1 Introduction
The TPS40075EVM-001 evaluation module (EVM) is a synchronous buck converter providing a fixed 1.5-V
output at up to 15 A from a 12-V input bus. The EVM is designed to start up from a single supply, so no
additional bias voltage is required for start-up. The module uses the TPS40075 high-frequency controller with
remote sense. The module uses the TPS40075 high-frequency synchronous buck controller with remote sense
and enable.
1.1 Description
The TPS40075EVM-001 is designed to use a regulated 12-V bus (between 10 V and 14 V) to produce a high
current, regulated 1.5-V output at up to 15 A of load current. The TPS40075EVM-001 is design to demonstrate
the TPS40075 in a typical regulated bus to low-voltage application while providing a number of test points to
evaluate the performance of the TPS40075 in a given application. The EVM can be modified to support output
voltages from 0.9 V to 3.3 V by changing a single resistor. The TPS40075EVM-001 has been built to the sample
application used in the
TPS40075 Midrange Input Synchronous Buck Controller with Voltage Feedforward Data
except the switching frequency has been lowered to 400 kHz to reduce switching losses in the Power
FETs, and the R
KFF
resistor (R10) increased to maintain the UVLO level.
1.2 Applications
• Non-isolated medium current point of load and low voltage bus converters
• Merchant power modules
• Networking equipment
• Telecommunications equipment
• DC power distributed systems
1.3 Features
• 10-V to 14-V input range
• 1.5-V fixed output, adjustable with single resistor
• 15-A
DC
steady state output current
• 400-kHz switching frequency
• Single main switch MOSFET and single synchronous rectifier MOSFET single
• Component side, surface mount design on a 3-inch × 3-inch evaluation board
• Four-layer PCB with all components on top side
• Convenient test points for probing critical waveforms and non-invasive loop response testing
Introduction
2
TPS40075 Buck Controller Evaluation Module User's Guide
SLUU254A – DECEMBER 2006 – REVISED JANUARY 2022
Copyright © 2022 Texas Instruments Incorporated
