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What is causing the oscillation in the feedback loop of an SMPS?
I am trying to make a switching constant current regulator for a Ni-MH charger. It accepts a current set input from the microcontroller using a PWM DAC. I basically want to source 2000mA and 200mA for...
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Is a Type 2a PID(ish) controller just an example of an augmenting integrator?
In a previous question I finally cracked the code on deriving for myself the transfer function for a Type 2(a) compensator like this one, built around an op amp. As it turns out, for AC analysis...
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What is this RC local feedback configuration?
I'm studying power converter control loops using Christophe Basso's book Designing Control Loops for Linear and Switching Power Supplies. A very common pattern in the compensator circuits is a...
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Switch-mode power supply output voltage manipulation via feedback node
I'm trying to design a cheap way to pull current from the feedback node of a SMPS in order to dynamically control the output voltage, as explained in this application...
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Buck/boost output voltage manipulation via feedback node
I'm designing an emitter follower circuit attached to the feedback node of a Buck/Boost SMPS in order to pull current out of the node and subsequently increase the output voltage by varying a DAC...
View ArticleTL431 vs. SMPS transient response
I am currently working with few 150 W SMPS designs for industial applications with heavy transient load condition. Current design works well by mean of line/load regulation and device reliability but...
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SMPS Control - Comparator in Sinking or Sourcing Configuration
Tried something for fun: I modified a constant-current-output SMPS' feedback-control block which is in sinking configuration to sourcing configuration.Here are the simplified schematics of the...
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Why does input DC supply gets short circuited when operational amplifier is...
Following is the block diagram of LLC resonant converter, more clear circuit can be found here.This is an LLC resonant converter which produces 250V across RL with 50V at input without any issue. But...
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