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Quad output bench power supply

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MarkL:

--- Quote from: nctnico on November 17, 2024, 07:02:16 pm ---Keep in mind that the TTi PSUs are switching PSUs. Their noise performance isn't stellar. I wouldn't want those on my bench for doing R&D work.

--- End quote ---
The MX series are switching supplies with a linear post-regulator.  It depends on what you're doing, but the noise is not bad.  Ripple & Noise from the spec sheet, 20MHz BW limited:

  Conditions: O/P 1&2 loaded at 15V/10A, O/P 3 loaded at 5.5V/3A, or for O/P 1 loaded at 15V/20A, 30V/12A, or 60V/6A (O/P 2 disabled):

    All outputs typically <2mVrms, <15mV pk-pk; 3mVrms max.

    O/P 1 loaded at 120V/3A: typically <3mVrms, <20mV pk-pk; 6mVrms max.

The OP did not specify noise requirements, but for development bench use I agree a full switcher is not a good choice.

KungFuJosh:
Siglent SPD4306X:

CH1: Voltage 0 to 15 V, Current 0 to 1.5 A
CH2: Voltage 0 to 30 V, Current 0 to 6 A
CH3: Voltage 0 to 30 V, Current 0 to 6 A
CH4: Voltage 0 to 15 V, Current 0 to 1 A

CH2 and CH3 series and parallel connections - parallel up to 12A, series up to 60V

https://siglentna.com/wp-content/uploads/dlm_uploads/2024/08/SPD4000X_DataSheet_EN01B.pdf
https://siglentna.com/wp-content/uploads/dlm_uploads/2024/08/SPD4000X_UserManual_EN01B.pdf

kaffine:
Thanks for the suggestions. 

The old power supplies we were running are HY3005F-3 with various brand names Dr Meter is the one I can remember.  The issue we had with them is when set for 5V when power cycled they would over shoot by enough that it burnt up a few things.  Reading the linked thread it seems the overshoot issue with the HMP4040 is when transitioning from CV to CC it isn't overshooting the CV limit just overshooting the CC limit.  We don't use CC much mostly for locating shorts and we set the voltage to 0.5 and current limit to 2 amps to essentially make a 4 wire ohm meter. 

As far as switching vs linear while it might be nice to have a linear supply low noise while troubleshooting all of the chassis the boards would be installed in are running switching supplies. 

A good portion of our  boards wont boot with only 5 amps and a few wont boot with 7 amps and they are wanting more and more power.



J-R:
Have all the power supplies power up, enable output, then feed through a relay board that you can control independently.

Chicane:
UNI-T UDP3305S
4ch (2x 0-30V, 5A ; 1x 0-6V 3A ; 1x5V 3A), 330W, programmable through LAN and RS232, SCPI remote control. It has good reviews and you can even find teardowns on Youtube. Best part is, you can buy 7-8 of those for the price of one R&S. Saw a review of that tested it and no overshoots. It appeared to be very well designed and made. 

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