Rectifier - Regulator integration

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SUMMARY

The discussion focuses on the integration challenges between a rectifier and a regulator designed in Cadence Virtuoso. The user reports that while both components function correctly in isolation, the combined output fails to provide the expected regulated voltage. Specifically, the user notes a regulated output of -0.5V when the rectified DC voltage reaches 1V, with a current output of only 2uA from the 4-stage rectifier. This indicates a potential issue with load conditions or circuit configuration during integration.

PREREQUISITES
  • Understanding of rectifier circuits, specifically 4-stage rectifiers.
  • Familiarity with voltage regulation principles and reference voltage generation.
  • Experience with simulation tools, particularly Cadence Virtuoso.
  • Knowledge of load conditions and their impact on circuit performance.
NEXT STEPS
  • Investigate load requirements for the regulator circuit to ensure proper operation.
  • Review the integration process of rectifier and regulator circuits in Cadence Virtuoso.
  • Examine the design of the reference voltage generator for potential improvements.
  • Learn about troubleshooting techniques for integrated circuit simulations.
USEFUL FOR

Electrical engineers, circuit designers, and students working on power supply design and integration of rectifier-regulator systems.

shaikss
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Hi Folks,

I have designed a rectifier and a regulator as independent entities. Both of these blocks are working fine when simulated in virtuoso independently. But when I integrate them, i.e when I connect regulator to rectifier, I am unable to see regulated output. I have attached the snapshot of rectifier and regulator blocks. For regulator, I have used another circuit to derive reference voltage Vref. Note: I have used 4-stage rectifier for which the current at the output of the rectifier is 2uA. Pls let me know why it is happening so. The first snapshot is the regulator ckt and the second one is reference voltage generator for regulator and the third is single stage rectifier block. I have used 4-stages for the rectifier. I see a regulated output voltage of -0.5V when the rectified dc voltage is saturated to 1V.
 
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Hello Shaikss... No snapshots.

2uA - in simulation? - that is essentially 0 current...sounds like no load. I do not know what is meant be 4 stage rectifier - although someone else use the term in the last few weeks, perhaps a language thing.

I'll wait for the images
 

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