MP1497SGJ-P

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The MP1497SGJ-P is a high density, high efficiency and highly integrated DC/DC converter engineered specifically for driving LEDs. It provides a very efficient, small form factor electronic solution for driving single high powered LEDs, making it an ideal substitute for magnetic ballast solutions. It has a high power factor and an extremely low no-load input current.

The MP1497SGJ-P is a monolithic, low voltage regulated DC/DC converter. This DC/DC converter contains a 6-terminal, integrated step-down switching regulator, switching MOSFETs, inductor, input filtering capacitor, resistors, SN3460 converter controller, as well as 100 kHz oscillator. Additionally, integrated protection features which include overcurrent protection and temperature protection to protect the device from damage. The MP1497SGJ-P also has an adjustable output voltage, making the device ideal for automotive, industrial and commercial applications.

The application field of the MP1497SGJ-P mostly consists of driving single high powered LEDs. This voltage regulator operates in a buck or step-down mode. In step-down mode, the MP1497SGJ-P reduces the input voltage to the desired output voltage. It draws a constant current and maintains a constant output voltage regardless of the input voltage fluctuations, making the device preferable for powering single high powered LEDs. It can also be used in other DC/DC applications such as power management units, battery chargers, etc. when higher efficiency is desired.

The operating principle of the MP1497SGJ-P is based on switching MOSFETs. The SN3460 controller indirectly drives the MOSFETs, which forms a power switch circuit. A type of resonant circuit called a pi filter is used for input filtering and output rectification. When the SN3460 controller switches the MOSFETs, the inductors and capacitors of the switch circuit are charged or discharged, causing the voltage of the output inductor to increase or decrease. The output voltage is obtained by using an opto-coupler to regulate the oscillation frequency of the switching MOSFETs. The MP1497SGJ-P also contains a temperature protection circuit that disables the MOSFETs when the device’s temperature exceeds a certain limit.

In summary, the MP1497SGJ-P is a highly integrated DC/DC converter specifically engineered for driving single high powered LEDs. Its efficient, small form factor and adjustable output voltage make it an ideal substitute for magnetic ballast solutions. It has a high power factor and extremely low no-load input current. Its operating principle is based on a switch mode power supply circuit with a type of resonant circuit used for input filtering and output rectification with an opto-coupler controlling the switching MOSFETs. This device is mainly used to power high powered single LED’s, but it can also be used in other DC/DC applications when high efficiency is required.

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