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UCC38503 BiCMOS PFC/PWM 组合控制器

UCC38503
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) 0.2
Pin/Package 20PDIP, 20SOIC
Rating Catalog
UCC38503 描述

The UCC2850x family provides all of the control functions necessary for an active power-factor-corrected preregulator and a second-stage dc-to-dc converter. The controller achieves near-unity power factor by shaping the ac input line current waveform to correspond to the ac input-line voltage using average current-mode control. The dc-to-dc converter uses peak current-mode control to perform the step-down power conversion.

The PFC stage is leading-edge modulated while the second stage is trailing-edge synchronized to allow for minimum overlap between the boost and PWM switches. This reduces ripple current in the bulk-output capacitor.In order to operate with over three-to-one range of input-line voltages, a line feedforward (VFF) is used to keep input power constant with varying input voltage.

UCC38503 特性
UCC38503 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
UCC38503DW ACTIVE -40 to 85 3.55 | 1ku SOIC (DW) | 20 25 | TUBE UCC38503DW
UCC38503DWG4 ACTIVE -40 to 85 3.55 | 1ku SOIC (DW) | 20 25 | TUBE UCC38503DW
UCC38503N ACTIVE -40 to 85 3.55 | 1ku PDIP (N) | 20 20 | TUBE UCC38503N
UCC38503NG4 ACTIVE -40 to 85 3.55 | 1ku PDIP (N) | 20 20 | TUBE UCC38503N
UCC38503 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
UCC38503DW Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR   UCC38503DW
UCC38503DWG4 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR UCC38503DWG4 UCC38503DWG4
UCC38503N Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg Type   UCC38503N
UCC38503NG4 Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg Type UCC38503NG4 UCC38503NG4
UCC38503 应用技术支持与电子电路设计开发资源下载
  1. UCC38503 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)
UCC38503 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
UCC38503 评估模块 UCC38503EVM Texas Instruments 开发电路板/EVM
用于音频转换器的软件驱动程序 CODECDRIVERS-SW Texas Instruments 应用软件
UCC38503 参考设计
说明 型号 公司
BiCMOS PFC/PWM 组合控制器 UCC38500REF Texas Instruments