GATELEAD28489HPSA1

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GATELEAD28489HPSA1 is a high power, low noise, high switching frequency, switching regulator for driving array LED in application fields such as large LED display, automotive lighting, etc. In order to save more power, GATELEAD28489HPSA1 adopts the integrated chip design, and the design is also adapted for energy storage, higher efficiency and higher power density.

The working principle of GATELEAD28489HPSA1 is based on traditional switching regulator technology. In a simplified sense, it works like this: A DC source input to the regulator can be converted to regulated DC output through the control of the switch. It is composed of a power MOSFET (Metal-oxide-semiconductor field-effect transistor), inductor, capacitor, and other components. The power MOSFET is controlled by the Pulse Width Modulation (PWM) of the controller. When the power MOSFET is turned on, current flowing through the inductor accumulates energy in the form of magnetic flux. Moreover, the energy storage in the inductor is efficiently transmitted to the output capacitor when the power MOSFET is turned off. In the switching cycle, the output capacitor will charge first until the output voltage reaches the set voltage, and then the power MOSFET will cut off the current. Therefore, the output voltage of the regulator can be kept at the user\'s setting under the effect of the output capacitor.

GATELEAD28489HPSA1 has a special feature of active current sharing. This feature overcomes the limitation of the load current caused by the output current imbalance of each channel. Moreover, GATELEAD28489HPSA1, which supports low noise, also has the anti kick-back function to effectively prevent the interference between channels.

GATELEAD28489HPSA1 has a wide range of applications. It is suitable for LED backlight applications in the field of video display. For the high-resolution video display, GATELEAD28489HPSA1 is also a suitable choice. The current sensor in GATELEAD28489HPSA1 can be connected to the controller, so that the output current of each channel can be balanced to achieve higher accuracy. It is also widely used in automotive lighting, such as high beam, low beam, parking lights, fog lights, headlights and so on. Low noise, high efficiency and small size make GATELEAD28489HPSA1 become the preferred choice.

To sum up, GATELEAD28489HPSA1 features high power, low noise, high switching frequency, integrated chip design, active current sharing, anti kick-back function, wide application fields and so on. Thanks to its excellent performance, GATELEAD28489HPSA1 can be widely used in large LED display, automotive lighting and other fields.

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