An Automotive-Grade Monolithic Masterless Fault-Tolerant Hybrid Dickson DC–DC Converter for 48-V Multi-Phase Applications

Mojtaba Ashourloo; Venkata Raghuram Namburi; Gerard Villar PiqueJohn PigottHenk Jan BergveldAlaa El SherifOlivier Trescases

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An Automotive-Grade Monolithic Masterless Fault-Tolerant Hybrid Dickson DC–DC Converter for 48-V Multi-Phase Applications

机译：An Automotive-Grade Monolithic Masterless Fault-Tolerant Hybrid Dickson DC–DC Converter for 48-V Multi-Phase Applications

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摘要

Autonomous-driving features necessitate a fault-tolerant (FT) power-management unit in 48-V automotive applications. This article presents a monolithic single-phase closed-loop masterless FT four-to-one hybrid Dickson converter IC for high-conversion-ratio 48-V automotive multi-phase applications. The chip includes: 1) a mixed-signal droop-based valley-current ON-time quasi-fixed-frequency control, which enables masterless multi-phase operation capability; 2) single-point short-circuit fault and open-circuit fault detection and blocking of any power switches or flying capacitors; 3) an optimized high-voltage (HV) power stage with fully integrated flying-capacitor-sourced gate drivers without any external bootstrap capacitors; 4) a glitch-free cross-coupled bootstrapped HV level shifter; and 5) a dual-leg bidirectional closed-loop current-sensing circuit optimized for the hybrid Dickson topology. The design was fabricated in a 0.13- $mu text{m}$ 90-V automotive silicon-on-insulator (SOI) bipolar-CMOS–DMOS (BCD) process. The measured results confirm the operation over 20–60-V input, 3.3-V nominal output, 3-A maximum load, and 320-kHz effective switching frequency within the automotive-grade ?40 °C–+125 °C ambient temperature. The design achieves above 90% measured efficiency at maximum conversion ratio and load at room temperature. A three-phase system is used to evaluate and confirm the fault-blocking capability and continuous power delivery upon detection of a fault.

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来源
《IEEE Journal of Solid-State Circuits》 |2021年第12期|3608-3618|共11页
作者
Mojtaba Ashourloo; Venkata Raghuram Namburi; Gerard Villar PiqueJohn PigottHenk Jan BergveldAlaa El SherifOlivier Trescases;
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作者单位

Power Management Department, NXP Semiconductors Inc, Eindhoven, The Netherlands;

Safety and Power Management Department, NXP Semiconductors Inc, Chandler, AZ, USA;

The Edward S. Rogers Sr. Department of Electrical & Computer Engineering (ECE), University of Toronto, Toronto, ON, Canada;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类基本电子电路;
关键词
Capacitors; Logic gates; Circuit faults; Switches; MOS devices; Gate drivers; Fault tolerant systems; Automotive applications; dc-dc power conversion; fault diagnosis; fault tolerance; integrated power management circuit; masterless control; monolithic implementation; multi-phase converter; switched capacitor;

An Automotive-Grade Monolithic Masterless Fault-Tolerant Hybrid Dickson DC–DC Converter for 48-V Multi-Phase Applications

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