#buckconverter — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #buckconverter, aggregated by home.social.
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2026 Green Powered Challenge: A Portable Solar Panel, Made Better
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2026 Green Powered Challenge: A Portable Solar Panel, Made Better
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Well, this is annoying.
I have some little power #modules (bought on #AliExpress, natch) that were advertised as automatic boost/buck converters. Input from <4V to >30V, output from 1.25V to 35V.
They're based on the XL6009 switching converter, which supports auto-buck-boost as one mode.
But they appear to use it in boost-only mode. The output voltage can not go below the input as far as I can tell. From the datasheet, it looks like that's because the auto-buck-boost config requires a few more components, plus a transformer instead of a simple inductor, which is probably the main reason (BOM).
The listing just seems to be ... wrong.
Annoying.
#seller #SellerDescription #YumCha #Chinesium #BuckConverter #BoostConverter #AutoBuckBoost #BuckBoost #electronics #hobby
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Well, this is annoying.
I have some little power #modules (bought on #AliExpress, natch) that were advertised as automatic boost/buck converters. Input from <4V to >30V, output from 1.25V to 35V.
They're based on the XL6009 switching converter, which supports auto-buck-boost as one mode.
But they appear to use it in boost-only mode. The output voltage can not go below the input as far as I can tell. From the datasheet, it looks like that's because the auto-buck-boost config requires a few more components, plus a transformer instead of a simple inductor, which is probably the main reason (BOM).
The listing just seems to be ... wrong.
Annoying.
#seller #SellerDescription #YumCha #Chinesium #BuckConverter #BoostConverter #AutoBuckBoost #BuckBoost #electronics #hobby
-
Well, this is annoying.
I have some little power #modules (bought on #AliExpress, natch) that were advertised as automatic boost/buck converters. Input from <4V to >30V, output from 1.25V to 35V.
They're based on the XL6009 switching converter, which supports auto-buck-boost as one mode.
But they appear to use it in boost-only mode. The output voltage can not go below the input as far as I can tell. From the datasheet, it looks like that's because the auto-buck-boost config requires a few more components, plus a transformer instead of a simple inductor, which is probably the main reason (BOM).
The listing just seems to be ... wrong.
Annoying.
#seller #SellerDescription #YumCha #Chinesium #BuckConverter #BoostConverter #AutoBuckBoost #BuckBoost #electronics #hobby
-
Well, this is annoying.
I have some little power #modules (bought on #AliExpress, natch) that were advertised as automatic boost/buck converters. Input from <4V to >30V, output from 1.25V to 35V.
They're based on the XL6009 switching converter, which supports auto-buck-boost as one mode.
But they appear to use it in boost-only mode. The output voltage can not go below the input as far as I can tell. From the datasheet, it looks like that's because the auto-buck-boost config requires a few more components, plus a transformer instead of a simple inductor, which is probably the main reason (BOM).
The listing just seems to be ... wrong.
Annoying.
#seller #SellerDescription #YumCha #Chinesium #BuckConverter #BoostConverter #AutoBuckBoost #BuckBoost #electronics #hobby
-
Well, this is annoying.
I have some little power #modules (bought on #AliExpress, natch) that were advertised as automatic boost/buck converters. Input from <4V to >30V, output from 1.25V to 35V.
They're based on the XL6009 switching converter, which supports auto-buck-boost as one mode.
But they appear to use it in boost-only mode. The output voltage can not go below the input as far as I can tell. From the datasheet, it looks like that's because the auto-buck-boost config requires a few more components, plus a transformer instead of a simple inductor, which is probably the main reason (BOM).
The listing just seems to be ... wrong.
Annoying.
#seller #SellerDescription #YumCha #Chinesium #BuckConverter #BoostConverter #AutoBuckBoost #BuckBoost #electronics #hobby
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Coping with Disappearing Capacitance in a Buck Converter https://hackaday.com/2025/08/10/coping-with-disappearing-capacitance-in-a-buck-converter/ #ceramiccapacitor #analogdiscovery #buckconverter #dielectric #capacitor #hardware #ceramic #Parts
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Coping with Disappearing Capacitance in a Buck Converter https://hackaday.com/2025/08/10/coping-with-disappearing-capacitance-in-a-buck-converter/ #ceramiccapacitor #analogdiscovery #buckconverter #dielectric #capacitor #hardware #ceramic #Parts
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Coping with Disappearing Capacitance in a Buck Converter https://hackaday.com/2025/08/10/coping-with-disappearing-capacitance-in-a-buck-converter/ #ceramiccapacitor #analogdiscovery #buckconverter #dielectric #capacitor #hardware #ceramic #Parts
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Coping with Disappearing Capacitance in a Buck Converter https://hackaday.com/2025/08/10/coping-with-disappearing-capacitance-in-a-buck-converter/ #ceramiccapacitor #analogdiscovery #buckconverter #dielectric #capacitor #hardware #ceramic #Parts
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Coping with Disappearing Capacitance in a Buck Converter - Designing a circuit is a lot easier on paper, where components have well-defined ... - https://hackaday.com/2025/08/10/coping-with-disappearing-capacitance-in-a-buck-converter/ #ceramiccapacitor #analogdiscovery #buckconverter #dielectric #capacitor #hardware #ceramic #parts
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Coping with Disappearing Capacitance in a Buck Converter - Designing a circuit is a lot easier on paper, where components have well-defined ... - https://hackaday.com/2025/08/10/coping-with-disappearing-capacitance-in-a-buck-converter/ #ceramiccapacitor #analogdiscovery #buckconverter #dielectric #capacitor #hardware #ceramic #parts
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Coping with Disappearing Capacitance in a Buck Converter - Designing a circuit is a lot easier on paper, where components have well-defined ... - https://hackaday.com/2025/08/10/coping-with-disappearing-capacitance-in-a-buck-converter/ #ceramiccapacitor #analogdiscovery #buckconverter #dielectric #capacitor #hardware #ceramic #parts
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Coping with Disappearing Capacitance in a Buck Converter - Designing a circuit is a lot easier on paper, where components have well-defined ... - https://hackaday.com/2025/08/10/coping-with-disappearing-capacitance-in-a-buck-converter/ #ceramiccapacitor #analogdiscovery #buckconverter #dielectric #capacitor #hardware #ceramic #parts
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Coping with Disappearing Capacitance in a Buck Converter - Designing a circuit is a lot easier on paper, where components have well-defined ... - https://hackaday.com/2025/08/10/coping-with-disappearing-capacitance-in-a-buck-converter/ #ceramiccapacitor #analogdiscovery #buckconverter #dielectric #capacitor #hardware #ceramic #parts
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The BAPPR Keeps Your Addressable LED System Cool https://hackaday.com/2024/07/27/the-bappr-keeps-your-addressable-led-system-cool/ #switchingpowersupply #addressableleds #buckconverter #Neopixels #hardware #LEDHacks #ledstrip #rgb
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The BAPPR Keeps Your Addressable LED System Cool https://hackaday.com/2024/07/27/the-bappr-keeps-your-addressable-led-system-cool/ #switchingpowersupply #addressableleds #buckconverter #Neopixels #hardware #LEDHacks #ledstrip #rgb
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The BAPPR Keeps Your Addressable LED System Cool https://hackaday.com/2024/07/27/the-bappr-keeps-your-addressable-led-system-cool/ #switchingpowersupply #addressableleds #buckconverter #Neopixels #hardware #LEDHacks #ledstrip #rgb
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The BAPPR Keeps Your Addressable LED System Cool https://hackaday.com/2024/07/27/the-bappr-keeps-your-addressable-led-system-cool/ #switchingpowersupply #addressableleds #buckconverter #Neopixels #hardware #LEDHacks #ledstrip #rgb
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The BAPPR Keeps Your Addressable LED System Cool - We all love a nice strip or grid of addressable LEDs. It can add flair or an artis... - https://hackaday.com/2024/07/27/the-bappr-keeps-your-addressable-led-system-cool/ #switchingpowersupply #addressableleds #buckconverter #neopixels #hardware #ledhacks #ledstrip #rgb
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The BAPPR Keeps Your Addressable LED System Cool - We all love a nice strip or grid of addressable LEDs. It can add flair or an artis... - https://hackaday.com/2024/07/27/the-bappr-keeps-your-addressable-led-system-cool/ #switchingpowersupply #addressableleds #buckconverter #neopixels #hardware #ledhacks #ledstrip #rgb
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The BAPPR Keeps Your Addressable LED System Cool - We all love a nice strip or grid of addressable LEDs. It can add flair or an artis... - https://hackaday.com/2024/07/27/the-bappr-keeps-your-addressable-led-system-cool/ #switchingpowersupply #addressableleds #buckconverter #neopixels #hardware #ledhacks #ledstrip #rgb
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The BAPPR Keeps Your Addressable LED System Cool - We all love a nice strip or grid of addressable LEDs. It can add flair or an artis... - https://hackaday.com/2024/07/27/the-bappr-keeps-your-addressable-led-system-cool/ #switchingpowersupply #addressableleds #buckconverter #neopixels #hardware #ledhacks #ledstrip #rgb
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The BAPPR Keeps Your Addressable LED System Cool - We all love a nice strip or grid of addressable LEDs. It can add flair or an artis... - https://hackaday.com/2024/07/27/the-bappr-keeps-your-addressable-led-system-cool/ #switchingpowersupply #addressableleds #buckconverter #neopixels #hardware #ledhacks #ledstrip #rgb
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Anyone out there used a buck converter to power a #pi5 from a power bank?
Getting that ideal 5V 5A combination seems impossible from unmodified power from portable sources. A DC-DC step down should be able to generate that V and A. But the voltage input has to be within a specified range to get the desired A.
Sure, the 5 can run off of lower amperage but not at all well. I'm looking to get the same performance as though I were using the official 27W power supply.
Also, WTH is up with the math? 5.1V and 5A does not equal 27W! I guess that 27W rating is the upper bound as the supply can also take in 9V 3A (27W). The supply must itself be using a buck converter. I just need one a LOT smaller. I'm aware of boards like this that may do the trick. https://a.co/d/dU6wNU3
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Anyone out there used a buck converter to power a #pi5 from a power bank?
Getting that ideal 5V 5A combination seems impossible from unmodified power from portable sources. A DC-DC step down should be able to generate that V and A. But the voltage input has to be within a specified range to get the desired A.
Sure, the 5 can run off of lower amperage but not at all well. I'm looking to get the same performance as though I were using the official 27W power supply.
Also, WTH is up with the math? 5.1V and 5A does not equal 27W! I guess that 27W rating is the upper bound as the supply can also take in 9V 3A (27W). The supply must itself be using a buck converter. I just need one a LOT smaller. I'm aware of boards like this that may do the trick. https://a.co/d/dU6wNU3
-
Anyone out there used a buck converter to power a #pi5 from a power bank?
Getting that ideal 5V 5A combination seems impossible from unmodified power from portable sources. A DC-DC step down should be able to generate that V and A. But the voltage input has to be within a specified range to get the desired A.
Sure, the 5 can run off of lower amperage but not at all well. I'm looking to get the same performance as though I were using the official 27W power supply.
Also, WTH is up with the math? 5.1V and 5A does not equal 27W! I guess that 27W rating is the upper bound as the supply can also take in 9V 3A (27W). The supply must itself be using a buck converter. I just need one a LOT smaller. I'm aware of boards like this that may do the trick. https://a.co/d/dU6wNU3
-
Anyone out there used a buck converter to power a #pi5 from a power bank?
Getting that ideal 5V 5A combination seems impossible from unmodified power from portable sources. A DC-DC step down should be able to generate that V and A. But the voltage input has to be within a specified range to get the desired A.
Sure, the 5 can run off of lower amperage but not at all well. I'm looking to get the same performance as though I were using the official 27W power supply.
Also, WTH is up with the math? 5.1V and 5A does not equal 27W! I guess that 27W rating is the upper bound as the supply can also take in 9V 3A (27W). The supply must itself be using a buck converter. I just need one a LOT smaller. I'm aware of boards like this that may do the trick. https://a.co/d/dU6wNU3
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A new power supply for the Commodore 64
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A new power supply for the Commodore 64
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A new power supply for the Commodore 64
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A new power supply for the Commodore 64
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Cheap Power Supplies with Fake Chips Might Not be That Bad
#parts #buckconverter #counterfeit #dcdc #fake #lm2596 #ripple #hackaday
-- Delivered by RssEverything service
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Cheap Power Supplies with Fake Chips Might Not be That Bad
#parts #buckconverter #counterfeit #dcdc #fake #lm2596 #ripple #hackaday
-- Delivered by RssEverything service
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Cheap Power Supplies with Fake Chips Might Not be That Bad https://hackaday.com/2023/11/10/cheap-power-supplies-with-fake-chips-might-not-be-that-bad/ #buckconverter #counterfeit #lm2596 #ripple #Parts #dc-dc #fake
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Cheap Power Supplies with Fake Chips Might Not be That Bad https://hackaday.com/2023/11/10/cheap-power-supplies-with-fake-chips-might-not-be-that-bad/ #buckconverter #counterfeit #lm2596 #ripple #Parts #dc-dc #fake
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Cheap Power Supplies with Fake Chips Might Not be That Bad - We all know the old maxim: if it’s too good to be true, it’s probably made with fa... - https://hackaday.com/2023/11/10/cheap-power-supplies-with-fake-chips-might-not-be-that-bad/ #buckconverter #counterfeit #lm2596 #ripple #parts #dc-dc #fake
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Cheap Power Supplies with Fake Chips Might Not be That Bad - We all know the old maxim: if it’s too good to be true, it’s probably made with fa... - https://hackaday.com/2023/11/10/cheap-power-supplies-with-fake-chips-might-not-be-that-bad/ #buckconverter #counterfeit #lm2596 #ripple #parts #dc-dc #fake
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Cheap Power Supplies with Fake Chips Might Not be That Bad - We all know the old maxim: if it’s too good to be true, it’s probably made with fa... - https://hackaday.com/2023/11/10/cheap-power-supplies-with-fake-chips-might-not-be-that-bad/ #buckconverter #counterfeit #lm2596 #ripple #parts #dc-dc #fake
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Cheap Power Supplies with Fake Chips Might Not be That Bad - We all know the old maxim: if it’s too good to be true, it’s probably made with fa... - https://hackaday.com/2023/11/10/cheap-power-supplies-with-fake-chips-might-not-be-that-bad/ #buckconverter #counterfeit #lm2596 #ripple #parts #dc-dc #fake
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Cheap Power Supplies with Fake Chips Might Not be That Bad - We all know the old maxim: if it’s too good to be true, it’s probably made with fa... - https://hackaday.com/2023/11/10/cheap-power-supplies-with-fake-chips-might-not-be-that-bad/ #buckconverter #counterfeit #lm2596 #ripple #parts #dc-dc #fake
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I‘m currently trying out buck converters as a drop in replacement for linear voltage regulators. It should be much more efficient if they can handle the load. Let’s see. #synthdiy #synthesizer #psu #eurorack #buckconverter #kicad
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I‘m currently trying out buck converters as a drop in replacement for linear voltage regulators. It should be much more efficient if they can handle the load. Let’s see. #synthdiy #synthesizer #psu #eurorack #buckconverter #kicad
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I‘m currently trying out buck converters as a drop in replacement for linear voltage regulators. It should be much more efficient if they can handle the load. Let’s see. #synthdiy #synthesizer #psu #eurorack #buckconverter #kicad
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I‘m currently trying out buck converters as a drop in replacement for linear voltage regulators. It should be much more efficient if they can handle the load. Let’s see. #synthdiy #synthesizer #psu #eurorack #buckconverter #kicad
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Buck Converter Takes 8V to 100V - For those living before the invention of the transistor, the modern world must app... - https://hackaday.com/2023/09/17/buck-converter-has-tremendous-range/ #buckconverter #powersupply #converter #mp9486 #parts #dc-dc #buck #dc
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Buck Converter Takes 8V to 100V - For those living before the invention of the transistor, the modern world must app... - https://hackaday.com/2023/09/17/buck-converter-has-tremendous-range/ #buckconverter #powersupply #converter #mp9486 #parts #dc-dc #buck #dc
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Buck Converter Takes 8V to 100V - For those living before the invention of the transistor, the modern world must app... - https://hackaday.com/2023/09/17/buck-converter-has-tremendous-range/ #buckconverter #powersupply #converter #mp9486 #parts #dc-dc #buck #dc
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Buck Converter Takes 8V to 100V - For those living before the invention of the transistor, the modern world must app... - https://hackaday.com/2023/09/17/buck-converter-has-tremendous-range/ #buckconverter #powersupply #converter #mp9486 #parts #dc-dc #buck #dc
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Buck Converter Takes 8V to 100V - For those living before the invention of the transistor, the modern world must app... - https://hackaday.com/2023/09/17/buck-converter-has-tremendous-range/ #buckconverter #powersupply #converter #mp9486 #parts #dc-dc #buck #dc
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Minimizing Stress on a Coin Cell Battery - When it comes to powering tiny devices for a long time, coin cell batteries are th... - https://hackaday.com/2023/08/10/minimizing-stress-on-a-coin-cell-battery/ #boostconverter #buckconverter #batteryhacks #switchmode #voltagesag #coincell #battery #dc-dc #life #smps
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Minimizing Stress on a Coin Cell Battery - When it comes to powering tiny devices for a long time, coin cell batteries are th... - https://hackaday.com/2023/08/10/minimizing-stress-on-a-coin-cell-battery/ #boostconverter #buckconverter #batteryhacks #switchmode #voltagesag #coincell #battery #dc-dc #life #smps
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Minimizing Stress on a Coin Cell Battery - When it comes to powering tiny devices for a long time, coin cell batteries are th... - https://hackaday.com/2023/08/10/minimizing-stress-on-a-coin-cell-battery/ #boostconverter #buckconverter #batteryhacks #switchmode #voltagesag #coincell #battery #dc-dc #life #smps
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Minimizing Stress on a Coin Cell Battery - When it comes to powering tiny devices for a long time, coin cell batteries are th... - https://hackaday.com/2023/08/10/minimizing-stress-on-a-coin-cell-battery/ #boostconverter #buckconverter #batteryhacks #switchmode #voltagesag #coincell #battery #dc-dc #life #smps
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Minimizing Stress on a Coin Cell Battery - When it comes to powering tiny devices for a long time, coin cell batteries are th... - https://hackaday.com/2023/08/10/minimizing-stress-on-a-coin-cell-battery/ #boostconverter #buckconverter #batteryhacks #switchmode #voltagesag #coincell #battery #dc-dc #life #smps
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So, on my last DC-DC converter, I left off messing around with the control loop. I got it working decently, but there were still some oscillations. Thinking about it, this was probably due to ADC resolution, which is 10 bits on that microcontroller, while the PWM register I was using is 8 bits.
If you think about it (which I didn't initially), that means that you get quantization error, since the ADC can read voltages and currents the PWM (via the MOSFETs and the rest of the converter) won't produce. In other words, the controller is demanding more than what the converter can do.
I think I can maybe add some extra filtering to fix that. In the future, I'll try using the 16 bit register for PWM as well.
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So, on my last DC-DC converter, I left off messing around with the control loop. I got it working decently, but there were still some oscillations. Thinking about it, this was probably due to ADC resolution, which is 10 bits on that microcontroller, while the PWM register I was using is 8 bits.
If you think about it (which I didn't initially), that means that you get quantization error, since the ADC can read voltages and currents the PWM (via the MOSFETs and the rest of the converter) won't produce. In other words, the controller is demanding more than what the converter can do.
I think I can maybe add some extra filtering to fix that. In the future, I'll try using the 16 bit register for PWM as well.
-
So, on my last DC-DC converter, I left off messing around with the control loop. I got it working decently, but there were still some oscillations. Thinking about it, this was probably due to ADC resolution, which is 10 bits on that microcontroller, while the PWM register I was using is 8 bits.
If you think about it (which I didn't initially), that means that you get quantization error, since the ADC can read voltages and currents the PWM (via the MOSFETs and the rest of the converter) won't produce. In other words, the controller is demanding more than what the converter can do.
I think I can maybe add some extra filtering to fix that. In the future, I'll try using the 16 bit register for PWM as well.
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Op Amp Challenge: An Op-Amp Buck Regulator - Switching regulators have delivered such convenience and efficiency compared to th... - https://hackaday.com/2023/05/01/op-amp-challenge-an-op-amp-buck-regulator/ #opampchallenge #buckconverter #contests #hardware #op-amp #pwm