Design Specifications
| Inputs |
Outputs #1 |
| VinMin=2.95V |
Vout1=2.5V |
| VinMax=5.5V |
Iout1=5A |
Design Description
The LM20145 demonstration board has been designed to
balance overall solution size with the efficiency of the regulator.
The demonstration board measures just 1.0" x 1.0" on a
two layer PCB, with all components placed on the top layer.
The power stage and compensation components of the
LM20145 demonstration board have been optimized for an
input voltage of 5V, but for testing purposes, the input can be
varied across the entire operating range. The output voltage
of the evaluation board is nominally 2.5V. The control loop
compensation of the LM20145 demonstration board has been
designed to provide a stable solution over the entire input and
output voltage range with a reasonable transient response.
The EN pin is connected to VIN through a 100kOhm resistor
which will enable the device when power is applied. |
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Design Resources
Additional Resources
Board Photo
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Features
- Optimized for 5V to 2.5V conversion
- 5A output current, 89% efficiency
- 1.5%output voltage accuracy
- 500 kHz switching frequency
- Peak current mode control
- Starts up into pre-biased loads
- Soft-Start set by external capacitor
- Precision enable pin with hysteresis
- Integrated OVP, UVLO, power good and thermal
shutdown
- Accurate current limit with frequency foldback
- Input voltage range 2.95V to 5.5V
Applications
- Simple to design, high efficiency point of load regulation from a 5V or 3.3V bus
- High Performance DSPs, FPGAs, ASICs and microprocessors
- Broadband, Networking and Optical Communications Infrastructure
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Design Files (Schematic, Board Layout, Gerber, and BOM)