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Author Topic: DP100 PD-Power Supply 100Watt [0-30.00V / 0-5.000A) [∼50$]  (Read 25202 times)

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Offline Phil1977

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Re: DP100 PD-Power Supply 100Watt [0-30.00V / 0-5.000A) [∼50$]
« Reply #50 on: July 18, 2024, 05:01:30 pm »
Maybe the VBUS is not directly routed from the plug to the chip - I do not know if the chip needs it to do the negotiation or if its just connected to CC1 and just does the "paperwork". I´ll have a look this weekend.
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Offline Phil1977

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Re: DP100 PD-Power Supply 100Watt [0-30.00V / 0-5.000A) [∼50$]
« Reply #51 on: July 18, 2024, 07:55:16 pm »
Good news: While the DP100 is powered by non-managed 30V DC, the maximum voltage on the CH224K VBUS pin is 10V, VDD is around 2V. It seems that the device only powers this chip if it initializes the power delivery.
« Last Edit: July 18, 2024, 07:56:47 pm by Phil1977 »
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Offline icpart

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Re: DP100 PD-Power Supply 100Watt [0-30.00V / 0-5.000A) [∼50$]
« Reply #52 on: July 28, 2024, 02:41:17 pm »
I just make fast search about good load switch ITS428L2. Seems that be good candiate for that job. It is have all protections inside is, maybe t will not need PCB if can handle load current.
https://eu.mouser.com/ProductDetail/Infineon-Technologies/ITS428L2?qs=sGAEpiMZZMvjbjwkTuU2aZXYNMpOS50Yh7EhO2KKWBw%3D
As I tried figured out that if my DP100 have that undershoot issue time ago I tested it with USB-C charger and my portable OWON hds2202s and there didn't have such problem as I remmeber, but maybe need to test it again.
« Last Edit: July 28, 2024, 02:47:26 pm by icpart »
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Offline caind

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Re: DP100 PD-Power Supply 100Watt [0-30.00V / 0-5.000A) [∼50$]
« Reply #53 on: July 29, 2024, 12:38:03 pm »
The ITS428L2 needs at least 4.75 V. You certainly don't want to use the DP100 for output voltages ≥ 4.75 V only...
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