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On-Bright OB2576ATCPA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- On-Bright OB2576ATCPA
- Type
- ON-BRIGHT
- Minimum package
- 4000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ON-BRIGHT
- Electronic Component
- OB2576ATCPA
- Electronic Component
- 1
- Package
- SOP-8
- Electronic Component
- AC-DC Controllers and Regulators
- Electronic Component
- 0.198g
- Electronic Component
- 1
- Features
- (CV); (UVP); (OTP); (CC); (SCP); (OVP); (OCP)
- Electronic Component
- Electronic Component
- Electronic Component
- BM0264989525
- Electronic Component
- PFM; QR
- Operating Temperature
- 20℃~+85℃
- Operating Voltage
- 9V~31V
- Switching Frequency
- 300Hz~80kHz
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
OB2576ATCPA 产品概述
一、概述
OB2576ATCPA 是昂宝（On-Bright）推出的一款面向隔离型反激开关电源的高集成控制器，封装为 SOP-8。器件内置耐压达 620V 的开关晶体管，支持原边反馈（无需光耦）实现恒压（CV）和恒流（CC）输出控制，适用于成本与体积受限的离线适配器、小功率充电器及通用隔离电源设计。
二、主要特性
- 隔离反激拓扑，原边反馈控制，简化次级电路与光耦件。
- 工作电压：9V～31V（控制与辅助供电范围）。
- 开关频率范围：300Hz～80kHz（支持负载与条件变化）。
- 开关类型：PFM 调制，具备准谐振（QR）工作模式以降低开关损耗与 EMI。
- 内置耐压晶体管：620V，适应离线高压工况。
- 封装：SOP-8，便于自动贴装与散热设计。
三、保护与功能
器件集成完整的保护与工作特性，提升系统可靠性：
- 恒压模式（CV）与恒流模式（CC），支持充电与稳压场景切换。
- 欠压保护（UVP）、过压保护（OVP）、过流保护（OCP）、短路保护（SCP）。
- 过热保护（OTP），工作温度范围 -20℃～+85℃。
- PFM 调制有助于轻载效率优化，QR 模式可减少开关应力与电磁干扰。
四、典型应用
- 小功率隔离式电源（5W～30W 区间，根据变压器与散热设计）。
- 手机、平板及便携设备充电适配器（需恒流/恒压特性）。
- 家用电器的辅助电源与工业控制小功率隔离模块。
五、设计注意事项
- 变压器设计需满足隔离要求并预留适当的磁通余量，考虑准谐振工作点和最大输入电压下的峰值应力。
- 虽为原边反馈方案，次级仍需合理选择基准与辅助绕组参数以实现稳定的 CV/CC 环路。
- 对开关电流的钳位（RCD 钳位或有源钳位）与散热设计应确保在最大负载和高温情况下器件安全运行。
- PCB 布局应尽量缩短高电压开关回路，注意绕线、接地与 EMI 抑制。推荐参考厂商评估板与典型应用电路。
六、封装与资料
- 封装形式：SOP-8。适合自动化生产与通用电路板布局。
- 设计前请参照官方数据手册获取精确引脚定义、典型曲线、参考电路及测试条件，以确保可靠实现 CV/CC 与各项保护功能。
总结：OB2576ATCPA 以高压开关集成、原边反馈与多重保护为特色，适合追求低成本、体积小且需隔离输出的反激电源方案。在变压器设计、钳位与热管理上做好预留，可在消费类与工业小功率隔离电源中发挥良好的性能与可靠性。
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