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Silergy SYV939CQFC
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- silergy SYV939CQFC
- Type
- SILERGY
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- SILERGY
- Electronic Component
- SYV939CQFC
- Electronic Component
- 1
- Package
- QFN4x4-32
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 1g
- Electronic Component
- 1
- Features
- Built-in LDORegulator
- Type
- Electronic Component
- Synchronous
- Electronic Component
- Electronic Component
- BM0265092083
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 4V~28V
- Switching Frequency
- 500kHz；250kHz
- 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.
SYV939CQFC 产品概述
一、产品简介
SYV939CQFC 是矽力杰（silergy）推出的一款升降压型（降压-升压式）单通道 DC-DC 电源管理芯片，封装为 QFN4x4-32（QFN-32，4 mm × 4 mm）。器件内部集成功率开关管，采用同步整流结构，支持可调输出，适用于输入电压范围宽（4V–28V）的供电场景，可在输入高于或低于目标输出电压时稳定工作，适配多种电源拓扑需求。
二、主要特性
- 工作电压：4V 至 28V 宽输入范围，适应电池、车载及适配器输入。
- 开关频率：支持 500 kHz 与 250 kHz 两档切换，设计灵活，利于在尺寸、效率与电磁兼容之间平衡。
- 拓扑：降压-升压式（Buck-Boost），单通道可调输出。
- 开关管：内部集成高效功率开关，支持同步整流以降低导通损耗。
- 工作温度：-40℃ 至 +85℃，覆盖常见的工业级与车载边界环境。
三、功能与保护
- 内置 LDO 稳压器：为控制电路或外部低压芯片提供稳定参考电压，简化系统供电结构。
- 逐波限流（Peak-by-Peak）：对每个开关周期实现峰值电流限制，保护开关管与绕组不被突发电流损坏。
- 可调限流：通过外部设置实现限流门槛调节，便于针对负载与保护策略优化设计。
- 过流保护与打嗝限流（Hiccup）：短路或持续过流时进入打嗝限流模式，降低热应力并便于自动恢复，提升系统可靠性。
四、封装与热性能
QFN4x4-32 小尺寸封装利于高密度布局，内部集成开关器件降低外部组件数量。封装需配合良好的 PCB 散热设计（底部热墩、充足铜面积与散热层）以保证在高功率工况下的热稳定性。
五、应用建议与典型应用
SYV939CQFC 适合用于便携设备、工业控制、车载电子（非严苛车规级环境需参考具体认证）、通信及其他需要宽输入范围、可调输出的电源系统。设计时应注意：
- 根据开关频率选择合适的电感与电容以兼顾纹波、电效率和体积；
- 布局上将开关节点走线最短、靠近器件封装，确保回流路径紧凑以降低 EMI；
- 为实现可调限流与保护逻辑，合理选择限流设定元件并预留调试接口。
总结：SYV939CQFC 以宽输入、升降压能力与多重保护为特点，适合空间受限且需兼顾可靠性的电源设计，是需要单芯片解法的升降压应用中的优选方案。若需电路实例或参考设计手册，可进一步提供负载、输出电压与散热条件以便给出更具体的建议。
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