描述 Description

The LV88551JA/R is the pre-driver for a single-phase BLDC motor, which has the closed loop controller for motor rotation speed. This is available to control a motor with low vibration and the low noise. In addition, lead-angle adjustment is possible by external pins. Lead-angle value and lead-angle slant can be adjusted independently. Thus, the device can be driven by high efficiency and low noise with various motors. Motor speed setting curve is adjustable for many variety using external resistor only. As a method of the rotary speed control of the motor, direct-PWM pulse input.

特性 Features

? Single-phase full wave drive pre-driver include closed loop speed control
? high accuracy for motorspeed control
? Speed control function by PWM duty input (25 Hz to 100 kHz)
? wide operation range
? Soft start-up function and PWM soft switching phase transition
? low noise and silent drive
? Soft PWM duty cycle transitions
? low noise and silent drive
? Built-in current limit circuit and thermal protection circuit
? safety
? Built-in locked rotor protection and auto recovery circuit
? safety
? FG signal output
? easy to motor control
? Dynamic lead angle adjustment with respect to rotational speed
? high efficiency
? Lead-angle control parameters can be configured.
? high efficiency

應(yīng)用 Application

? Motor Drive Unit
? Refrigerator
? Games
? Computing Equipment

簡介

LV88552屬于開發(fā)板套件編程器的評估演示板及套件。由制造生產(chǎn)的LV88552評估和演示板及套件該系列產(chǎn)品提供了一種方便的方法，在經(jīng)過驗(yàn)證的實(shí)施環(huán)境中評估某些重點(diǎn)器件的性能或特性。評估方法通常有完善的文檔說明，并且視乎具體情況由評估軟件提供支持。產(chǎn)品通常由印刷電路板組成，板上已裝有重點(diǎn)器件以及必要或有用的支持元器件，另外也可能包括其他組件，例如電纜或電源。對于數(shù)量特別多或類別獨(dú)特的器件類別(如 ADC、DAC 和開關(guān)模式電源)，評估平臺可組合為一個單獨(dú)的產(chǎn)品系列。