FS266风扇霍尔驱动芯片

霍尔开关MH188电机马达驱动芯片

MH188Specifications Ultra High Sensitivity Hall Effect Latch MH188 Hall-effect sensor is a temperature stable, stress-resistant sensor. Superior high-temperature performance is made possible through a dynamic offset cancellation that utilizes chopper-stabilization. This method reduces the offset voltage normally caused by device over molding, temperature dependencies, and thermal stress. MH188 includes the following on a single silicon chip: voltage regulator, Hall voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, Advanced DMOS wafer fabrication processing is used to take advantage of low-voltage requirements, component matching, very low input-offset errors, and small component geometries. This device requires the presence of both south and north polarity magnetic fields for operation. In the presence of a south polarity field of sufficient strength, the device output sensor on, and only switches off when a north polarity field of sufficient strength is present. MH188 is rated for operation between the ambient temperatures –40℃and 85℃for the E temperature range, and –40℃to 125℃for the K temperature range. The two package styles available provide magnetically optimized solutions for most applications. Package SO is an SOT-23, a miniature low-profile surface-mount package, while package UA is a three-lead ultra mini SIP for through-hole mounting. Packages is Halogen Free standard and which have been verified by third party lab. Features and Benefits ●DMOS Hall IC Technology. ●Reverse bias protection on power supply pin. ●Chopper stabilized amplifier stage. ●Optimized for BLDC motor applications. ●Reliable and low shifting on high Temp condition. ●Good ESD Protection. ●100% tested at 125 ℃ for K. ●Custom sensitivity / Temp erature selection are available. Applications ●High temperature Fan motor ● 3 phase BLDC motor application ●Speed sensing ●Position sensing ●Current sensing ●Revolution counting ●Solid-State Switch ●Linear Position Detection ●Angular Position Detection ●Proximity Detection ●High ESD Capability

电机驱动芯片资料全

A4954 双路全桥式DMOS PWM 电动机驱动器特点 ?低R DS(on)输出 ?过电流保护(OCP) 电动机短路保护 o o电动机引脚接地短路保护 o电动机引脚电池短路保护 ?低功耗待机模式 ?可调PWM 电流限制 ?同步整流 ?部欠压锁定(UVLO) ?交叉电流保护描述通过脉宽调制(PWM) 控制两个直流电动机，A4954 能够承受峰值输出电流达±2 安培，并使电压达到40 伏特。输入端通过应用外部PWM 控制信号以控制直流电动机的速度与方向。部同步整流控制电路用来降低脉宽调制(PWM) 操作时的功率消耗。部电路保护包括过电流保护、电动机接地或电源短路、因滞后引起的过热关机、V BB欠压监视以及交叉电流保护。 A4954 采用带有外置散热板的16 引脚TSSOP 小型封装（后缀LP）。该封装为无铅封装，且引脚框采用100% 雾锡电镀。 ?功能方框图

A4950 全桥式DMOS PWM 电动机驱动器特点 ?低R DS(开)输出 ?过电流保护(OCP) o电动机短路保护 o电动机引脚接地短路保护 o电动机引脚电池短路保护 ?低功耗待机模式 ?可调PWM 电流限制 ?同步整流 ?部欠压锁定(UVLO) ?交叉电流保护

描述通过脉宽调制(PWM) 控制直流电动机，A4950 能够提供±3.5 安培的峰值输出电流，工作电压为40 伏特。该产品可提供输入端子，通过外部施加的PWM 控制信号控制直流电动机的速度与方向。采用部同步整流控制电路降低脉宽调制(PWM) 操作时的功率消耗。部电路保护包括过电流保护、电动机引脚接地短路或电源短路、带时延的过热关机、V BB欠压监视以及交叉电流保护。 A4950 采用带有外露散热板的8 引脚SOICN 小型封装（后缀LJ）。该封装为无铅封装，且引脚框采用100% 雾锡电镀。 ? 功能方框图 A4938 三相无刷直流电动机预驱动器功能及优点 ?驱动6 N-通道MOSFET ?同步整流，减少功率耗散

JY01A无刷电机驱动IC

直流无刷电机驱动IC 版本号：V1.0 日期：2013年5月28日

一.特色：三.封装形态二.简介： ● 军工品质，工作稳定 ● 用于有霍尔/无霍尔无刷电机驱动 ● 正/反转控制，软切换功能 ● 转速线性调节 ● 过流保护 ● 短路保护 ● 欠压保护 ● DSP 核H_PWM 驱动低噪音 ● JYKJ 特有技术，保证了在任何工况下电机都能正常运转 ● 有霍尔与无霍尔应用自动识别功能 ● 外围电路简单，使用方便 JY01A 是一款多功能的无刷电机驱动IC ，可用于有霍尔、无霍尔无刷电机驱动。具备调速，正反转，过流保护，短路保护，欠压保护等功能，军工级品质，工作稳定，防干扰能力强等特点。

四.电气特性：（一）绝对最大额定值 V DD………………………………………………………………………………相对于GND+5.5V 所有输入电压…………………………………………………………GND-0.5V—VDD+0.5V 所有吸入输出电流………………………………………………………… IOL/8mA，IOH/5mA 工作温度…………………………………………………………………………………-40℃~85℃储存温度…………………………………………………………………………………-50℃~125℃ （二）直流特性符号符号描述最小值典型值最大值单位条件 V DD电源 4.55 5.5V正常工作环境下 V IL 输入IO低电平00.3V TTL电平 V IH 输入IO高电平35 5.5V TTL电平 IOL低电平吸入电流58mA TTL电平 IOH高电平输出电流35mA TTL电平 Vjd模拟输入电平05V模拟输入电平范围 Ijd模拟输入电流100nA模拟输入电流值

驱动霍尔元件US79说明书

Features and Benefits ? Built-in Reverse Voltage Protection ? Built-in RFI Filter ? Power Efficient CMOS and Power MOSFET Drivers allow 400mA without overheating ? Built-in Zener Diodes Protect Outputs ? Eliminate all Fan Components ? Eliminate PC Board ? 5V and 12V Operation ? High Sensitivity for switching symmetry ? Locked Rotor Shutdown Applications ? Fan sizes up to 90mm ? Current range up to 400mA Ordering Information Part No. Temperature Suffix Package Code US79 K (-40°C to 125°C) UA (TO-92 flat) 1. Functional Diagram 2. Description The US79KUA is the most advanced Smart Fan Control Hall IC. It is designed for 5V and 12V cooling commutation. The chip contains many features to allow survival in a harsh environment. The IC was designed to eliminate all discrete components such as capacitors, resistors, transistors, diodes, PC board and associated labor, replacing US$0.25 to US$0.35 in direct cost. The K rating guarantees proper operation up to an ambient temperature of 125°C. Hall IC circuitry and power FET output provide a low power dissipation cool chip. Locked Rotor conditions are detected by the IC when there is no motion for one second and will shut off the motor drive for five seconds. Then, the IC will turn on the drive current for one second. This sequence continues indefinitely until the locked rotor condition is fixed. This feature prevents overheating.

霍尔FS276T电机驱动IC

Complementary Output Hall Effect Latch The MH276T is an integrated Latching Hall effect sensor with output drivers, mainly designed for electronic commutation of brushless DC fans. This IC includes an on chip voltage regulator, reverse battery Diode, Hall plate, amplifier, comparator, and a pair of complementary open-collector outputs (D O, D O B). It provides a one-chip solution for driving two-coil brushless DC cooling fans. A novel V CC recovery circuit allows the complete two-wire fan control circuit to fit in a small four pin PB free package. While the magnetic flux density (B) is larger than the operate point (B OP), DO will turn on (low), and meanwhile D O B will turn off (high). Each output is latched until B is lower than the release point (B RP), and then D O and D O B will change state. For a DC fan application, it is sometimes necessary to test the reversed power connection condition. The internal protection diode only protects the chip side and not the coil side. If it is necessary to protect the coil side then add one external diode to the application circuit to block the reverse current from the coil-side. See application circuit example on page 3. Features and Benefits ●On-chip Hall sensor with two different sensitivity and hysteresis settings ● 3.5V to 20V operating voltage ●400mA (avg.) output sink current ●Built-in protecting diode only for chip reverse power connecting ●-20° to +85°C operating temperature ●Thermal Shut-Down Function ●Short Protection Function(For 3.5V to 14V) ●Low cost and high sensitivity Hall Sensor Applications ●Position Sensing ●Dual-coil Brush-less DC Motor ●Dual-coil Brush-less DC Fan ●Revolution Counting ●Speed Measurement Functional Diagram

TC686 双线圈大电流霍尔驱动芯片规格书

TC68TC686 Two-Coil Fan Driver Data Sheet Rev. 1.1 1. General Descriptions 6 is an output driver for two-coil BLDC fan or motor and a Hall sensor is integrated in. Beside the magnetic sensor, the device includes an amplifier that amplifies the Hall voltage, a Schmitt trigger to provide switching hysteresis, two complementary open-drain drivers. It also includes an over-temp protector and chopper modulator which enhances the magnetic performance. Placing the device in a variable magnetic field, if the magnetic flux density is larger than Bop, pin DO will be turned on (low) and pin DOB will be turned off (high). This output state is held until the magnetic flux density reverses and falls below Brp, then causes DO to be turned off (high) and DOB to be turned on (low). Features □ On Chip Hall Sensor □3.5~28V Supply Voltage □ 1.5mA Operating Current □ 500mA(Average) Output Sink Current □ Embedded Clamp Diodes at Outputs □ Ambient Temp Range:-40C~85C □ Embedded Over-Temp Protector □ TO-94 (SIP-4L) Package Typical Applications □ BLDC Fan □ BLDC Motor □ Revolution Counting □ Speed Measurement Package □TO94

求大功率直流电机驱动芯片

浏览次数：4754次悬赏分：10 |提问时间：2007-2-3 20:49 |提问者：308555123 |检举平均工作电流5A或者以上，电压24v,要求简单有没有这种芯片？推荐答案 Micro Lin ear公司生产的ML4428无刷直流电机无传感器PWM智能控制器的内部结构，它是无位置传感器无刷直流电动机控制的简易方法，该控制器内部的反电势电路、起动及换向逻辑电路、限流比较器和保护电路简化了无位置传感器无刷直流电动机的控制，做到单独控制的正反向运行，起动时无反转，采用PWM 控制或最小噪声的线性控制，可获得最咼效率。关键词：无刷直流电动机；位置传感器；反电势检测电路 1引言无刷直流电机具有体积小、重量轻、维护方便、高效节能、易于控制等一系列优点，被广泛应用于各个领域。传统的无刷直流电机大多以霍尔元件或其它位置检测元件作位置传感器，但位置传感器维修困难，且霍尔元件的温度特性不好，导致系统可靠性变差。因此，无位置传感器无刷直流电机成为理想选择，并具有广阔的发展前景，但它的控制电路相当复杂。ML4428控制芯片的出现，简化了控制电路的设计，该芯片内部含有反电势检测电路、起动换向逻辑电路和保护电路，使控制器芯片只需外接少量的阻容元件就可以实现对直流无刷电动机的控制。 2 ML4428原理图及功能实现 ML4428电机控制器不用霍尔传感器就可为丫形无刷直流电机（BLDC）提供起动和调速所需的各种功能。它采用28脚双列表面SOIC封装，它的内部框图如图1所示〔1〕，ML4428使用锁相环技术，从电机线圈检测反电势，确定换向次序；采用专门的反电势检测技术，可实现三相无刷直流换向且不受PWM噪声及电机缓冲电路的影响；采用了检查转子位置并准确对电机加速的起动技术，确保起动时电机不会反转并可缩短起动时间。 2.1反电势检测信号的获得

电机驱动芯片资料

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A4954 双路全桥式DMOS PWM 电动机驱动器特点 ?低R DS(on)输出 ?过电流保护(OCP) 电动机短路保护 o o电动机引脚接地短路保护 o电动机引脚电池短路保护 ?低功耗待机模式 ?可调PWM 电流限制 ?同步整流 ?内部欠压锁定(UVLO) ?交叉电流保护描述通过脉宽调制(PWM) 控制两个直流电动机，A4954 能够承受峰值输出电流达±2 安培，并使电压达到40 伏特。输入端通过应用外部PWM 控制信号以控制直流电动机的速度与方向。内部同步整流控制电路用来降低脉宽调制(PWM) 操作时的功率消耗。内部电路保护包括过电流保护、电动机接地或电源短路、因滞后引起的过热关机、V BB欠压监视以及交叉电流保护。 A4954 采用带有外置散热板的16 引脚TSSOP 小型封装（后缀LP）。该封装为无铅封装，且引脚框采用100% 雾锡电镀。 ?功能方框图

A4950 全桥式DMOS PWM 电动机驱动器特点 ?低R DS(开)输出 ?过电流保护(OCP) o电动机短路保护 o电动机引脚接地短路保护 o电动机引脚电池短路保护 ?低功耗待机模式 ?可调PWM 电流限制 ?同步整流 ?内部欠压锁定(UVLO) ?交叉电流保护

描述通过脉宽调制(PWM) 控制直流电动机，A4950 能够提供±3.5 安培的峰值输出电流，工作电压为40 伏特。该产品可提供输入端子，通过外部施加的PWM 控制信号控制直流电动机的速度与方向。采用内部同步整流控制电路降低脉宽调制(PWM) 操作时的功率消耗。内部电路保护包括过电流保护、电动机引脚接地短路或电源短路、带时延的过热关机、V BB欠压监视以及交叉电流保护。 A4950 采用带有外露散热板的8 引脚SOICN 小型封装（后缀LJ）。该封装为无铅封装，且引脚框采用100% 雾锡电镀。 ? 功能方框图 A4938 三相无刷直流电动机预驱动器功能及优点 ?驱动6 N-通道MOSFET ?同步整流，减少功率耗散

EG276 两相无刷电机驱动芯片

ELECTRONIC GIANT EG276芯片用户手册二相无刷风扇霍尔驱动芯片

版本变更记录

目录 1. 特点 (4) 2. 描述 (4) 3. 应用领域 (4) 4. 引脚 (5) 4.1. 引脚定义 (5) 4.2. 引脚描述 (5) 5. 结构框图 (6) 6. 典型应用电路 (6) 7. 电气特性 (7) 7.1 极限参数 (7) 7.2 典型参数 (7) 7.3 测试电路 (8) 7.4 磁电参数 (8) 7.5 磁场方向工作参数 (10) 8. 封装尺寸 (11)

EG276芯片用户手册V1.0 1. 特点 ?单片集成，体积小，可靠性高 ?较宽的电压工作范围:3.5V至20V ?内置霍尔传感器 ?400mA平均电流输出能力 ?集电极开路，互补输出 ?内置电压反转保护二极管 ?采用较小的TO-94封装 2. 描述 EG276集成了霍尔传感器和集电极开路互补输出驱动器，主要用于电子转换的二相无刷直流风扇。芯片内部集成了霍尔感应器、基准电压、前置放大器、施密特比较器以及互补集电极开路输出（DO、DOB）。在直流风扇应用中，有时会发生电源接反的情况，EG276内置了一个反接保护二极管，该反接保护二极管只能给芯片提供保护而不能给线圈提供保护。如有必要，线圈可外接一个二极管，在电源反接的时候给线圈提供保护。当磁通密度（B）大于工作电(Bop)，DO开启输出低电平，同时DOB关闭输出高电平。两个输出管脚的状态会一直保持到B低于释放点（Brp）,这时DO、DOB改变各自的输出状态。 3. 应用领域 ?双线圈无刷直流风扇?回转计数器?双线圈无刷直流电机?速度测量