Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/657944
Title: Digital-Based Interleaving Control for GaN-Based MHz CRM Totem-Pole PFC
Authors: Zhengyang Liu;Zhengrong Huang;Fred C. Lee;Qiang Li
subject: gallium nitride (GaN)|Differential-mode (DM) filter|interleaving|MHz|microcontroller (MCU)|totem-pole power factor correction (PFC)
Year: 2016
Publisher: IEEE
Abstract: This paper presents a comparison between the performances of different interleaving control methods for gallium nitride devices-based MHz critical conduction mode (CRM) totem-pole power factor correction (PFC) circuit. Both closed-loop interleaving and open-loop interleaving are good for the 70-kHz CRM PFC; but for a MHz frequency CRM PFC with microcontroller (MCU) implementation, the open-loop interleaving outperforms the closed-loop interleaving with only a small and nonamplified phase error. After software optimization, the phase error of the open-loop interleaving is smaller than 3° at 1 MHz, when the control is implemented by a 60-MHz low-cost MCU. Significant ripple cancellation effect and differential-mode (DM) filter size reduction are achieved with good interleaving. For a 1.2-kW MHz totem-pole PFC, the DM filter size is reduced to one quarter when compared with the counterpart of a 100-kHz PFC. Last but not least, the stability of the open-loop interleaving is also analyzed indicating that the MHz CRM totem-pole PFC with voltage-mode control, open-loop interleaving, and turn-on instant synchronization can maintain critical mode operation with better stability compared with the 70-kHz CRM PFC.
URI: http://localhost/handle/Hannan/168647
http://localhost/handle/Hannan/657944
ISSN: 2168-6777
2168-6785
volume: 4
issue: 3
Appears in Collections:2016

Files in This Item:
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7475872.pdf4.81 MBAdobe PDFThumbnail
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Title: Digital-Based Interleaving Control for GaN-Based MHz CRM Totem-Pole PFC
Authors: Zhengyang Liu;Zhengrong Huang;Fred C. Lee;Qiang Li
subject: gallium nitride (GaN)|Differential-mode (DM) filter|interleaving|MHz|microcontroller (MCU)|totem-pole power factor correction (PFC)
Year: 2016
Publisher: IEEE
Abstract: This paper presents a comparison between the performances of different interleaving control methods for gallium nitride devices-based MHz critical conduction mode (CRM) totem-pole power factor correction (PFC) circuit. Both closed-loop interleaving and open-loop interleaving are good for the 70-kHz CRM PFC; but for a MHz frequency CRM PFC with microcontroller (MCU) implementation, the open-loop interleaving outperforms the closed-loop interleaving with only a small and nonamplified phase error. After software optimization, the phase error of the open-loop interleaving is smaller than 3° at 1 MHz, when the control is implemented by a 60-MHz low-cost MCU. Significant ripple cancellation effect and differential-mode (DM) filter size reduction are achieved with good interleaving. For a 1.2-kW MHz totem-pole PFC, the DM filter size is reduced to one quarter when compared with the counterpart of a 100-kHz PFC. Last but not least, the stability of the open-loop interleaving is also analyzed indicating that the MHz CRM totem-pole PFC with voltage-mode control, open-loop interleaving, and turn-on instant synchronization can maintain critical mode operation with better stability compared with the 70-kHz CRM PFC.
URI: http://localhost/handle/Hannan/168647
http://localhost/handle/Hannan/657944
ISSN: 2168-6777
2168-6785
volume: 4
issue: 3
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7475872.pdf4.81 MBAdobe PDFThumbnail
Preview File
Title: Digital-Based Interleaving Control for GaN-Based MHz CRM Totem-Pole PFC
Authors: Zhengyang Liu;Zhengrong Huang;Fred C. Lee;Qiang Li
subject: gallium nitride (GaN)|Differential-mode (DM) filter|interleaving|MHz|microcontroller (MCU)|totem-pole power factor correction (PFC)
Year: 2016
Publisher: IEEE
Abstract: This paper presents a comparison between the performances of different interleaving control methods for gallium nitride devices-based MHz critical conduction mode (CRM) totem-pole power factor correction (PFC) circuit. Both closed-loop interleaving and open-loop interleaving are good for the 70-kHz CRM PFC; but for a MHz frequency CRM PFC with microcontroller (MCU) implementation, the open-loop interleaving outperforms the closed-loop interleaving with only a small and nonamplified phase error. After software optimization, the phase error of the open-loop interleaving is smaller than 3° at 1 MHz, when the control is implemented by a 60-MHz low-cost MCU. Significant ripple cancellation effect and differential-mode (DM) filter size reduction are achieved with good interleaving. For a 1.2-kW MHz totem-pole PFC, the DM filter size is reduced to one quarter when compared with the counterpart of a 100-kHz PFC. Last but not least, the stability of the open-loop interleaving is also analyzed indicating that the MHz CRM totem-pole PFC with voltage-mode control, open-loop interleaving, and turn-on instant synchronization can maintain critical mode operation with better stability compared with the 70-kHz CRM PFC.
URI: http://localhost/handle/Hannan/168647
http://localhost/handle/Hannan/657944
ISSN: 2168-6777
2168-6785
volume: 4
issue: 3
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7475872.pdf4.81 MBAdobe PDFThumbnail
Preview File