infineon公司的IDP2303是具有浮动高边驱动器和600V起动单元的多模式PFC和LLC控制器,其数字引擎提供多模式工作的先进算法,在整个负载范围内支持最高的效率.主要用在75W-300W LCD-TV和通用的开关电源.本文介绍了IDP2303产品亮点和主要特性,框图,应用电路,以及120W开关电源(SMPS)演示板主要特性,指标和优势,电路图,材料清单和PCB设计图.
The IDP2303 is a multi-mode PFC and LLC controller combined with a floating high side driver and a startup cell. Adigital engine provides advanced algorithms for multi-mode operation to support highest efficiency over the whole loadrange. A comprehensive and configurable protection feature set is implemented.Only a minimum of externalcomponents are required with the low pin count DSO-16 package. The integrated HV startup cell and advanced burstmode enable to achieve low stand-by power. In addition a one-time-programming (OTP) unit is integrated to provide awide set of configurable parameters that help to ease the design in phase.
The IDP2303 is a digital Combo-LLC controller to support application topologies with a multi-mode PFC andhalf-bridge LLC stage. The IC consists of a smart digital core that provides advanced algorithms for multimodeoperation and a variety of protection features. A high degree of forward integration is realized byimplementing a floating HV gate driver and a HV startup cell in a slim PG-DSO-16 package. Multifunctionalpins ensure a very low component count in the application.
The IC supports highest design-in flexibility in the application by means of an advanced set of configurableparameters. The configuration can be done via a half duplex UART interface at pin MFIO.
IDP2303产品亮点:
• Integrated 600V startup cell
• Integrated floating driver based on coreless transformer technology
• Digital multi-mode operation for higher efficiency curve
• Supports low stand-by power by means of direct X-cap discharge function andadvanced burst mode control
• Eliminates the auxiliary power supply by means of integrated startup cell andburst mode
• UART interface for communication and in-circuit configuration
• Flexible design-in by means of one time programming capability for a widerange of parameters
IDP2303主要特性:
• Multi-mode PFC
• Configurable PFC gate driver
• Synchronous PFC and LLC burst mode control
• Configurable non-linear LLC VCO curve
• Configurable soft-start
• VAC input voltage sensing and X cap discharge via HVPin
IDP2303应用:
• LCD-TV 75W~ 300W
• Generarl SMPS
图1.IDP2303框图
图2.IDP2303典型应用电路图
120W开关电源(SMPS)演示板24 V 3.5 A 12 V 3 A
The demo board described in this document is a 120 W SMPS using a digital PFC-LLC combi controller (the IDP2303), which is the second generation of digital combi controller with a 16pin package developed by Infineon Technologies. The IDP2303 is specially designed for switch mode power supplies used in TV power system applications.
The IDP2303 is a highly integrated multi-mode power factor correction (PFC) and half-bridge LLC (HB LLC) controller. Multi-mode operation of the PFC controller and zero voltage switching of the LLC MOSFETs can significantly increase the power conversion efficiency, especially light load efficiency, while the system costs are minimized by the integrated high-voltage start-up cell, regulator for the PFC converter, MOSFET drivers and internal communication between the PFC and LLC controllers. The auxiliary power supply can be eliminated by the integrated high-voltage start-up cell and advanced burst mode control. With an active X-CAP discharge function, low stand-by power consumption during burst mode is supported. A comprehensive set of built-in protection features can greatly enhance the system operation and safety. Up to 40 different parameters ensure flexibility during system design and achieve optimal performance. All of these features make the IDP2303 a very competitive AC-DC controller for PFC-HB LLC resonant converter.
DPAK power MOSFETs are used in this reference design. For LED TVs, a slim SMPS board is a desire and also a challenge due to the limitations of active and passive components. Compared to FullPAK MOSFETs which are used in conventional TV SMPS design, DPAK MOSFETs have the advantage of being thinner and also easier to assemble. In this reference design, two IPD60R400CE are used in parallel for the PFC stage, and two IPD60R1K5CE are used in the LLC stage.
120W开关电源(SMPS)演示板主要特性:
Integrated startup cell for low standby power
Support multi-mode PFC operation for optimized efficiency curve
Synchronous PFC and LLC burst mode control with soft-start to prevent acoustic noise
Comprehensive parameters for configuring PFC and LLC operation
Configurable and comprehensive protection features for PFC/LLC/IC temp
IEC62368-1 certified active X-cap discharge function
Flexible IC parameter setting with digital UART interface
120W开关电源(SMPS)演示板优势:
No auxiliary power supply needed
Low BOM count and small form factor design due to high integration of digital control and reduction of external components
Easy design of system schematic and PCB layout
High system reliability
Shorter development cycles and higher design and production flexibility
图3.120W开关电源(SMPS)演示板外形图(正面)
图4.120W开关电源(SMPS)演示板外形图(背面)
120W开关电源(SMPS)演示板主要指标:
图5.120W开关电源(SMPS)演示板电路图
120W开关电源(SMPS)演示板材料清单:
图6.120W开关电源(SMPS)演示板PCB设计图(正面)
图7.120W开关电源(SMPS)演示板PCB设计图(背面)
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