Electrical switching device for generating current control electrical signal

Through the controlled cascode current mirror structure and high-voltage protection design, the high voltage requirement of the current-controlled stimulation device under high load impedance is solved, a high-quality and compact current-controlled stimulation channel is realized, and the robustness and scalability of the device are enhanced.

CN120642209APending Publication Date: 2025-09-12NEUROLOOP
1 Cites 0 Cited by

Patent Information

Application Number
CN202480008619.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-02-20
Filing Date
2024-02-16
Publication Date
2025-09-12

AI Technical Summary

Technical Problem

Existing current-controlled stimulation devices require high voltage under high load impedance conditions, which means that the IC design requires high-voltage CMOS process, the number and combinability of stimulation channels are insufficient, and the switching topology structure is not compact enough.

Method used

A controlled cascode current mirror structure is adopted. The gate terminal of the fourth transistor is connected to a constant external supply voltage in a switchable manner, and the output resistance is significantly increased. The fourth transistor acts as a static switch, combined with the high-voltage protection transistor and the switching matrix to achieve diversified switching connections.

Benefits of technology

The quality and scalability of the stimulation channel are improved, the robustness to voltage fluctuations is enhanced, the device size is reduced, and efficient current-controlled stimulation is achieved.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

There is described an electrical switching device for generating a current control electrical signal in a controlled cascode current mirror manner for functional in vivo stimulation, comprising first, second, third and fourth transistors, each transistor having associated source, drain and gate terminals, the second and fourth transistors are connected in an output cascode structure such that a source terminal of the fourth transistor is connected to a drain terminal of the second transistor and a drain terminal of the fourth transistor is connected to an output contact associated with the electrical switching device, a voltage potential associated with the current control electrical signal can be acquired at the output contact. The invention is characterized in that the gate terminal of the fourth transistor is connected in a switchable manner to at least one constant specifiable voltage potential.
Need to check novelty before this filing date? Find Prior Art