non-latched for OC, OV, UV, and OT protections
- Built-in output discharge function
- Numerous pin-compatible options
- TPS566231 and TPS566238 with SS pin for adjustable soft-start time
- TPS566231P and TPS566238P with PG pin for power good indicator
- TPS566231 and TPS566231P for auto-skip mode
- TPS566238 and TPS566238P for continuous current mode
- Small solution size and ease of use
- Integrated power MOSFET with RDS(on) 20.8 mΩ and 10.6 mΩ
- D-CAP3™ architecture control for fast transient response and internal compensation
- 1.5-mm × 2.0-mm HotRod™ QFN package
- Create a custom design with the WEBENCH® Power Designer
Description
The TPS56623x are simple, easy to use, high-efficiency, 6-A synchronous buck converters in a QFN 9-pin 1.5-mm x 2.0-mm package.
The devices operate with wider supply input voltage ranging from 3 V to 18 V. The D-CAP3™ control mode was adopted to provide a fast transient response, good line and load regulation, no requirement for external compensation, and to support low-ESR output capacitors.
The TPS566231 and TPS566231P operate in Eco-Mode™ for high efficiency during light load operation, and are designed with ULQ™ (Ultra Low Quiescent) feature, achieving 50-uA quiescent current to enable long battery life in low-power applications. The TPS566238 and TPS566238P operate in continuous current mode, which maintains lower output ripple during all load conditions.
The TPS566231 and TPS566238 soft-start time can be adjusted through the SS pin. The TPS566231P and TPS566238P indicate power good through the PG pin.
The TPS56623x can support up to 98% duty cycle operation, and integrate complete protection through OVP, OCP, UVLO, OTP, and UVP with hiccup. They are each available in a 9-pin 1.5-mm x 2.0-mm HotRod™ package and the junction temperature is specified from -40°C to 125°C.
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | TPS56623x 3-V to 18-V Input, 6-A Synchronous Step-Down Voltage Regulator datasheet (Rev. A) | Jan. 27, 2021 |
| Application note | Stability Design for D-CAP2/D-CAP3 Converter | Aug. 02, 2021 | |
| Technical article | Which pinout is best? How individual, multifunctional and trimmed pinouts help address design challenges | Jun. 28, 2021 | |
| User guide | TPS566238 Buck Converter Evaluation Module User's Guide (Rev. B) | Jun. 25, 2021 | |
| Application note | Stability Analysis and Design of D-CAP2 and D-CAP3 Converter | Jun. 09, 2021 | |
| User guide | TPS566231P and TPS566238P Step-Down Converter Evaluation Module User's Guide (Rev. A) | Apr. 28, 2021 | |
| Certificate | TPS566238EVM EU Declaration of Conformity (DoC) | May 29, 2020 | |
| Technical article | Minimize the impact of the MLCC shortage on your power application | Mar. 29, 2019 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- 3-V to 18-V input voltage range
- 0.6-V to 7-V output voltage range
- Up to 6-A output current
- Large duty operation
- Fast transient response
- 2-mm x 1.5-mm RQF package
Description
Features
- 3-V to 18-V input voltage range
- 0.6-V to 7-V output voltage range
- Up to 6-A output current
- FCCM for smaller ripple under all loading range
- PGOOD indicator
- 2-mm × 1.5-mm RQF package
Design tools & simulation
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
- (...)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| VQFN-HR (RQF) | 9 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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