THD 15-1211N

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

DC-DC converters play a critical role in power-electronic systems designed to provide regulated and/or isolated DC bus voltages. Although these applications span a wide range of power levels, low-power applications have grown in importance with the increasing need for portable, mobile, or distributed power electronics systems. For instance, when integrated into a battery-powered product, DC-DC converters proven to be an effective way to improve the battery life. Among the various DC-DC converters, the use of a DC-DC converter with a fly back topology such as the THD 15-1211N is particularly appealing for these applications.

The THD 15-1211N has several important advantages over a standard transformer-based fly back converter: lower cost, less component count, reduced weight; electrically isolated output; good no-load power capability; and a more compact size. This makes the THD 15-1211N well suited for low-power, low-voltage applications that require a regulated or isolated DC bus voltage. Typical applications include, but are not limited to, laptop and desktop computers, point-of-load (POL) power supplies, telecommunications, automotive, industrial control, and medical.

The conversion process of the THD 15-1211N starts with the input voltage, which is applied a unique fly back primary winding. A high-speed pulse-width modulation (PWM) controller regulates the output voltage by adjusting the dutycycle of the applied input voltage. The primary winding is inductively coupled to a secondary winding, which is use ed to create the output voltage.

The secondary winding is made up of two diodes, a storage capacitor and a magnetic shunt that limits the peak voltage. The output voltage is then rectified by a diode bridge before being filtered by the capacitor. This supplies the output voltage that the device regulates with the PWM controller. Since the device works in continuous conduction mode, the output voltage is independent of line and load variations.

The THD 15-1211N also includes a number of protection features designed to increase the long-term reliability of the power-electronics systems. These features include undervoltage lockout (UVLO), input current limiting, overvoltage protection, and overtemperature protection. These features allow the device to shut down if either the input voltage or the output voltage exceeds its specified limits. In addition, the device can be programmed via an external resistor network to limit the output current to protect downstream components from overloading.

The THD 15-1211N is a versatile, cost effective DC-DC converter that is well suited for low-power, low-voltage applications where a regulated or isolated DC bus voltage is required. The device is capable of operating from input voltages ranging from 9 to 36 volts and is rated to deliver up to 15 watts of continuous output power. It also features integrated protection features and can be easily programmed to limit output current.

The specific data is subject to PDF, and the above content is for reference