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UCD90160A: Solution for Sequencing and monitoring of negative supplies

Part Number: UCD90160A
Other Parts Discussed in Thread: UCD90160

Hi team,

We have a customer looking for a solution for Sequencing and monitoring of negative supplies and he initially looks at UCD90160A if this device has an application for sequencing and monitoring of negative supplies.
We would like to ask some help if you have a recommendation for the customer requirement below for the voltage supplies he wants to manage:

1) +24V switched,
2) +24V Switched,
3) + 24V Switched.
4) +24V Switched (all +24V supplies switched with FETs),
5) +16V,
6) +12V,
7) +6V,
8) +6V,
9) +5V,
10) +5V,
11) +5V,
12) +3.3V,
13) -13V,
14) -16V.
The duplicates are individual PPSs. Analog and Digital. Some low noise. Some high current. We will be switching the +24V input using FETs. One is for the cooling fans etc.

Please let me know if you have other questions for the customer.

Happy new year!

Regards,

Jonathan

  • Hello

    In order to monitor negative voltage, you have to use some external circuits to convert the negative voltage to positive and connect the positive voltage to MONx pins of UCD90160. You can use Op AMP as shown in below to convert a negative voltage of [-5V, -1V] to [0.05V, 3.3V]. Op AMP may have better documents about negative voltage conversion.

    As for the power supply, it is up to VIN, current, VOUT and many things. you may contact particular group based on the requirements.

    Regards

    Yihe