18199732. BATTERY CHARGER INTEGRATED CIRCUIT FOR ADAPTIVELY LIMITING OVER-CURRENT, MOBILE DEVICE COMPRISING THE SAME AND OPERATION METHOD THEREOF simplified abstract (SAMSUNG ELECTRONICS CO., LTD.)
BATTERY CHARGER INTEGRATED CIRCUIT FOR ADAPTIVELY LIMITING OVER-CURRENT, MOBILE DEVICE COMPRISING THE SAME AND OPERATION METHOD THEREOF
Organization Name
Inventor(s)
Seunghoon Kim of Suwon-si (KR)
BATTERY CHARGER INTEGRATED CIRCUIT FOR ADAPTIVELY LIMITING OVER-CURRENT, MOBILE DEVICE COMPRISING THE SAME AND OPERATION METHOD THEREOF - A simplified explanation of the abstract
This abstract first appeared for US patent application 18199732 titled 'BATTERY CHARGER INTEGRATED CIRCUIT FOR ADAPTIVELY LIMITING OVER-CURRENT, MOBILE DEVICE COMPRISING THE SAME AND OPERATION METHOD THEREOF
Simplified Explanation
The circuit described in the abstract is a complex system designed to control the inductor current in a circuit by detecting overcurrent conditions and adjusting the control current accordingly. Here is a simplified explanation of the abstract:
- An overcurrent limiting (OCL) detector detects when the inductor current reaches a certain level and generates an OCL detection voltage.
- A control loop circuit generates a reset voltage by comparing a ramp voltage reflecting the inductor current level with an error voltage based on an operating condition.
- An adaptive OCL controller generates an OCL control current by counting pulses of the OCL detection voltage and the reset voltage.
- An oscillator generates an oscillation voltage with a frequency that varies based on the magnitude of the overcurrent limit control current.
- A switching transistor is used to switch the inductor current based on the oscillation voltage.
Potential Applications: - Power supply systems - Motor control systems - Renewable energy systems
Problems Solved: - Preventing damage due to overcurrent conditions - Improving efficiency in power management
Benefits: - Enhanced safety - Increased reliability - Improved performance
Potential Commercial Applications: - Power electronics industry - Automotive industry - Industrial automation sector
Possible Prior Art: - Similar circuits for overcurrent protection in power systems - Control loop circuits for regulating current in electronic devices
Unanswered Questions: 1. How does the adaptive OCL controller adjust the OCL control current based on the number of pulses detected? 2. What specific operating conditions trigger the generation of the error voltage in the control loop circuit?
Original Abstract Submitted
A circuit includes: an overcurrent limiting (OCL) detector configured to detect whether a level of an inductor current reaches an OCL level and to generate an OCL detection voltage; a control loop circuit configured to generate a reset voltage by comparing a ramp voltage reflecting the level of the inductor current with an error voltage generated based on an operating condition that is out of a preset operating condition; an adaptive OCL controller configured to generate an OCL control current by counting a number of pulses of the OCL detection voltage and a number of pulses of the reset voltage; an oscillator configured to generate an oscillation voltage wherein a frequency of the oscillation voltage varies based on a magnitude of the overcurrent limit control current; and a switching transistor for switching the inductor current based on the oscillation voltage.
