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PWM Controller

Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a technique used to encode a message into a pulsing signal. It is a type of modulation. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers,[1] the other being MPPT. The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load. The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on. The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle. PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.

Power Management > PWM Controller > DC to DC Controller

Наименование детали	DS	Производитель	Дата выпуска	Кол-во	Регион	Активный
LTC1624IS8		Linear	199829+	671	Japan	Связаться с продавцом
LTC1624IS8		Linear	-	34011	Hong Kong	Связаться с продавцом
LTC1624IS8		Linear	-	33	Hong Kong	Связаться с продавцом
LTC1624IS8		Linear	199829+	676	Taiwan	Связаться с продавцом

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