UCC2818A-Q1 汽车类 BiCMOS 功率因数前置稳压器

	UCC2818A-Q1
UVLO Thresholds On/Off(V)	10.5/10
Operating Supply(Max)(V)	18
Startup Current(mA)	0.15
Operating Supply Current(mA)	4
Vref(V)	7.5
Vref tol(%)	1.5
Duty Cycle(Max)(%)	100
Practical Operating Frequency(Max)(MHz)	0.25
Pin/Package	16SOIC
Rating	Automotive

UCC2818A-Q1 描述

The UCC2818A provides all the functions necessary for active power factor corrected preregulators. The controller achieves near unity power factor by shaping the ac input line current waveform to correspond to that of the ac input line voltage. Average current mode control maintains stable, low distortion sinusoidal line current.

Designed in Texas Instrument’s BiCMOS process, the UCC2818A offers new features such as lower start-up current, lower power dissipation, overvoltage protection, a shunt UVLO detect circuitry, a leading-edge modulation technique to reduce ripple current in the bulk capacitor and an improved, low-offset (±2 mV) current amplifier to reduce distortion at light load conditions.

The UCC2818A PFC controller is directly pin-for-pin compatible with the UCC2818 devices. Only the output stage of UCC2818A has been modified to allow use of a smaller external gate drive resistor values. For some power supply designs where an adequately high enough gate drive resistor can not be used, the UCC2818A offers a more robust output stage at the cost of increasing the internal gate resistances. The gate drive of the UC2818A, however, remains strong at ±1.2 A of peak current capability.

UCC2818A is intended for applications with a fixed supply (VCC). It is available in the 16-pin D package

UCC2818A-Q1 特性

• Qualified for Automotive Applications
• Controls Boost Preregulator to Near-Unity Power Factor
• Limits Line Distortion
• World-Wide Line Operation
• Overvoltage Protection
• Accurate Power Limiting
• Average Current Mode Control
• Improved Noise Immunity
• Improved Feed-Forward Line Regulation
• Leading Edge Modulation
• 150-uA Typical Start-Up Current
• Low-Power BiCMOS Operation
• 12-V to 17-V Operation
• Frequency Range of 6 kHz to 220 kHz

UCC2818A-Q1 芯片订购指南

器件	状态	温度 (oC)	价格（美元）	封装 | 引脚	封装数量 | 封装载体	丝印标记
UCC2818AQDRQ1	ACTIVE	-40 to 85	1.30 | 1ku	SOIC (D) | 16	2500 | LARGE T&R	2818AQ

UCC2818A-Q1 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
UCC2818AQDRQ1	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM		UCC2818AQDRQ1

UCC2818A-Q1 应用技术支持与电子电路设计开发资源下载

1. UCC2818A-Q1 数据资料 dataSheet 下载.PDF
2. TI 德州仪器AC/DC 和 DC/DC 电源产品选型与价格参考 . xls
3. Dual MOSFET Driver (PDF 498 KB)
4. 标准线性产品交叉参考 (Rev. D) (PDF 1058 KB)
5. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
6. 所选封装材料的热学和电学性质 (PDF 645 KB)
7. 高速数据转换 (PDF 1967 KB)
8. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
9. Analog-to-Digital Converter Grounding Practices Affect System Performance (PDF 56 KB)
10. Principles of Data Acquisition and Conversion (PDF 50 KB)
11. Interleaving Analog-to-Digital Converters (PDF 64 KB)
12. What Designers Should Know About Data Converter Drift (PDF 95 KB)
13. Giving Delta-Sigma Converters a Gain Boost with a Front End Analog Gain Stage (PDF 70 KB)
14. Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters (PDF 105 KB)

UCC2818A-Q1 工具与软件

名称	型号	公司	工具/软件类型
音频的快速搜索选择工具	AUDIO_SELECTION_TOOL	Texas Instruments	免费评估工具
用于音频转换器的软件驱动程序	CODECDRIVERS-SW	Texas Instruments	应用软件