LB11872H-MPB-E

The LB11872H-MPB-E is a 3-phase motor driver and controller from Mitsubishi Electric. It is recommended for motor applications such as fans and motorized doors, as well as controllers for mini equipment. This chip is ideal for applications where highly precise and programmable motors are required.

The LB11872H-MPB-E is an integrated Power Management IC (PMIC) that features a high frequency PWM (pulse-width modulation) circuit, an integrated MOSFET driver, and a slew rate limiter. The PWM circuit features programmable frequency and duty ratio outputs. The integrated MOSFET driver provides control of the MOSFET gate voltage. The slew rate limiter is a circuit that limits the current rise/fall times when switching the MOSFET.

The LB11872H-MPB-E application field includes motor-related applications such as cooling fans, water pumps, medical equipment, lawn mowers, industrial equipment, home appliance applications and automotive application. As well as motor applications, the LB11872H-MPB-E can be used for DC motor controls in home applications such as door and window motor systems, heating and air conditioning applications, and elevator systems.

In addition to its motor applications, the LB11872H-MPB-E can also be used as a general high-speed controller in mini equipment such as androids, drones and cameras. It features a comprehensive circuit block with PWM, MOSFET drivers, capacitor and resistor configurations.

The working principle of the LB11872H-MPB-E is based on the high-speed PWM and MOSFET gate driver circuits. The PWM circuit produces a pulse wave with a fixed frequency and width according to the duty rate set in the external control source. The MOSFET driver provides the control pulses to the MOSFET gates to switch the PWM wave. The slew rate limiter generates soft current rise/fall times between the PWM transitions, thus protecting the device from potential electromagnetic interference.

The LB11872H-MPB-E is a high performance motor driver and controller for a wide range of motor and controller applications. It features a high frequency PWM output, an integrated MOSFET driver and a slew rate limiter. It is suitable for applications in fields such as cooling fans, home equipment, industrial, automotive and mini equipment. It provides high speed control and stability with its advanced design features.