TMR 3-1221HI

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DC-DC converters are essential electronic components for commercial products, because they convert electrical power from one DC voltage source to another, while isolating the two distinct voltage sources. The TMR 3-1221HI DC-DC Converter is a high- Frequency, high-efficiency step-up DC/ DC converter that is optimized for applications requiring improved efficiency, fast transient response, and high-accuracy regulation.

The TMR 3-1221HI DC-DC converter is a single-inductor boost topology converter with a wide input voltage range of 4.5 V to 28 V and a guaranteed output voltage accuracy of ±2%. It is capable of providing stable operation from low input voltage as low as 0.9 V and a maximum output current of 2 A. It is also configured to have a low operating temperature to minimize power dissipation while maintaining high efficiency even at light loads.

The main application field of the TMR 3-1221HI is in LED backlighting and battery powered electronics. For LED backlighting, it features fast transient time of 1.2 µs, accurate constant current regulation within 3%, and bright/dim constant power pulse width modulation (PWM) control. Furthermore, its low quiescent current at light load and active burst mode operation extend battery life and reduce power consumption to make it suitable for use in battery-powered electronics.

The working principle of the TMR 3-1221HI DC-DC converter is based on an LLC resonant topology combined with a voltage converter and linear regulator. The input voltage is filtered in order to reduce noise, and then it\'s rectified and stepped-up by an LLC resonant converter. This increased voltage is then used to control the output voltage through a voltage converter and a linear regulator. The output voltage is further regulated using a regulated voltage loop feedback mechanism. The output voltage is regulated to maintain accuracy when the input voltage fluctuates.

The TMR 3-1221HI DC-DC converter is a versatile, high-performance power conversion solution that offers high efficiency, fast transient response, and accurate regulation. Its use in LED lighting applications and battery powered electronics makes it an ideal choice for projects requiring reliable DC-DC conversion solutions.

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