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Product Spec Banner
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RT7755GEK 系列专为搭配 RT7206 等控制器而设计，可提供完整的 USB PD（USB Power Delivery）或可程式化电源供应器（Programmable Power Adapter）解决方案。RT7755GEK 不仅具备高效率的电源控制架构，同时在 5V 待机模式下可将待机功耗控制于 50mW，以符合低待机功耗设计需求。 RT7755GEK 采用多项创新技术以支援宽范围输出电压应用，包括： (1) 利用 DMAG 脚位感测输出电压，调整控制回路增益以维持系统稳定性，同时调整输出过压保护（OVP）门槛值，以保护外部装置，并调整电流限制以符合限制功率来源（LPS，Limited Power Source）安全规范要求。 (2) 内建完整保护功能，包括大电容输入欠压启动/关机保护（Bulk-Capacitor Brown-In/Brown-Out Protection）、VDD 过压保护（VDD OVP）、输出过压/欠压保护（Output OVP/UVP）、同步整流器短路保护（SRSP，Secondary Rectifier Short-Circuit Protection）以及外部过温保护（External OTP）。 (3) 在定功率输出控制应用中，可透过于 CS 脚位外接电阻，实现全输入电压范围内的精准线路补偿（Line Compensation）。 (4) 提供多项保护机制，以防止次级侧元件（例如 RT7206 或分流稳压器）故障时对系统造成影响。 在实际应用中，建议 RT7755GEK 搭配次级控制器 RT7206 使用，以实现稳健且安全的电源设计，有效避免因不同装置、线材、插头及插座错误连接所导致的各种潜在故障状况。
RT7755GEK 电路图
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<div class="spec-list"><ul class="lv1"><li>Optimized for Adaptive Output Power <ul class="lv2"> <li></li><li>Wide VDD Range : 9V to 64V </li><li>Adaptive Output Over-Voltage Protection </li><li>Adaptive Over-Current Protection </li><li>Adaptive Loop Gain Control for Loop Stability </li></ul> </li><li>High Efficiency <ul class="lv2"> <li></li><li>Green Mode Operation at Light Load and No Load </li></ul> </li><li>Comprehensive Protection Features <ul class="lv2"> <li></li><li>Bulk-Capacitor Brown-In and Brown-Out Protection </li><li>VDD Over-Voltage Protection </li><li>Output Over-Voltage and Under-Voltage Protection </li><li>External Over-Temperature Protection </li><li>Secondary Rectifier Short-Circuit Protection </li><li>Programmable Line Compensation </li></ul> </li><li>Others <ul class="lv2"> <li></li><li>< 50mW in 5V Standby Mode for Power Saving </li><li>Driver Capability : 300mA/-300mA </li><li>SmartJitter<sup>TM</sup> Technology </li></ul> </li></ul></div>
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RT7755GEK 订购信息
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RT7755GEK
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RT7755GEK
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<div class="spec-list"><ul class="lv1"><li>USB PD and Programmable Power Adapters </li></ul></div>
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