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SockpuppetSamplesBoi: recommend a buck converter
I want to replace a massive 13V / 4A wall wart with a 15V trigger cable connected to a PD power supply. The PD supply can deliver up to 100W.
Can you suggest a high quality SKU?
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SamplesBoiRe: SamplesBoi: recommend a buck converter
In the end you are trying to regulate 15V down to 13V? You sure the device taking the 13V can't tolerate 15V?
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SamplesBoiRe: SamplesBoi: recommend a buck converter
Lots of options to get voltages to 12V. 13V is a little harder. Looks like you need an adjustable one.
Anyway, it's not like I memorize parts. I go looking like everyone. DigiKey parametric search is good a lot of the time. Not today. I did find this:
Shyt, my bad, the total wattage on this thing is at most 15W. WEAK! I will have to keep looking.
https://www.ebay.com/itm/195695225691
This has the input and output ranges you are looking for and the current capacity is over 4A. I expect it would work. You need a multi-meter and a small flat head screwdriver (better yet a plastic one made for adjusting pots) to adjust the pot. Dial it in and make sure it stays correct under load. It might drift a little under load. This guy has sold quite a few of these and has a good reputation.
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SamplesBoiRe: SamplesBoi: recommend a buck converter
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SockpuppetRe: SamplesBoi: recommend a buck converter
Thank you. I thought maybe these were common enough that you would know a reputable brand.
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Re: SamplesBoi: recommend a buck converter
Just soak the wart in olive oil for 48 hours.
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.Re: SamplesBoi: recommend a buck converter
Ahh... shouldn't you include Heekee in a "buck" thread? 
BTW, be careful with those low-cost DC-to-DC converters, they will have a lot of ripple under high-current loads.
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Re: SamplesBoi: recommend a buck converter
Sockpuppet wrote:
I want to replace a massive 13V / 4A wall wart with a 15V trigger cable connected to a PD power supply. The PD supply can deliver up to 100W.
Can you suggest a high quality SKU?
Notice he doesn't say "please" or "thank you"
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SpankyRe: SamplesBoi: recommend a buck converter
wrote:
Notice he doesn't say "please" or "thank you"
See post #5.
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SpankyRe: SamplesBoi: recommend a buck converter
. wrote:
Ahh... shouldn't you include Heekee in a "buck" thread?
BTW, be careful with those low-cost DC-to-DC converters, they will have a lot of ripple under high-current loads.
The spec sheet for the product (Elgato Key Light) was wrong. It said 13V / 4A. But the actual power supply I received was 15V / 3.5A. Will just migrate to 15V PD trigger cable. PD only supports 3A @ 15V, but I won't be running this at full output power anyway so I should be good.
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SpankyRe: SamplesBoi: recommend a buck converter
Spanky wrote:
The spec sheet for the product (Elgato Key Light) was wrong. It said 13V / 4A. But the actual power supply I received was 15V / 3.5A. Will just migrate to 15V PD trigger cable. PD only supports 3A @ 15V, but I won't be running this at full output power anyway so I should be good.
This worked!
Fuq wall warts!
USB POWER DELIVERY 4EVAH!!
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