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XINLUDA XL2845
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- XINLUDA XL2845
- Type
- XINLUDA
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- XINLUDA
- Electronic Component
- XL2845
- Electronic Component
- 1
- Package
- SOP-8
- Electronic Component
- AC-DC Controllers and Regulators
- Electronic Component
- 0.332g
- Electronic Component
- 1
- Features
- (UVP)
- Electronic Component
- BM0226481632
- Electronic Component
- PWM
- Operating Temperature
- 25℃~+85℃
- Operating Voltage
- 12V~28V
- Switching Frequency
- 52kHz~65kHz
- Isolation
- Isolated
- Output Current
- 200mA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
XL2845 产品概述
一、概览
XL2845（信路达 XINLUDA）是一款面向低中功率电源的开关稳压控制器，封装为 SOP-8，集成欠压保护（UVP）等基础保护电路。器件支持反激（Flyback）拓扑并可用于升压/升降压类型的电源设计，适合单输出、小电流（约200mA）应用场景。
二、主要电气参数
- 输入电压范围：7.6V～30V（资料中亦给出典型工作电压 12V～28V），设计时请按最宽输入范围核算元件选型。
- 输出电流：典型可驱动约200mA负载，适合辅助电源和小功率模块。
- 最大占空比：50%，对升压或升降压的转换比有直接限制，设计时需保证所需输出在该占空比范围内可达成。
- 开关频率：资料中出现两组数值 —— 52kHz～65kHz（典型工作频段）与 500kHz（高频工作点）；两者分别对应不同工作模式或版本，实际设计请以样片测量或厂方最终规格为准。
- 同步整流：否（使用二极管整流），效率受到二极管正向损耗影响。
- 功耗耗散 Pd：800mW，需重视封装散热与布局。
- 工作温度：-25℃～+85℃，适用于一般工业级环境。
三、拓扑与性能要点
XL2845 以反激拓扑为主，可用于隔离或非隔离设计的单输出场合。最大占空比为50%意味着在升压或降压转换关系上存在上限，尤其在低输入高输出的场景需评估裕量。器件不支持同步整流，输出二极管的选择对效率和热耗有显著影响。开关频率的选择在效率、元件体积与电磁兼容之间权衡：低频（52–65kHz）利于降低开关损耗与EMI但磁性件尺寸较大；高频（如资料中的500kHz）可减小被动元件体积，但开关损耗与散热需求上升。
四、设计注意事项
- 热管理：Pd 800mW 在 SOP-8 封装下需要充分的 PCB 散热铜箔与过孔，尤其在接近85℃环境或满载时。
- 占空比限制：依据最大 D=50% 评估最大可达的输出电压范围与磁芯选型。
- 二极管选择：采用低正向压降的肖特基二极管可明显提升效率并减小发热。
- 欠压保护：利用 UVP 功能保证在输入欠压时安全关断，避免系统误动作或输出不稳定。
- EMI 与滤波：若采用高频工作点，需加强输入输出滤波与布局，严格控制走线回流与高 di/dt 节点的串扰。
五、典型应用
- 小功率隔离辅助电源、监控电源
- LED 驱动（低电流场合）
- 工业控制板的局部 DC-DC 变换器
- 汽车电子辅助电源（需注意更严苛的温度与瞬态规范）
六、结语
XL2845 适合对体积、成本有一定要求且输出电流不高的开关电源方案。选型与设计时应重点关注占空比限制、散热能力、二极管损耗及开关频率的权衡。由于资料中关于开关频率与输入电压有两套表述，建议在样机验证阶段与供应商确认最终参数并进行热、EMC 与效率的实测验证。
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