V28A8M200BF

DC DC Converters

DC DC converters are devices used to efficiently convert a high direct current (DC) voltage to a lower voltage.

The V28A8M200BF is a member of a family of isolated step-down DC DC converters. The device incorporates an internal synchronous rectifier to achieve high efficiency with reduced size and minimal external component count. The device utilizes a cycle-by-cycle current limit control, preventing the possibility of damage due to over-current conditions. The V138A8M200BF is capable of delivering up to 200W of continuous output power at voltages as low as 1.5V. An optional remote enable function allows the device to be used to control power requirements in a variety of applications.

Application Field

The V28A8M200BF is applicable in a wide range of applications, including portable power equipment, medical equipment and industrial instrumentation. Its low-voltage output capability makes it an ideal choice for home appliances, automotive and broadcasting systems, as well as for powering FPGA/ASICs and other embedded systems.

Working Principle

The V28A8M200BF is a synchronous rectification, switch-mode, step-down DC DC converter. It operates by converting an input voltage source into a square-wave current waveform. This waveform then passes through a transformer to generate a higher alternating voltage (AC). The output voltage is then regulated by a pair of synchronous rectifiers, which convert the AC voltage into a regulated DC voltage. These rectifiers can control the output voltage to within 1 percent of its desired value. The internal control loop also monitors the temperature of the converter and responds by adjusting its output voltage to prevent excessive heat exposure.

The V28A8M200BF uses a constant on-time control scheme. This works by monitoring the output voltage and then regulating the number of switching cycles needed to maintain the output voltage within the specified range. This ensures that the output voltage remains stable regardless of the input voltage or load conditions.

The V28A8M200BF also includes an optional remote enable feature. This allows the user to control the power output of the device in applications where it is not desired to maintain a constant output. This feature can be used, for example, to control the power of a motor in a motor control system.

The V28A8M200BF is a high-efficiency DC DC converter, capable of delivering up to 200W of output power at 1.5V. Its low-voltage capability, along with its integrated synchronous rectification technology, makes it an ideal choice for powering medium to high power applications. The integration of a Remote Enable control feature makes it a versatile choice for a variety of applications.