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[原创] TI TIDA-01501 450W高效电源参考设计

关键词:电源管理,AC/DC转换器, TIDA-01501

来源:中电网    2018-01-03

TI公司的TIDA-01501是450W高效AC/DC转换器,AC输入85V-265V,多路DC输出12-V/5-V/3.3-V,最大输出功率450W.设计电路包括前端连续模式(CCM)功率因素修正(PFC)电路(UCC28180控制器)和LLC级隔离DC/DC转换(UCC256301控制器).主要用在PC游戏,入门级服务器PSU,式PC PSU以及其它低成本AC/DC PSU.本文介绍了参考设计TIDA-01501主要特性和系统指标,框图,电路图,材料清单和PCB设计图.

The reference design is a high-efficiency and supertransient AC/DC converter with a 85- to 265-V wideAC input, 12-V/5-V/3.3-V multiplexed DC output, and a450-W maximum output, which applies well to gamingPCs, desktop PC PSUs, entry-level server PSUs, andother low-cost AC/DC PSUs. The circuit consists of afront-end continuous conduction mode (CCM) powerfactor correction (PFC) circuit, followed by an LLCstage for isolated DC/DC conversion. The design usesthe UCC28180 controller for the PFC stage andUCC256301 controller for the LLC stage to achieve acompact and robust control structure. For highefficiencyneeds, synchronous rectification is doneusing the UCC24612 and low RDS(on) MOSFETs. Thisdesign can be used as an AC/DC supply in manyapplications demanding efficient and super transientpower conversion.

This reference design is a high-efficiency and super transient AC/DC converter for desktop PC PSUs,gaming PC PSUs, entry-level server PSUs, and other low-cost AC/DC PSUs. The circuit consists of afront-end continuous conduction mode (CCM) power factor correction (PFC) circuit, followed by an LLCbasedsecond stage. The design uses the UCC28180 controller for PFC stage and UCC256301 controllerfor LLC stage to achieve a compact and robust control structure. Synchronous rectification based on theUCC24612 and low RDS(on) FETs from Texas Instruments help in achieving higher efficiencies. This reference design can be used as an AC/DC supply in many applications demanding efficient and supertransient power conversion.

The converter is designed for a wide input voltage range of 85- to 265-V AC with full power delivery overentire range and has multiplexed DC outputs of 12 V, 5 V, and 3.3 V. An output of 12 V has a maximumpower delivery of 450 W at a maximum current of 37.5 A and outputs of 5 V and 3.3 V have a totalmaximum power delivery of 180 W with arbitrary power distributions in two channels. The converter hassuper transient performance achieved by the technique of half duty cycle response for line transient and dynamic load and also has line and load regulation within ±5%.

The design has an operating peak efficiency of around 93% with 230-V AC and 91.8% with 115-V AC athalf load. The design has a high power factor > 0.96 at 230-V AC from a 50% to 100% load and meetsPFC regulations and current THD as per IEC 61000-3-2 Class D. The design form factor (110 mm × 144mm) is compact for the power level of 450 W. The single-layer PCB design achieves low cost very well.

The system also has some robust protections built in (OVP, OCP, and OTP), which make the convertermore secure and reliable.The EMI filter at the front end of the circuit is designed to meet EN55032 class-B conducted emissionlevels. This filter is followed by an active boost PFC stage operating in CCM. This PFC stage regulatesthe DC bus voltage to 408 V, stabilized against line dropouts with a bulk storage capacitor. The isolatedpower stage of the charger is an LLC resonant converter operating very close to resonant frequency at a12-V output. The operation moves to above or below resonance according to the voltage and currentrequirements of the load. The output voltage feedback is achieved using the LM258 op amp circuit, whichhas integrated dual op amps. A TL431 device generates the required reference levels for the feedbackcircuitry. There is provision to alter the voltage references by means of a small external add-on card. The system is designed to meet below 480 mW of standby power when no load is connected. This is achievedusing a simple logic circuit that disables PFC and LLC power stages when load is not present.

The design uses a 20-W power supply board (TIDA-01503), which is designed to meet the auxiliary needsof a general power supply. The design supports an input voltage range from 100- to 425-V DC andprovides a 15-V DC (3.75-W) non-isolated outputs. In addition, a 15-V DC (3.75-W) and 5-V DC (12.5-W)isolated output is also provided to support isolated auxiliary power needs. The features of the powersupply board include easy pluggability, compact size, high efficiency, low no-load power consumption, and low cost.

The design deliveries high performances with low power consumption and a low bill of material (BOM)cost. Various parameters of the design like regulation, efficiency, EMI signature, output ripple, startup, andswitching stresses are tested and documented.

参考设计TIDA-01501主要特性:

• Wide Operating Input Range: 85- to 265-V AC WithFull Power Delivery Over Entire Range
• Leading Transient Performance With Half DutyCycle Response for Line Transient and DynamicLoad
• Peak Overall Efficiency of 93% at 230-V AC and91.8% at 115-V AC, Fan Cooling Needed up to55 ℃ Ambient Operation
• High Power Factor > 0.96 at 230-V AC From 50%to 100% Load Meets PFC Regulations and CurrentTHD as per IEC 61000-3-2 Class D
• Meets Requirements of Conducted EmissionsStandard: EN55032 Class B (CE)
• Single-Layer PCB Design to Achieve Low Cost

参考设计TIDA-01501应用:

• Gaming PCs
• Entry-Level Server PSUs
• Desktop PC PSUs
• Other Low-Cost AC/DC PSUs

图1.参考设计TIDA-01501外形图

图2.参考设计TIDA-01501框图
参考设计TIDA-01501主要指标:


图3.参考设计TIDA-01501电路图(1)

图4.参考设计TIDA-01501电路图(2)

图5.参考设计TIDA-01501电路图(3)
参考设计TIDA-01501材料清单:




图6.参考设计TIDA-01501 PCB设计图(1)

图7.参考设计TIDA-01501 PCB设计图(2)

图8.参考设计TIDA-01501 PCB设计图(3)

图9.参考设计TIDA-01501 PCB设计图(4)

图10.参考设计TIDA-01501 PCB设计图(5)

图11.参考设计TIDA-01501 PCB设计图(6)

图12.参考设计TIDA-01501 PCB设计图(7)

图13.参考设计TIDA-01501 PCB设计图(8)
详情请见:
http://www.ti.com/lit/ug/tidudh6/tidudh6.pdf
http://www.ti.com/lit/df/tidrt60/tidrt60.pdf
以及http://www.ti.com/lit/df/tidrt61/tidrt61.pdf
http://www.ti.com/lit/df/tidrt63/tidrt63.pdf
tidudh6.pdf
tidrt60.pdf
tidrt61.pdf
tidrt63.pdf

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