DSSK40-0015B

The DSSK40-0015B is a three-phase rectifier module belonging to the Diodes-Rectifiers-Arrays field. It is a high-frequency switching device that requires a minimum number of external components. The application field of this device includes power switching supply, uninterruptible power supply, battery charger, and other AC/DC or DC/DC conversion applications.

The DSSK40-0015B is designed as an isolated high-frequency AC/DC converter module. It consists of a full-bridge rectifier and four integrated FETs that form the switching element. It is provided in a miniature SIP (Single-In-line-Package) with very low conduction losses. The input voltage range covers AC, DC, or a combination of both.

In order to provide the right output voltage, the DSSK40-0015B has to be driven by a suitable high-frequency PWM (pulse-width modulation) circuit, such as the popular UCC2890x controller from Texas Instruments. This PWM circuit is responsible for providing the necessary control signals for the switching of the four FETs. In combination with an external PWM circuit and the DSSK40-0015B, it is possible to achieve a high efficiency and good steady-state operation over a wide input voltage and load range.

The DSSK40-0015B features a high frequency operation, allowing for an extremely small physical size and low electromagnetic interference (EMI). It requires only a minimum number of external components, such as a minimum output filter inductance, a snubber capacitor, and a thermal protection switch. Moreover, the device can be configured as either a synchronous rectifier or a buck converter.

The synchronous rectifier operation is achieved by driving the FETs with a square wave signal (in phase with the input voltage and continuous input-source conduction). The switching is done by monitoring the output voltage and driving the FETs accordingly. This operation has the advantage of low power loss and low EMI.

In buck converter operation, the FETs are driven with a variable duty cycle signal, based on the feedback solution of the output voltage (Normally a PIC microprocessor is used for providing the signal). This operation has a higher efficiency but also generates higher EMI noise.

The DSSK40-0015B also incorporates a set of protective features, such as over-voltage and over-temperature protection, active current-limiting, and dead time protection. The over-voltage protection prevents the output from exceeding the maximum limit, thus protecting the module from damage. Similarly, the over-temperature protection limits the maximum temperature that can be reached in the module, enabling safe operation. The active current-limiting feature provides an extra layer of protection by limiting the current in the event of short-circuiting. Finally, the dead time protection prevents current flow in the opposite direction while the FETs are switching states.

In conclusion, the DSSK40-0015B is a high-frequency diode rectifier array device with numerous capabilities and features. It can be used in a wide range of applications, including power supply, uninterruptible power supply, and battery charger. In addition, it provides a high efficiency and low electromagnetic interference, while also incorporating various protective features.