Texas Instruments 10A, 12V Input, 1.8V Output Synchronous Buck Converter using the TPS40192 and NexFET MOSFETs TPS40192E TPS40192EVM-525 Datenbogen
Produktcode
TPS40192EVM-525
Introduction
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1
Introduction
The TPS40192EVM-525 evaluation module (EVM) is a synchronous buck converter providing a fixed
1.8-V output at up to 10 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 TPS40192 reduced pin count,
mid-voltage, synchronous buck controller and TI's NexFET high performance MOSFETs.
1.8-V output at up to 10 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 TPS40192 reduced pin count,
mid-voltage, synchronous buck controller and TI's NexFET high performance MOSFETs.
1.1
Description
TPS40192EVM-525 is designed to use a regulated 12-V (8-V to 14-V) bus to produce a regulated 1.8-V
output at up to 10 A of load current. TPS40192EVM-525 is designed to demonstrate the TPS40192 in a
typical 12-V bus to low-voltage applications while providing a number of test points to evaluate the
performance of the TPS40192 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 set resistor.
output at up to 10 A of load current. TPS40192EVM-525 is designed to demonstrate the TPS40192 in a
typical 12-V bus to low-voltage applications while providing a number of test points to evaluate the
performance of the TPS40192 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 set resistor.
1.2
Applications
•
Non-isolated, medium-current point of load and low-voltage bus converters
•
Networking equipment
•
Telecommunications equipment
•
Computer peripherals
•
Digital set-top box
1.3
Features
•
8-V to 14-V input range
•
1.8-V fixed output, adjustable with single resistor
•
10-Adc steady-state output current
•
600-kHz switching frequency (fixed by TPS40192)
•
Single 5mm × 6mm TI NexFET for both main switch and synchronous rectifier
•
Four-layer board with all components on the top side
•
Convenient test points for probing switching waveforms and noninvasive loop-response testing
2
Using the TPS40192EVM-525, A 12-V Input, 1.8-V Output, 10-A Synchronous
SLUU395 – December 2009
Buck Converter
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