Datasheet
Table Of Contents
- 1 Introduction
- 2 TPS54386EVM Electrical Performance Specifications
- 3 Schematic
- 3.1 Sequencing Jump (JP3)
- 3.2 Enable Jumpers (JP1 and JP2)
- 3.3 Test Point Descriptions
- 3.3.1 Input Voltage Monitoring (TP1 and TP2)
- 3.3.2 Channel 1 Output Voltage Monitoring (TP3 and TP4)
- 3.3.3 Channel 1 Loop Analysis (TP5, TP6, TP7 and TP8)
- 3.3.4 Channel 1 Switching Waveforms (TP9 and TP10)
- 3.3.5 TPS54386 Device Ground (TP11)
- 3.3.6 Channel 2 Switching Waveforms (TP12 and TP13)
- 3.3.7 Channel 2 Loop Analysis (TP14, TP15, TP16 and TP17)
- 3.3.8 Output Voltage Monitoring (TP18 and TP19)
- 4 4 Test Set Up
- 5 TPS54386EVM Typical Performance Data and Characteristic Curves
- 6 EVM Assembly Drawings and Layout
- 7 List of Materials
1 Introduction
1.1 Description
1.2 Applications
1.3 Features
User's Guide
SLUU286 – March 2008
A 12-V Input, 5.0-V and 3.3-V Output, 2-A
Non-Synchronous Buck Converter
The TPS54386EVM evaluation module (EVM) is a dual non-synchronous buck converter providing fixed
5.0-V and 3.3-V output at up to 2 A each 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 TPS54386 Dual
Non-Synchronous Buck Converter with Integral High-Side FET.
TPS54386EVM is designed to use a regulated 12-V (+10% / -20%) bus to produce two regulated power
rails, 5.0 V and 3.3 V at up to 2 A of load current each. TPS54386EVM is designed to demonstrate the
TPS54386 in a typical 12-V bus system while providing a number of test points to evaluate the
performance of the TPS54386 in a given application. The EVM can be modified to other input or output
voltages by changing some of the components.
• Non-Isolated Low Current Point of Load and Voltage Bus Converters
• Consumer Electronics
• LCD TV
• Computer Peripherals
• Digital Set Top Box
• 12-V (+10% / -20%) Input Range
• 5.0-V and 3.3-V Fixed Output Voltage, Adjustable with Resistor Change
• 2-A
DC
Steady State Output Current (3 A Peak)
• 600-kHz Switching Frequency (fixed by TPS54386)
• Internal Switching MOSFET and External Rectifier Diode
• Double Sided 2 Active Layer PCB (all components on top side, test point signals routed on internal
layers)
• Active Converter Area Less than 1.8 Square Inches (0.89” x 1.97”)
• Convenient Test Points (used for probing switching waveforms and non-invasive loop response testing)
SLUU286 – March 2008 A 12-V Input, 5.0-V and 3.3-V Output, 2-A Non-Synchronous Buck Converter 3
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