WMSIC Electronic Components

HGSEMI KA7500BM/TR KA7500BM

ModelKA7500BM/TR
PackageSOP-16
BrandHGSEMI
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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
HGSEMI KA7500BM / TR
Type
HGSEMI
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HGSEMI
Electronic Component
KA7500BM/TR
Electronic Component
1
Package
SOP-16
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.33g
Electronic Component
1
Synchronous
Electronic Component
Electronic Component
BM0227677196
Operating Temperature
40℃~+85℃
Operating Voltage
7V~35V
Switching Frequency
80Hz~300kHz
Output Current
500mA
Output Type
Electronic Component
Output Channel Count
2

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

KA7500BM/TR 产品概述

KA7500BM/TR 是华冠(HGSEMI)推出的一款高集成度 DC-DC 开关电源 PWM 控制芯片,采用 SOP-16 封装,适用于半桥与全桥拓扑的双通道驱动场合。器件工作电压范围宽(7V~35V),工作温度范围 -40℃~+85℃,静态电流仅 6.3mA,内部集成参考源、误差放大器、振荡器与 PWM 比较单元,输出为双通道可调 PWM,单通道驱动能力可达 500mA(峰值),适配中小功率变换器设计需求。

一、主要特性

  • 工作电压:7V ~ 35V,适应常见总线与电池供电系统。
  • 输出通道:双路独立 PWM 输出,可驱动半桥或全桥功率开关。
  • 开关频率:可调范围 80Hz ~ 300kHz,方便在效率与体积间取舍。
  • 同步整流:芯片不内置同步整流开关,需外置整流或 MOSFET。
  • 静态电流:Iq = 6.3mA,适合低待机功耗要求场合。
  • 输出能力:每路驱动峰值约 500mA,适配驱动小型功率 MOSFET。
  • 封装:SOP-16,/TR 表示带盘带卷装(Tape & Reel),便于贴片生产。
  • 工作温度:-40℃ ~ +85℃,满足工业级环境要求。

二、功能构成与引脚概述

芯片集成以下功能模块:参考电压源(用于误差放大器和基准)、双路误差放大器(用于反馈环路)、振荡器(RT/CT 外接设定频率)、死区/占空比限制、PWM 比较器/门控逻辑、双通道推挽/达林顿式驱动输出。引脚通常包含电源、地、参考输出、误差放大器输入/输出、振荡器 RT/CT、软启动(或斜坡/启动控制)、两路 PWM 输出等,用户可通过外接电阻/电容精确设置工作频率、软启动时间及闭环补偿参数。

三、电气与性能要点

  • 频率设定:通过外接 RT/CT 网络在 80Hz ~ 300kHz 范围内可靠工作。
  • 占空比与死区:器件提供占空比调节与死区控制手段,避免上/下桥导通冲突。
  • 参考源与放大器:内部参考稳定,误差放大器带宽与补偿点需根据输出电感/电容特性调校。
  • 驱动能力:输出适合直接驱动功率 MOSFET 的栅极,但在高开关速度或大负载电容时应考虑外接缓冲。
  • 效率考虑:由于不含同步整流,低压大电流场合建议采用外部低 Rds(on) MOSFET 或外加同步整流控制。

四、典型应用

  • 半桥/全桥 DC-DC 变换器(中小功率)
  • 开关电源(SMPS)主控芯片
  • 逆变器驱动(小功率)
  • 电池供电系统与电源模块开发

五、设计与布局建议

  • RT/CT 靠近芯片放置,并用低噪电容,减小布线寄生;频率敏感时使用金属膜/陶瓷电阻与低 ESR 电容。
  • 参考地与功率地分离,参考地紧靠芯片地端并经回路汇合到功率地,降低噪声对误差放大器的影响。
  • 输出端到 MOSFET 栅极的走线尽量短且加上合适栅阻,控制上升/下降沿以降低 EMI。
  • SOP-16 封装热设计:在 PCB 上为芯片周围留足铜面积,必要时在下层增加散热过孔以提升散热效率。
  • 若应用需要高效率低压输出,建议配合同步整流控制或外部同步 MOSFET。

六、使用注意事项

  • 芯片不含同步整流功能,若目标为高效率低压输出,请在拓扑设计中考虑外部同步整流方案。
  • 开关频率与占空比设置应保证死区时间足够以避免桥臂重合导通。
  • 软启动时间与补偿网络需综合考虑输入瞬态与输出滤波元件,避免开机冲击或振荡。
  • 在高温或高电压边界工作时,注意功率器件与 PCB 的热管理,确保长期可靠性。

七、封装与订购信息

  • 封装形式:SOP-16(表面贴装)
  • 订购型号示例:KA7500BM/TR(/TR 表示卷带包装,适用于自动贴片生产)
  • 推荐在设计初期与供应商确认材料与可供货性,并参考华冠数据手册获取详细引脚定义与典型应用电路。

以上为 KA7500BM/TR 的产品概述与选型与应用建议。实际设计时请结合完整数据手册参数和目标系统要求进行详细验证与测试。

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