TPS40055EVM-002: 5V @ 2A, 10 ~ 40V in (3A @ 10Vin)

Summary

The TPS40055EVM−002 wide range input dc-to-dc converter uses the TPS40055 synchronous rectifier controller to step down a 10-V to 40-V input to 5 V. The output current is 3 A with an input of 10 V and should be linearly derated to 2 A at VIN = 40 V.

The TPS40055 is used because it offers a variety of user programmable functions such as operating frequency, soft start, voltage feed-forward, high-side current limit, and external loop compensation. This controller provides a regulated 10-V gate drive supply which feeds the bootstrap charging circuit for the high-side N-channel MOSFET along with a driver for the low-side synchronous rectifier MOSFET.

Specifications

Manufacturer	Texas Instruments
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	296-18954-ND
Eval Board Supplier	Texas Instruments
Eval Board	Normally In Stock
Topology	Step Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	5 V
Current Out	2 A 3 A
Voltage In	10 ~ 40 V
Efficiency @ Conditions	>92%, 10V in, 5V @ 0.5 ~ 3 A >86%, 24V in, 5V @ 1 ~ 2 A
Voltage Out Range	- Fixed
Features	Current Limit (Adj. or Fixed) Short Circuit Protection Soft Start Synchronizable Thermal Protection Under Voltage Protection, Brown-Out
Switching Frequency	300 kHz
Standby Current [Typical]
Quiescent Current [Typical]	1.5 mA
Component Count + Extras	34 + 12
Internal Switch	No
Design Author	Texas Instruments
Application / Target Market	Point of Load (PoL) Servers Telecom
Standby Current [Maximum]	- Not Given
Quiescent Current [Maximum]	3 mA
Main I.C. Base Part	TPS40055
Date Created By Author	2004-04
Date Added To Library	2012-03