TMR 3-4811HI

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DC-DC converters come in a number of forms, each offering its own unique advantages and disadvantages. The TMR 3-4811HI is an isolated high-power single-output DC-DC converter with a wide input voltage range and high voltage protection. This converter is designed to convert an unregulated dc input of 160V/200Vdc to an isolated ± 48Vdc output.

The main features of the TMR 3-4811HI converter include a wide operating input range of 181-259Vdc, a low ripple output voltage of less than 80mV, a 400W power rating with superior EMI suppression, and a high level of power conversion efficiency to minimize overall power losses. It also has input over-voltage protection, output over-voltage protection, and various protection circuits such as short-circuit protection, over-temperature protection, and reverse connection protection.

The TMR 3-4811HI converter is ideal for a variety of applications such as distributed power systems, telecommunications, vehicle systems, chargers, and medical systems, due to its ability to provide reliable power conversion efficiently and safely.

The working principle of the TMR 3-4811HI converter is based on a high performance discontinuous conduction mode (DCM) topology. The TMR 3-4811HI converter uses Pulse Frequency Modulation (PFM) to measure and adjust the output voltage at precise intervals. The input voltage is regulated by isolation switches and a hardware based self-oscillating system to determine the switching frequency. A complex feedback control loop circuit is used to optimize the input to output regulation and maintain stable output voltage. The converter also has a low profile heat sink and fan for cooling during operation.

In conclusion, the TMR 3-4811HI is an isolated high-power single-output DC-DC converter with a wide input voltage range and high voltage protection. The converter is designed to convert an unregulated dc input to an isolated ± 48Vdc output and it is ideal for a variety of applications due to its ability to provide reliable power conversion efficiently and safely. The working principle of the TMR 3-4811HI converter is based on a high performance discontinuous conduction mode topology and it uses Pulse Frequency Modulation to measure and adjust the output voltage at precise intervals.

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