LDO Behavioral Model Generation from Datasheet Parameters
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Solution Overview
Problem
Manufacturers face challenges in characterizing and modeling low drop-out voltage regulators (LDOs) in electronic circuits due to lack of exact configuration and component values, requiring complex and time-intensive characterizations.
Innovation Solution
A specialized computer system transforms data sheet parameters of LDOs into a behavioral model, using base models for both fixed and variable output voltage LDOs, outputting the model in formats like netlist or VHDL for simulation with SPICE, thereby simplifying the modeling process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex, time-intensive characterizations and modeling are performed to obtain exact configuration and component values of the LDO IC, then modeling precision is improved, but loss of time increases
Solution Approach 1:
The patent creates a behavioral model that replicates the electrical characteristics of the LDO IC without requiring physical characterization. The model uses standardized equivalent circuits and parameter extraction from datasheets to produce a functional copy that behaves identically to the actual device in simulations, eliminating the need for time-consuming physical measurements.
Solution Approach 2:
The patent performs preliminary parameter extraction and model generation before circuit simulation is needed. By creating a ready-to-use behavioral model from datasheet parameters in advance, the system eliminates the need for repeated characterization work when circuits need to be simulated or analyzed.
2Reliability
If complex, time-intensive characterizations and modeling are performed to obtain exact configuration and component values of the LDO IC, then reliability of the circuit model is improved, but productivity decreases
Solution Approach 1:
The patent transforms physical LDO parameters (dropout voltage, power consumption, current consumption, etc.) into behavioral model parameters that can be directly used in circuit simulators. This parameter transformation maintains model reliability while dramatically improving productivity by enabling rapid model generation without iterative characterization.
Solution Approach 2:
The patent replaces the mechanical/physical characterization process with an automated computational approach. Instead of performing physical measurements and manual model construction, the system uses automated parameter extraction and model generation algorithms to produce reliable circuit models efficiently.
3Manufacturing precision
If detailed internal configuration and component values of the LDO IC are obtained through complex characterization, then manufacturing precision of the model is improved, but device complexity increases
Solution Approach 1:
The patent extracts only the essential behavioral parameters from the LDO IC datasheet (dropout voltage, power consumption, current consumption, etc.) and uses these to construct a simplified behavioral model. This extraction approach achieves sufficient modeling accuracy without requiring or representing the complex internal configuration and component values of the actual LDO circuitry.
Solution Approach 2:
The patent segments the LDO IC into functional behavioral blocks (voltage regulation, power consumption, current consumption) that can be independently characterized and combined. This segmentation allows accurate modeling of overall LDO behavior while avoiding the need to model each individual internal component and connection.
Data Source
AI summary
A specialized low drop-out voltage regulator (LDO) computer system stores a generalized base model of an LDO. The base model includes values representing a circuit topology and a set of analog behavior blocks associated with the generalized LDO. Values of a set of operational parameters associated with a specific model of LDO are input to the specialized LDO computer system from a data sheet associated with the specific model of LDO. The specialized LDO computer system transforms the set of operational parameters into a computer model of the specific LDO. The LDO-specific computer model is output as a netlist or as a set of instantiation control values to control external hardware such as an integrated circuit die tooling system or a computer graphical display system.