WMSIC Electronic Components

WCH CH221K

ModelCH221K
PackageSOT-23-6
BrandWCH
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
WCH CH221K
Type
WCH
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
PD 3.0
Electronic Component
WCH
Electronic Component
CH221K
Electronic Component
1
Package
SOT-23-6
Type
Controller
Electronic Component
Fast-Charge Protocol IC
Electronic Component
0.044g
Electronic Component
1
Features
Electronic Component
Electronic Component
BM0230826889
Operating Temperature
40℃~+105℃
Output Power
100W
Output Voltage
5V;20V;15V;12V;9V
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.

CH221K 产品概述

CH221K 是南京沁恒(WCH)推出的一款高集成度受电控制器(充电控制用 IC),专为便携电源、PD/QC 快充接收端与智能充电设备设计。芯片在小封装下实现高达 100W 的输出能力,并支持常见的多档输出电压,适配各类快充协议与设备需求。

一、核心规格与功能概述

  • 类型:受电控制器(充电控制用 IC)
  • 输出功率:100W(最大)
  • 支持输出电压:5V、9V、12V、15V、20V(多档输出)
  • 工作温度:-40℃ ~ +105℃
  • 封装:SOT-23-6
  • 品牌:WCH(南京沁恒)

二、主要特性

  • 多档电压输出,满足 5/9/12/15/20V 常用快充档位,可用于 PD/QC 等协议接收端的电压切换和稳压控制。
  • 高功率承载能力:单芯片支持最高 100W 输出,适合大功率移动电源、车充等应用场景。
  • 宽温度范围:-40℃ 至 +105℃,适用于工业级与消费级混合环境。
  • 小型化封装:SOT-23-6,便于空间受限的产品设计与量产装配。
  • 集成功能:常见的保护与控制回路(OVP、OCP、OTP、UVLO)与电压/电流管理,简化外部元件。

三、保护与可靠性设计

  • 过压保护(OVP):防止输出电压异常升高对负载造成损害。
  • 过流/短路保护(OCP/SC):快速限制或切断输出,保护器件及外部电路。
  • 热关断(OTP):在芯片温度过高时进入保护状态,降低损伤风险。
  • 欠压锁定(UVLO):确保在输入电压不足时不工作,避免不稳定输出。

四、典型应用场景

  • 移动电源(Power Bank)接收端(支持高功率快速充电)
  • USB PD / QC 协议接收模块
  • 笔记本/平板充电器的智能受电模块
  • 车载充电设备与便携式充电站
  • 工业移动终端、便携式医疗设备等需要多档稳压的场合

五、封装与选型建议

  • 封装形式:SOT-23-6,适合回流焊工艺与自动贴片。
  • 选型建议:根据系统最大输出电流与散热条件选择合适的外围功率器件(MOSFET、感性元件、散热方案)。在高功率应用中注意 PCB 散热、热阻和铜箔面积的优化。

六、设计注意事项

  • 输入/输出路径应尽量缩短并增大铜厚,降低功率损耗与热积聚。
  • 在高功率运行时建议做热仿真,必要时增加散热方案(散热片、加强铜箔、导热垫等)。
  • 配合制造商推荐的外围元件(MOSFET、二极管、电容、电感)可获得最佳性能与可靠性。
  • 做好 EMI/EMC 抑制设计,增加必要的滤波与磁屏蔽,避免干扰影响充电协商与稳压控制。

七、技术支持与资料

南京沁恒(WCH)提供器件选型手册、原理图参考、典型应用电路及封装资料。建议在产品导入阶段与供应商技术支持沟通,获取最新的规格书(Datasheet)、焊接与布局建议,以及量产测试参考。

CH221K 以其多档输出、高功率能力与工业级工作温度,适合需要可靠快充接收与紧凑封装的各类充电设备应用。通过合理的 PCB 布局与热管理,可在各种复杂环境中实现稳定、高效的充电控制解决方案。

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