Dual-Boost Charge Pump Tracker Circuitry for 5G Power Delivery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
5G-NR wireless communication systems require charge-pump tracker circuitry that can deliver higher voltages and currents for average power tracking and provide efficient power delivery in envelope tracking mode, but existing solutions are not adequately reconfigurable to meet these demands.
Innovation Solution
The charge-pump tracker circuitry features a dual-boost charge pump with switch networks and a controller that switches capacitors in parallel and interleaved modes to optimize power delivery, allowing for higher efficiency in both average power tracking and envelope tracking operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single charge pump configuration is used, then device complexity is reduced, but the ability to deliver higher voltages and currents for average power tracking and efficient power delivery for envelope tracking is compromised
Solution Approach 1:
The charge pump is divided into two separate boost charge pumps (first and second) that can operate independently or together. Each pump has its own switch network and capacitor, allowing them to be controlled separately for different tracking modes while maintaining overall system functionality.
Solution Approach 2:
The dual-boost charge pump system is designed to perform multiple functions: it can deliver high voltages and currents for average power tracking when both pumps operate, and provide efficient power delivery for envelope tracking when pumps operate in alternating fashion. The same hardware structure supports both operational modes.
2Power
If capacitors discharge in unison, then power delivery capability is increased for envelope tracking, but efficiency is reduced compared to alternating discharge
Solution Approach 1:
The switch controller is configured to alternate the discharge timing of the first and second capacitors, creating a periodic action pattern. This allows the capacitors to discharge in an alternating fashion rather than simultaneously, improving efficiency by reducing peak current demands and allowing for better energy management.
3Power
If higher voltages and currents are delivered for average power tracking, then power demand requirements are met, but power delivery efficiency decreases
Solution Approach 1:
The power delivery function is segmented between two separate boost charge pumps, each capable of operating independently. This segmentation allows the system to deliver high voltages and currents when needed for average power tracking while maintaining efficiency through the alternating operation capability of the divided system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enables higher power delivery efficiency, supporting continuous power in average power tracking and efficient power delivery in envelope tracking, meeting the power demands of 5G-NR wireless devices with improved voltage and current handling.
Implementation Method 1
a first switch network configured to couple a first capacitor between a voltage input terminal and a ground terminal during a first charging phase and couple the first capacitor between the voltage input terminal and a pump output terminal during a first discharging phase
Implementation Method 2
a second switch network configured to couple the second capacitor between the voltage input terminal and the ground terminal during a second charging phase and couple the second capacitor between the voltage input terminal and the pump output terminal during a second discharging phase
Data Source
AI summary
Charge-pump tracker circuitry is disclosed having a first switch network configured to couple a first capacitor between a voltage input terminal and a ground terminal during a first charging phase and couple the first capacitor between the voltage input terminal and a pump output terminal during a first discharging phase. A second switch network is configured to couple the second capacitor between the voltage input terminal and the ground terminal during a second charging phase and couple the second capacitor between the voltage input terminal and the pump output terminal during a second discharging phase. A switch controller is configured to control the first switch network and the second switch network so that the first discharging phase and the second discharging phase are in unison in a parallel mode and so that the first discharging phase and the second discharging phase alternate in an interleaved mode.