Picotest
LM20143 Point of Load Regulator Demo Board
LM20143 Point of Load Regulator Demo Board
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Key Features
- Integrated point of load synchronous buck regulator
- 5V input, 1.2V/2.5A output configuration
- Emulated current mode control for flat impedance output
- Easily accessible 0805 chip size components for customisation
- USB-powered with on-board resistive load
- Bode plot measurement capability with injection resistor and test points
- SMA output connectors for versatile measurement options
Overview
The Picotest LM20143 Point of Load Regulator Board is a cutting-edge demonstration platform for integrated synchronous buck regulation. This compact, self-contained unit showcases a 5V input and 1.2V/2.5A output configuration, leveraging emulated current mode control for straightforward flat impedance output creation.
Designed with accessibility in mind, the board features easily customisable 0805 chip size components, enabling engineers to experiment with various values. Powered via USB and equipped with an on-board resistive load, this demo board offers a complete testing environment for power regulation scenarios.
The LM20143 board is engineered for comprehensive analysis, incorporating provisions for Bode plot measurements. It includes a pre-installed injection resistor (R5) and dedicated test points (TP3 and TP4) for injection signal and measurement. SMA output connectors further enhance its versatility, facilitating connections for a wide range of measurements, including 2-port output impedance and step load tests.
The circuit is an integrated point of load synchronous buck regulator with a 5V input and a 1.2V/2.5A output. The device uses emulated current mode control, making it simple to create a flat impedance output. Easily accessible 0805 chip size components make it easy to customize or experiment with different component values. This is a fully self-contained demo board using USB input power and an on-board resistive load.
Supported Measurements
|
TEST |
SIGNAL INJECTORS NEEDED |
| 2-port output impedance | J2102A two SMA cables (optional two P2130A or J2130A) |
| Load Step | J2111A or J2150A and J2130A or P2130A SMA cable |
| Ripple and Noise | J2130A or P2130A SMA cable |
| Turn on overshoot | Scope with probe or SMA cable |
| PSRR | J2120A or J2111A and two voltage probes |
| Input Impedance | J2120A voltage and current probe |
| Bode Plot | J2100A or J2101A two voltage probes |
Frequently Asked Questions
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