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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 |
Picotest LM20143B VRM Demo Board V1.0
Frequently Asked Questions
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