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What is a digital power supply?
- Thread starter Linnaeus
- Start date
Solution
Someone Somewhere
Titan
- Sep 23, 2012
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Marketing.
More specifically, they let you connect a data line between the PSU and you computer so that you can see how much power you're drawing and how efficient it is. Unfortunately, the calibration is useless.
More specifically, they let you connect a data line between the PSU and you computer so that you can see how much power you're drawing and how efficient it is. Unfortunately, the calibration is useless.
- May 18, 2007
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It simply means that instead of using an analogue PWM controller, they are using a microcontroller/DSP instead.
On the plus side, this means they can get rid of most of the analog stuff that can drift a lot over time and replace it by programming which opens up a lot of possibilities that would require way too many components to implement in analogue circuitry and be much too difficult to get working right that way but at the same time, it makes the PSU vulnerable to more software glitches as the software becomes more complex.
On the plus side, this means they can get rid of most of the analog stuff that can drift a lot over time and replace it by programming which opens up a lot of possibilities that would require way too many components to implement in analogue circuitry and be much too difficult to get working right that way but at the same time, it makes the PSU vulnerable to more software glitches as the software becomes more complex.
Someone Somewhere
Titan
- Sep 23, 2012
- 22,291
- 8
- 84,965
- May 18, 2007
- 23,815
- 5,265
- 108,890
Someone Somewhere
Titan
- Sep 23, 2012
- 22,291
- 8
- 84,965
Dark Lord of Tech
Retired Moderator
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http://www.corsair.com/en-us/ax1200i-digital-atx-power-supply-1200-watt-80-plus-platinum-certified-fully-modular-psu
Dark Lord of Tech
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SlayZombi
Honorable
- Jan 3, 2014
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Now that I look at it in depth after finally finding the link (lol) A regular power supply is worth more then the digital, since digital will obviously cost a bit more.... I mean it's a power supply, raw, reliable power beats any digital hooplah...
Dark Lord of Tech
Retired Moderator
- Aug 18, 2009
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From a design point of view, a DSP-based PWM has the ability to do a lot of things that would not be practical or even possible at all with a conventional analogue controller: digital filters have zero phase shift, zero aging drift, zero additional PCB footprint for higher orders, have no need for external compensation components because the transient response can be compensated by a simple FIR filter, you can control all output rectifier MOSFETs independently to regulate all rails from a single output winding if you want to, etc. The possibilities are nearly endless.
I suspect most Titanium-class PSUs are going to end up being digital PWM due to all the optimization opportunities it provides.
BTW, the VRM on most modern motherboards are mostly digital too.
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