高效率升压转换器提供24V的终端-High-Efficien
data terminal equipment (dte), such as wireless lan and wireless local loop, may require data and power on the same cable. a high voltage power source of 24v is required to reduce the voltage drop in the cable.
isolation is provided by the 12v power-supply. for a system with one or two ports, a custom-designed dc-dc converter is more suitable than power modules, or bricks, since bricks tend to be bulkier and are more expensive. they are more suitable for systems that support more ports, where the power demand is higher.
the max668 is an excellent choice for the design of a dc-dc step-up converter. the max668, a current-mode controller, operates in the pwm mode at medium and heavy loads, providing high-efficiency and low-noise. with power levels greater than 20w, efficiencies of more than 90% are achievable.
figure 1.
the circuit of figure 2 has a 24v output and can deliver current up to 3 amperes, enough to power a system with two ports. a switching frequency of 500khz was chosen as a compromise between switching loss and the size of inductor l1. increasing the value of gate resistance r7 will reduce emi noise, but increase switching loss. a value of 4.7ω was chosen as a compromise. at an input voltage of 12v, a full load of 3 amperes and an output of 24v, the conversion efficiency was 93%.
figure 2.
华为反封闭姿态的弦外之音
一种具有屏蔽电磁干扰特性的柔性电容式力传感器
2.4GHz超低功耗有源RFID标签系统SoC单芯片——Si24R2E
成都市政府再次出台集成电路支持新政 成都集成电路产业将迎新一轮起飞
未来将近！全球第一辆全尺寸无人公交车上路测试
高效率升压转换器提供24V的终端-High-Efficien
出国旅游语言不通怎么办？快来试一试T20智能同步语音翻译机
英特尔发布首款采用DG1 GPU的Iris Xe独立显卡
华为Mate10什么时候上市？华为Mate10最新消息，华为Mate10配置、价格、外形、拍照全曝光！
松下将改组为控股公司制 下设车载电池等8家业务公司
智慧灯杆是推动物联网新型基础设施的最佳切入点
SPICE中的PDN阻抗仿真设计
贸泽电子参展慕尼黑 体验设计开发新主张
基于毫米波的人员监测雷达人数统计技术应用
NVIDIA显卡开启DLSS功能后效果到底怎么样
Mobileye警告Q1客户订单大幅下滑 引发股价暴跌25%
中国移动正在推动TDD成为国际主流标准
小米黑科技曝光：小米6将配备自研极速充电
5G愿景虽好但现在仍只是嘘头
能表明来客身份的门铃电路(四声火车声发声电路KD56024)
isolation is provided by the 12v power-supply. for a system with one or two ports, a custom-designed dc-dc converter is more suitable than power modules, or bricks, since bricks tend to be bulkier and are more expensive. they are more suitable for systems that support more ports, where the power demand is higher.
the max668 is an excellent choice for the design of a dc-dc step-up converter. the max668, a current-mode controller, operates in the pwm mode at medium and heavy loads, providing high-efficiency and low-noise. with power levels greater than 20w, efficiencies of more than 90% are achievable.
figure 1.
the circuit of figure 2 has a 24v output and can deliver current up to 3 amperes, enough to power a system with two ports. a switching frequency of 500khz was chosen as a compromise between switching loss and the size of inductor l1. increasing the value of gate resistance r7 will reduce emi noise, but increase switching loss. a value of 4.7ω was chosen as a compromise. at an input voltage of 12v, a full load of 3 amperes and an output of 24v, the conversion efficiency was 93%.
figure 2.
华为反封闭姿态的弦外之音
一种具有屏蔽电磁干扰特性的柔性电容式力传感器
2.4GHz超低功耗有源RFID标签系统SoC单芯片——Si24R2E
成都市政府再次出台集成电路支持新政 成都集成电路产业将迎新一轮起飞
未来将近！全球第一辆全尺寸无人公交车上路测试
高效率升压转换器提供24V的终端-High-Efficien
出国旅游语言不通怎么办？快来试一试T20智能同步语音翻译机
英特尔发布首款采用DG1 GPU的Iris Xe独立显卡
华为Mate10什么时候上市？华为Mate10最新消息，华为Mate10配置、价格、外形、拍照全曝光！
松下将改组为控股公司制 下设车载电池等8家业务公司
智慧灯杆是推动物联网新型基础设施的最佳切入点
SPICE中的PDN阻抗仿真设计
贸泽电子参展慕尼黑 体验设计开发新主张
基于毫米波的人员监测雷达人数统计技术应用
NVIDIA显卡开启DLSS功能后效果到底怎么样
Mobileye警告Q1客户订单大幅下滑 引发股价暴跌25%
中国移动正在推动TDD成为国际主流标准
小米黑科技曝光：小米6将配备自研极速充电
5G愿景虽好但现在仍只是嘘头
能表明来客身份的门铃电路(四声火车声发声电路KD56024)