Integrated Power Management Circuits and Systems
We develop integrated power management circuits for mobile devices, AI computing platforms, and energy-autonomous sensor systems, with a focus on high-efficiency power conversion and compact system integration.
1. Battery-Powered PMICs for Mobile and Edge-AI Devices
We develop highly efficient power management circuits for Li-ion battery-powered mobile and Edge-AI devices. Our research focuses on compact power conversion with high efficiency and fast response over wide operating conditions.
Research Topics
High-efficiency integrated DC–DC converters
Fully integrated switched-capacitor DC–DC converters
Fast load-transient response, high power conversion efficiency, wide input/output voltage range, etc.
2. High-Voltage PMICs for AI and HPC Systems
We investigate high-voltage and high-current power management circuits for AI accelerators and high-performance computing systems. Advanced converter architectures are explored to achieve high efficiency, fast transient response, and high power density.
Research Topics
Hybrid DC–DC converters for high input voltage (12 V ~ 60 V)
High-step-down architectures for sub 1-V supply
High-current power delivery
2.5D and 3D point-of-load converter for chiplet architectures
3. Energy-Harvesting Systems and Ultra-Low-Power Sensor Nodes
We develop energy harvesting interfaces and ultra-low-power power management circuits for autonomous sensor and IoT systems. Our research enables reliable sensing and operation under limited or intermittently available energy.
Research Topics
Multi-source energy harvesting (thermoelectric, photovoltaic, triboelectric, and piezoelectric transducers)
Efficient and accurate maximum power point tracking algorithm
Energy combiners for semi-permanent operation
Ultra-low-power sensor nodes for low-earth-orbit satellites
4. Fully Integrated Voltage Regulators for Processors
We develop fully integrated voltage regulators for compact and efficient on-chip power delivery. Our research focuses on eliminating bulky external capacitors while achieving fast load-transient response, stable regulation over wide operating conditions, and low-voltage operation with high current efficiency.
Research Topics
Fully integrated capless low dropout regulators (LDOs)
Hybrid architectures for fast load-transient response
Stability and power-supply rejection