SP7122AEB

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SP7122AEB is an evaluation board for LED drivers. It is based on a high-efficiency PFC bridgeless control chip, used to drive high-power LEDs with a wide range of voltages. It is also used to evaluate the SP7122AEM in an approximate application circuit. In addition, SP7122AEB is designed equipped with functions such as LED dimming, LED fault signal reporting and LED thermal shutdown protection.

In general, LED drivers are designed to control the voltage and current supplied to an LED or LED array. All LED drivers are slightly different, but they all have the same goal: to provide the LED with the voltage and current it needs using the fewest components. Higher efficiency drivers, such as the SP7122AEB, are preferred for lighting applications, as they can save energy and reduce cost.

SP7122AEB has a very simple and efficient working principle. To start, its PFC control chip takes an input voltage of 100 to 277V AC, converts it to a 400V DC bus voltage with power factor corrector, and then feeds it to its buck circuit. The PFC bridge features an internal MOSFET, allowing it to save external power components. The switching frequency can be adjusted using the on board boost inductor and a capacitor to enable transition from weak light to higher power.
In its buck circuit, the SP7122AEB can regulate the average value of current, implementing a mean current model algorithm with the MOSFET, so the output current is almost sinusoidal. Its current loop control can avoid switching noise and efficiently ensure LED load stability. Its low output ripple gives a broad power range from 3W to 35W, allowing flexible LED applications. Due to its high efficiency, the SP7122AEB has a very low total harmonic distortion at high power levels. Its wide voltage range makes it suitable for multiple LED configurations.

In addition, the SP7122AEB features several protection and reporting functions such as LED open circuit protection, LED short circuit protection and LED thermal shutdown protection. Its output voltage detection oscillator can monitor the LED voltage, reporting any LED faults or LED open circuits. It also features LED dimming control, variable LED output current and fast PWM dimming, allowing users to switch between dimming and non dimming modes.

Overall, the SP7122AEB evaluation board is designed as an ideal LED drive solution for high power LED application. Its high efficiency, wide voltage range and comprehensive protection and reporting functions make it a great choice for those who need an exact evaluation of the SP7122AEM in an approximate application circuit. The powerful device is capable of achieving a great balance between low cost and high performance for LED applications.

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