Controller for Semiconductor Power Supply Voltage Stability
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Solution Overview
Problem
Existing semiconductor systems face challenges in effectively and appropriately operating semiconductor devices using Digital Signal Processors (DSP) or Micro Control Units (MCU), as they struggle to maintain constant power supply voltage efficiently.
Innovation Solution
A controller is designed to monitor and control the power supply voltage to a semiconductor device, utilizing an input unit, a control unit, and a calculation circuit operated by a program to detect and manage voltage changes, ensuring the power supply voltage reaches a target voltage during discharge modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a DSP or MCU is used to control the power supply voltage by turning on and off a switching transistor, then the power supply voltage can be maintained at constant, but the semiconductor device cannot be effectively and appropriately operated
Solution Approach 1:
The patent divides the voltage control process into two distinct modes: discharge mode (where the switching transistor is turned off and voltage naturally decreases) and charge mode (where the switching transistor is turned on and voltage is replenished). This segmentation allows the system to achieve both voltage stability and appropriate operation by selectively applying different control strategies based on the operational phase.
Solution Approach 2:
The patent implements dynamic control by transitioning between discharge mode and charge mode based on real-time voltage monitoring. The controller dynamically adjusts the switching transistor state and selects appropriate control algorithms (first algorithm for discharge mode, second algorithm for charge mode) to maintain voltage within target ranges while enabling effective semiconductor device operation.
2Reliability
If the power supply voltage is maintained at constant using a switching transistor controlled by a program, then voltage stability is achieved, but the system cannot appropriately manage voltage changes during discharge mode
Solution Approach 1:
The patent employs feedback control by continuously monitoring the power supply voltage with a monitor circuit and comparing it against target voltage ranges. Based on this feedback, the controller determines whether to enter discharge mode or charge mode and selects the appropriate control algorithm, enabling effective management of voltage changes while maintaining overall stability.
Solution Approach 2:
The patent changes control parameters based on operational mode: in discharge mode, it uses a first control algorithm with specific parameters to manage voltage decrease, while in charge mode, it switches to a second control algorithm with different parameters to replenish voltage. This parameter adaptation enables appropriate voltage change management across different operational phases.
Data Source
AI summary
A controller is formed as one chip, and controls a voltage regulator that supplies a power supply voltage to a CPU. The controller includes: an input unit for receiving a monitor voltage for monitoring the power supply voltage applied to the CPU; a control unit for detecting that the power supply voltage is decreased to a target voltage by the monitor voltage with the voltage regulator being in OFF state in a discharge mode; and an output unit for outputting a result signal indicating to make transition to a normal mode, when the power supply voltage has reached the target voltage. The control unit includes a calculation circuit, which is operated in accordance with a program. The calculation circuit is provided between the input unit and the output unit.