BA2904FVM-TR

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BA2904FVM-TR is a linear power supply from ROHM Semiconductor which is designed to provide stable power output in both normal operating conditions and during standby modes. This device is designed to meet the needs of the consumer electronics and industrial applications. It has a wide input range of 4.5V to 22V and provides high efficiency over the entire load range. Thus, it is suitable for battery powered and alternating current powered applications.

The BA2904FVM-TR is an ideal device to provide robust power supply to enable designers to develop drive systems as well as efficient solutions.It is equipped with ‘Current Limit Protection’, ‘Soft Start’, ‘Under Voltage Lockout’, ‘Dual Mode PWM Control’, and ‘Power Down Trickle Charge’ functions which ensure reliable operation and improved performance. Moreover, the device operates at 25A with a typical switching frequency of 300kHz and can be operated in pulse-width modulation (PWM) or linear control mode.

The reduced total harmonic distance (THD) and improved efficiency of the BA2904FVM-TR enable it to be used in industrial and consumer applications without extra components. For example, the device can provide precision power regulation with superior ripple rejection performance for instrumentation, OP amps, buffer amps, low-noise audio amplifiers, and power conversion systems. Moreover, the BA2904FVM-TR can be used to provide supply voltages for embedded controllers, ASICs, DSPs, and other microcontrollers.

In addition to its various features, the working principle of BA2904FVM-TR can also be described by analyzing its internal structure. To start with, the device consists of an integrated current mode flyback PWM controller and two synchronous MOSFETs which are connected in a synchronous buck configuration. The PWM controller provides the necessary regulation and utilizes both PWM and linear control modes by utilizing the voltage feedback and current sense inputs. This then results in superior switching speed and output voltage accuracy.

Furthermore, the PWM controller also provides protection functions in order to maintain reliability. Examples of the protection functions are Auto Restart and OVP (Over Voltage Protection). The integrated Auto Restart function will automatically reset the device in order to maintain its normal operation, while the OVP will shut down the device if the output voltage has risen above the upper voltage threshold. Furthermore, the other protection functions are Output Short Protection, Under Voltage Lockout, and Thermal Shutdown.

In conclusion, the BA2904FVM-TR is a linear power supply from ROHM Semiconductor which is designed to provide stable power output in both normal operating conditions and during standby modes. This device is ideal for providing a robust and efficient power supply for industrial and consumer applications, such as instrumentation, OP amps, buffer amps, low-noise audio amplifiers, and power conversion systems. Moreover, analyzing its internal structure provides an insight into its working principle, which includes an integrated current mode flyback PWM controller and two synchronous MOSFETs connected in a synchronous buck configuration. The PWM controller also provides various protection functions in order to maintain reliability.

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