LB11685V-MPB-H

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Part Status:	Obsolete
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LB11685V-MPB-H Application Field and Working Principle

IntroductionLB11685V-MPB-H is a Polymer P-channel MOSFET Bridge controller manufactured by ROHM Semiconductor. This device is a motor drivers, controllers, and power management chip designed to support the latest P-channel and N-channel MOSFETs.ApplicationLB11685V-MPB-H is suitable for use in a wide range of applications, including servo motors, stepper motors, in-vehicle systems, motors for various industrial and home appliances, as well as motor drivers for various small and medium wheeled vehicles such as robots and drones.It also supports components of various mobile devices and wearable devices, making it applicable for applications that require remarkably high efficiency and speed in energy consumption control.FeaturesThe key features of LB11685V-MPB-H include: high-speed, high-efficiency energy saving, fault detection, overtemperature protection and gate driver configuration, turbo power saving mode, overcurrent protection and short circuit protection, H bridge protection circuit, simple operation, external noise filter, low standby current, and wide operating temperature range.OD, CE, RA, and SV pins allow the number of power stages in an H bridge to be reduced, while the AP and OP pins can be used to sense a load (shunt) to prevent over-voltage and under-voltage.Working PrincipleThe LB11685V-MPB-H device operates on the principle of conventional MOSFET Bridge controller. P-Channel Mosfets are arranged in the form of an H-bridge. P-Channel Mosfets are used as the main switches in this configuration. They work with Gate Driver, which is an integrated block in the device. In operation, each MOSFET channel controls the current flowing through its respective motor winding. For each channel, the gate voltage controls the source voltage, which controls the current flow. When the motor is controlled, the output voltage of the power supply is used to apply the required level of current to the motor. The Gate Driver block takes the input from the inputs and generates the appropriate Gate Voltages which are used to control the flow of current in the motor windings.In addition to controlling the current, the LB11685V-MPB-H also provides fault detection and overcurrent protection. The overcurrent detection circuit detects the presence of a current spike in the circuit and triggers a fault detection alert. This alert is then sent to the host processor, which can take some corrective action if necessary. Additionally, the device also provides an overtemperature protection feature, which is essential for protecting the system’s components against heat damage.ConclusionLB11685V-MPB-H is a highly advanced motor drivers, controllers, and power management chip designed to provide superior performance in a wide range of applications. It features robust gate driver configuration, fault detection, overtemperature protection, and overcurrent protection features, making it an excellent choice for motor control applications that require high efficiency and speed in energy consumption control.

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