TIDA-01447
3.3-V, 1-A, Cost-Effective, Single-Layer TO-247 LDO Replacement Reference Design With 91% Efficiency
TIDA-01447
Overview
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)
| Output voltage options | TIDA-01447.1 |
|---|---|
| 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-Isolated | Non-Isolated |
| Input Type | DC |
| Topology | Buck- Synchronous |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDUD89.PDF (2564 K)
Reference design overview and verified performance test data
TIDRSA8.PDF (153 K)
Detailed schematic diagram for design layout and components
TIDRSA9.PDF (194 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRSB0.PDF (57 K)
Detailed overview of design layout for component placement
TIDRSB2.ZIP (462 K)
Files used for 3D models or 2D drawings of IC components
TIDCDQ8.ZIP (38 K)
Design file that contains information on physical board layer of design PCB
TIDRSB1.PDF (202 K)
PCB layer plot file used for generating PCB design layout
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Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | 3.3V 1A, Cost-Effective, Single-Layer TO-247 LDO Replacement Ref Design, 91% Eff | Aug. 17, 2017 |
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