Internal Regulator Standby Island Power Isolation
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Solution Overview
Problem
The existing methods for integrated circuits to switch between power on and standby modes are costly due to the need for high-current switches with low on-resistance, which are difficult to integrate, leading to increased system costs.
Innovation Solution
The implementation of an internal regulator that taps power from an external peripheral I/O power supply to isolate and independently control power to a standby island within the integrated circuit, allowing power to be maintained to I/O devices during standby mode without applying it to the IC core module, and using a power control processor to manage the main power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an external switch is used to handle high current with minimal voltage drop, then the system can switch between power on and standby modes, but the system cost increases due to the expense of the external switch
Solution Approach 1:
The patent extracts the high-current switching function from the integrated circuit and places it in the external power supply. The IC only needs to provide a low-current control signal to enable the external power supply's internal switch, which then handles the high current to the IC core. This resolves the contradiction by removing the need for expensive external switches while maintaining reliable power switching.
Solution Approach 2:
The patent introduces an intermediary power control circuit that acts as a mediator between the control logic and the power supply. This intermediary translates low-current control signals into high-current switching operations using the external power supply's internal switch, eliminating the need for expensive external switches while maintaining reliable power control.
2Use of energy by moving object
If power is removed from the IC core module during standby mode, then power consumption is reduced, but the I/O devices cannot receive commands to exit standby mode
Solution Approach 1:
The patent segments the power distribution into separate domains: the IC core module receives no power during standby mode, while the I/O devices continue to receive power through the peripheral I/O power supply. This segmentation allows the system to achieve low power consumption while maintaining I/O functionality for standby mode exit commands.
Solution Approach 2:
The patent applies different power states to different parts of the system: the IC core module is completely powered down during standby, while the I/O devices remain powered through the peripheral power supply. This local quality approach allows selective power management that reduces overall consumption while maintaining necessary functionality.
3Adaptability or versatility
If an internal regulator is used to tap power from the peripheral I/O power supply, then the standby island can be independently controlled, but the power supply architecture becomes more complex
Solution Approach 1:
The patent implements self-service by having the standby island's power control be automatically managed through the existing peripheral I/O power supply infrastructure. The internal regulator and power control circuitry use the peripheral power supply to provide regulated power to the standby island without requiring additional external power sources or complex external circuitry.
Data Source
AI summary
Systems and methods for providing power to a home entertainment integrated circuit chip are disclosed. The home entertainment integrated circuit chip can operate in at least two power control modes: “power on” mode and “standby” mode. In power on mode, power is supplied to IC core module from a main power supply. The power supplied to the IC core module is isolated from power supplied to a standby island. Accordingly, during the second mode power is applied only to the standby power island through a regulator internal to the integrated circuit chip. The regulator is coupled to an external peripheral input/output (I/O) power supply that is independent of the main power supply.