NDLI: Buck converter IC for brushless DC motor drive using voltage-mode PWM controller

Content Provider	IET Digital Library
Author	Sung, Guo Ming Lee, Chun Ting Chen, Zhao Long
Abstract	This study proposes a buck converter IC with voltage-mode pulse-width modulation (PWM) controller to provide a stable bias voltage for the brushless DC motor drive. The proposed buck converter IC comprises an error amplifier, a hysteresis comparator, a linear ramp generator, a driving circuit, a non-overlapping circuit, a bootstrap circuit and a level shifter. By integrating these proposed circuits into a single chip, the performance of buck converter chip could be improved significantly. The PWM controlled signal was used to generate a suitable output voltage by modifying the duty cycle. The advantage of this method is that the control method of the feedback circuit can be implemented easily, has a short ON time, and has effective noise immunity. After verifying the designed functions, the proposed IC was fabricated using TSMC 0.25 μm 1P3M complementary metal oxide semi-mixed signal process. Measurement results illustrate that the output voltage, output current, line regulation, load regulation, output ripple voltage and peak power efficiency were 5 V, 200 mA, 13.33 mV/V, 18.5 mV/A, 30 mV, and 68%, respectively, at an input voltage of 15 V and a switching frequency of 100 kHz. The chip area was ∼1.480 × 0.999 mm2.
Starting Page	2555
Ending Page	2561
Page Count	7
ISSN	17554535
Volume Number	13
e-ISSN	17554543
Issue Number	Issue 12, Sep (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/13/12
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2019.1482
Journal	IET Power Electronics
Publisher Date	2020-05-29
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Amplifiers Bootstrap Circuit Brushless DC Motor Brushless DC Motor Drive Buck Converter Chip Buck Converter IC Circuit Feedback Control Method Current 200.0 MA D.C. Machines DC Motor Drive Drive Driving Circuit Efficiency 68 Percent Error Amplifier Voltage Feedback Circuit Frequency 100.0 KHz Function Generator Nonoverlapping Circuit Output Ripple Voltage Peak Power Efficiency Power Converter Power Electronics Power Supplies to Apparatus Power Supply PWM Controlled Signal PWM Power Converter Ramp Generator Reference Voltage Size 0.25 Mum Stable Bias Voltage Supervisory Circuit TSMC 0.25 Μm 1P3M Complementary Metal Oxide Semimixed Signal Process Voltage 15.0 V Voltage 30.0 MV Voltage 5.0 V Voltage-mode Pulse-width Modulation Controller Voltage-mode PWM Controller
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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