基于FAN6862设计的40W笔记本电脑电源技术
the fan6862 is designed for smps and integrates a frequency-hopping function that helps reduce emi emission of a power supply with minimum line filters.
the built-in synchronized slope compensation is proprietary sawtooth compensation for constant output power limit over universal ac input range. the gate output is clamped at 18v to protect the external mosfet from over-voltage damage.
other protection functions include vdd over-voltage protection and over-temperature protection. for overtemperature protection, an external ntc thermistor can be applied to sense the ambient temperature. when vdd ovp or otp is activated, an internal latch circuit latches off the controller.
fan6862主要特性：
low startup current: 8μa
low operating current in green mode: 3ma
peak-current mode operation with cycle-by-cycle current limiting
pwm frequency continuously decreasing with burst mode at light loads
vdd over-voltage protection (ovp)
constant output power limit (full ac input range)
internal latch circuit for ovp, otp
fixed pwm frequency (65khz) with frequency hopping
feedback open-loop protection with 56ms delay
soft start time: 4ms
400ma driving capability
fan6862应用：
general-purpose switch-mode power supplies and flyback power converters, including:
power adapters
open-frame smps
smps with surge-current output, such as for printers, scanners, and motor drivers
图1。fan6862方框图
图2。fan6862典型应用电路图
图3。fan6862起动电路图
图4。fan6862 36w（12v/3a）应用电路图
36w（12v/3a）应用电路材料清单（bom）：
采用fan6862的40w参考设计rd-337
40w参考设计主要特性：
low startup current: 8μa;
low operation current in green mode: 3ma
green mode: frequency reduction with burst mode at light load
fixed pwm frequency at 65khz with frequency hopping to reduce emi
constant output power limit
soft-start time: 4ms
driving capability: 400ma
various protection functions: vdd over-voltage protections (ovp), open-loop protection (olp), and over-temperature protection (otp)
图5。40w参考设计电路图
图6。40w参考设计变压器连接图
变压器电特性：
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基于FAN6862设计的40W笔记本电脑电源技术
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the built-in synchronized slope compensation is proprietary sawtooth compensation for constant output power limit over universal ac input range. the gate output is clamped at 18v to protect the external mosfet from over-voltage damage.
other protection functions include vdd over-voltage protection and over-temperature protection. for overtemperature protection, an external ntc thermistor can be applied to sense the ambient temperature. when vdd ovp or otp is activated, an internal latch circuit latches off the controller.
fan6862主要特性：
low startup current: 8μa
low operating current in green mode: 3ma
peak-current mode operation with cycle-by-cycle current limiting
pwm frequency continuously decreasing with burst mode at light loads
vdd over-voltage protection (ovp)
constant output power limit (full ac input range)
internal latch circuit for ovp, otp
fixed pwm frequency (65khz) with frequency hopping
feedback open-loop protection with 56ms delay
soft start time: 4ms
400ma driving capability
fan6862应用：
general-purpose switch-mode power supplies and flyback power converters, including:
power adapters
open-frame smps
smps with surge-current output, such as for printers, scanners, and motor drivers
图1。fan6862方框图
图2。fan6862典型应用电路图
图3。fan6862起动电路图
图4。fan6862 36w（12v/3a）应用电路图
36w（12v/3a）应用电路材料清单（bom）：
采用fan6862的40w参考设计rd-337
40w参考设计主要特性：
low startup current: 8μa;
low operation current in green mode: 3ma
green mode: frequency reduction with burst mode at light load
fixed pwm frequency at 65khz with frequency hopping to reduce emi
constant output power limit
soft-start time: 4ms
driving capability: 400ma
various protection functions: vdd over-voltage protections (ovp), open-loop protection (olp), and over-temperature protection (otp)
图5。40w参考设计电路图
图6。40w参考设计变压器连接图
变压器电特性：
ICCAD 2022，Imagination邀您共聚厦门！
BM34063A单片机控制电路包含DC-to-DC所需的主要功能转换器
详解机器学习分类算法KNN
低噪声动圈麦克风放大器电路
使用恒流恒压控制器件TSM101完成PFC开关电源电路的设计
基于FAN6862设计的40W笔记本电脑电源技术
LiDAR的技术前景,全球车用激光雷达市场细分
基于NXP产品的跳频无钥匙车辆门禁系统解决方案
采用PCTF技术降低微波/射频器件成本的封装方案
我们应该普及AI教育吗
矢量网络分析仪器简介
华硕GT-AC5300电竞路由器评测 配置信号确实讲究
城市级智慧停车解决方案实现线上线下全场景闭环功能
OPTIGA Trust X：为物联网安全保驾护
韩国固态硬盘销量惨淡 主要原因是SSD需求的成长性放缓
统一工艺和架构，赛灵思28纳米FPGA成就高性能和低功耗的完
中心化预言机在区块链智能合约中的意义是什么
Markforged携最新金属3D打印机惊喜亮相CES
智能电网现状如何 如何来改变这种现状？
人工智能生成技术的深度伪造技术的挑战