3.3-V, 1-A, Cost-Effective, Single-Layer TO-247 LDO Replacement Reference Design With 91% Efficiency

(ACTIVE) TIDA-01447

Description & Features

Technical Documents

Support & Training

Order Now


View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

Key Document

Description

This reference design demonstrates a small solution size, high-efficiency, and low-EMI DC/DC module for LDO replacement in major home appliances. Replacing LDOs with DC/DC modules drastically improves system efficiency, saving on solution size and BOM cost while also eliminating the need for heat sinks. The module takes up the same amount of space as a TO-247 package and is pin-to-pin compatible with the TO-220 LDO, such as UA7805, enabling quick evaluation and reduced time to market. The TPS561201 power converter enables a higher output current and lower power consumption at full-load, low-load, and standby operation. This module is the same size with a TO-247 package and is pin compatible with the TO-220 LDO, enabling a quick evaluation and time to market.

Features
  • 1.1-μA standby current and 423-μA no load current
  • Small form factor: pin-compatible with TO-220 and size-compatible with TO-247
  • Less than 35°C increase at full load which eliminates the need of heat sink
  • Reduces onboard DC/DC design complexity, saves R&D time and efforts for switching power supply EMC design (quicker to market)

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




Parametrics
 TIDA-01447.1
(Output Voltage 1)
Vin (Min) (V)6.5
Vin (Max) (V)17
Vout (Nom) (V)3.3
Iout (Max) (A)1
Output Power (W)3.3
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBuck- Synchronous

TI Devices (1)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS561201  4.5V to 17V Input, 1A Synchronous Step-Down Converter  Step-Down (Buck)  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 2564 17 Aug 2017 456
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 38 17 Aug 2017 44
ZIP 462 17 Aug 2017 52
PDF 202 17 Aug 2017 53
PDF 57 17 Aug 2017 41
PDF 194 17 Aug 2017 62
PDF 153 17 Aug 2017 195
Related Tools & Software

Reference Designs (3)



Support & Training

TI E2E Community

As a member of  myTI you can join the TI E2E™ Community  where you can ask questions, share ideas and collaborate with fellow engineers and TI experts

Content is provided "AS IS" by the respective TI and Community contributors and does not constitute TI specifications. See  Terms of use.

Engage in the Community

Blogs

Wikis

Visit the TI Wiki