Products > Test Equipment
DP100 PD-Power Supply 100Watt [0-30.00V / 0-5.000A) [∼50$]
zambetti:
--- Quote from: electr_peter on April 30, 2024, 08:01:41 pm ---DP100 manual states:
--- Quote ---with independent floating supplies like battery banks
--- End quote ---
Why would chaining two DP100 require that they are each powered by a separate battery bank?
Could they be damaged by chaining them when they are both powered by the same USB-C supply?
Or by separate DC power supplies?
--- End quote ---
electr_peter:
--- Quote from: zambetti on May 02, 2024, 08:40:43 am ---Why would chaining two DP100 require that they are each powered by a separate battery bank?
Could they be damaged by chaining them when they are both powered by the same USB-C supply?
Or by separate DC power supplies?
--- End quote ---
DP100 are not isolated PSUs, these cannot be connected in series if powered from the same source.
With different supplies it should work, regular considerations for series connection apply.
Phil1977:
--- Quote from: electr_peter on May 02, 2024, 03:03:24 pm ---
DP100 are not isolated PSUs, these cannot be connected in series if powered from the same source.
With different supplies it should work, regular considerations for series connection apply.
--- End quote ---
Please also pay attention to the Current measurement on the "-"output of the DP100. If you connect more than one DP100 without galvanic isolation or if you even just use one DP100 e.g. on a 24V-powered DC system then you must not connect the circuitry on the DP100 anywhere with the rest of the system. Not even just by a data cable with ground connection or shielding! If you do anyhow you have no indication or regulation of the flowing current.
I´d always recomment to either use
- galvanically isolated lab PSUs, or
- common ground lab PSUs
That´s both not possible with the DP100 without an additional isolating converter.
confusion:
Sorry to hijack the thread but I wanted power my DP100 unit using 28v from a powerbank. Ugreen PD 140W
The powerbank is listed as having PD3.1 (Do you need PD3.1 for 28v?)
https://www.aliexpress.com/item/1005005654971205.html?spm=a2g0o.order_list.order_list_main.46.21ef18027neftP
The advertising material is contradictory. In the listing it says:
USB-C1 output: 5V=3A 9V=3A12V=3A 15V=3A 20V=5A 28V=5A
However in the pictures it says it only goes up to 20v
I was intending to decoy the powerbank to deliver 28v by using another Alientek product I own, the UT70 usb tester. https://www.aliexpress.com/item/1005006116220488.html?spm=a2g0o.order_list.order_list_main.261.26d318027lkAB4
So it's a bit confusing as to whether or not the powerbank can even deliver 28v and if I'll damage it in some way if I try.
Any help would be much appreciated. Cheers.
PS: The DP100 came with a female DC barrel jack to usb c cable. Am I correct in assuming the barrel jack is 5.5mm x 2.1mm ID? Or is it 5.5mm x 2.5 ID?
I was wondering if I could use this decoy board in place of the UT70.
https://www.aliexpress.com/item/1005005397916454.html?spm=a2g0o.productlist.main.9.61e37894qRCE67&algo_pvid=5ae51f20-0d9a-46ad-be54-fbf1ebbc8351&algo_exp_id=5ae51f20-0d9a-46ad-be54-fbf1ebbc8351-4&pdp_npi=4%40dis%21AUD%213.84%212.88%21%21%212.51%211.88%21%402101effb17172477897311871e7683%2112000032900047201%21sea%21AU%21724890917%21&curPageLogUid=f7SdzNhm8WHo&utparam-url=scene%3Asearch%7Cquery_from%3A
I can't work out how to set the voltage on it
and what is emark?
DaneLaw:
PD3.1 works fine with DP100 when used with a trigger..
It has nothing to do with the DP100, as that unit cannot handshake for any higher than 20V/5A_100W (PD3.0) and below, including. Qualcomm's quick charge protocols.
If you wanna use PD3.1 28V/5A_140W then you need a PD3.1 trigger and if your PD3.1 trigger ain't directly attached to the PD3.1 source (powerbank/PSU), you will also need a cable with a corresponding chip, that allows for PD3.1 voltage & current between the PD3.1 powersource and the trigger before PD3.1 units deliver/opens up for that higher voltage, so you don't risk dumping that power/voltage into a normal TypeC-cable that can't say no, and wont have the strains to carry that momentum.
You can't damage the power bank, as either it got PD3.1 or it don't.. What you can damage are items AFTER the trigger, as they will be stop-fed the triggered voltage, and don't have any saying in the equation, that includes. cables, devices down the chain.. and it's 100% up the end-user that are using these crude PD triggers to make sure that anything after the trigger can handle that triggered voltage/current.
So on the DP100' when you run it from a PD3.1 source - your not using PD handshakes at all.. DP100 will just see it as a crude 28v DC 2p power line.
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