Power Supply Current Limiting
Objective The purpose of this application note is to introduce the concepts of current limiting and basic current limiting circuits.
Simple Current Limit Circuit using Transistors:
Always adjust the current limit on the bench power supply to only provide slightly more current than you think you need. This should keep you from destroying IC's & transistors when wired
Simple Current Limiter Circuit using Transistors
Learn how to build a simple current limiter circuit using transistors which can be used to control the load current to a specific limit.
How does current limiting work in a PSU?
Current limiting is done by monitoring the output current and adjusting the duty cycle of the PWM to keep it within the desired limit.
Limiting current WITHOUT dropping voltage
See if you can get lucky and find a LDO regulator with adjustable voltage AND current limit. If you can relax the input constraints - say, starting with 9V in - that'll greatly widen your options.
Current Limiter circuit for Power Supply using
Current Limiter circuit for a Power Supply using a transistor and a resistor. If the load current exceeds its maximum, an over current protection is needed
Current-Limiting Circuit
A current-monitoring circuit protects a 28-Vdc power supply against an overload. The current-limiting element in this circuit consists of a pair of power metal oxide/semiconductor field-effect
Power Supply Current Limiter Circuits
Current limiter techniques and circuits using diodes and transistors to provide a current limiter function for power supplies and other circuits. Current limiter circuits are key to power
Limiting current WITHOUT dropping voltage
See if you can get lucky and find a LDO regulator with adjustable voltage AND current limit. If you can relax the input constraints - say, starting with 9V in - that'll greatly
Current Limiter circuit for Power Supply using transistor & resistor
Current Limiter circuit for a Power Supply using a transistor and a resistor. If the load current exceeds its maximum, an over current protection is needed
Current-Limiting Circuit
A current-monitoring circuit protects a 28-Vdc power supply against an overload. The current-limiting element in this circuit consists of a pair of power metal oxide/semiconductor field-effect
Improve Power Converter Reliability Using Hiccup-Mode
Cycle-by-cycle current limiting can be implemented by using peak, valley, or average inductor current information to detect the overload condition and limit the duty cycle.
An Add-On Current Limiter For Your PSU
This circuit allows you to set a limit on the maximum output current available from your PSU. It's very useful when you power-up a project for the first time - or carry out a soak-test.
Power Supply Current Limiter Circuits
Current limiter techniques and circuits using diodes and transistors to provide a current limiter function for power supplies and other circuits. Current limiter circuits are key to power
An Add-On Current Limiter For Your PSU
This circuit allows you to set a limit on the maximum output current available from your PSU. It's very useful when you power-up a project for the first time - or carry out a soak-test.