TPS54227EVM-686: 1.05V @ 2A, 4.5 ~ 18V in


The TPS54227 is a single, adaptive on-time, D-CAP2™-mode, synchronous buck converter requiring a low external component count. The D-CAP2™ control circuit is optimized for low-ESR output capacitors such as POSCAP, SP-CAP, or ceramic types and features fast transient response with no external compensation. The switching frequency is internally set at a nominal 700 kHz. The high-side and low-side switching MOSFETs are incorporated inside the TPS54227 package along with the gate drive circuitry. The low drain-to-source on resistance of the MOSFETs allows the TPS54227 to achieve high efficiencies and helps keep the junction temperature low at high-output currents. The TPS54227 dc/dc synchronous converter is designed to provide up to a 2-A output from an input voltage source of 4.5 V to 18 V. The output voltage range is from 0.76 V to 7 V.

The TPS54227EVM-686 evaluation module is a single, synchronous buck converter providing 1.05 V at 2 A from 5-V to 18-V input. This user’s guide describes the TPS54227EVM-686 performance.


Manufacturer Texas Instruments
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number 296-29084-ND
Eval Board Supplier Texas Instruments
Eval Board Normally In Stock
Topology Step Down
Outputs and Type 1 Non-Isolated
Output Voltage: Factory Set 1.05 V
Current Out 2 A
Voltage In 4.5 ~ 18 V
Efficiency @ Conditions >87%, 5V in, 1.05V @ 0.5 ~ 1 A
>83%, 12V in, 1.05V @ 0.5 ~ 1 A
Voltage Out Range 0.76 ~ 7 V
Features Over Current Protection
Shutdown, Enable, Standby
Soft Start
Thermal Protection
Under Voltage Protection, Brown-Out
Switching Frequency 700 kHz
Standby Current [Typical] 5 µA
Quiescent Current [Typical] 800 µA
Component Count + Extras 15 + 10
Internal Switch Yes
Design Author Texas Instruments
Application / Target Market Set-Top Boxes
Standby Current [Maximum] 10 µA
Quiescent Current [Maximum] 1.2 mA
Main I.C. Base Part TPS54227

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