CSS50030

AC DC Converters

AC/DC converters are devices used to convert alternating current (AC) to direct current (DC). The most common type of AC/DC converter is the transformer. However, there are a variety of other types of AC/DC converters, all with different working principles.

The CSS50030 is a switching regulator designed to convert AC power to a regulated 5V DC output. The device utilizes an internal current-mode controller with adaptive on-time control and is capable of achieving high efficiency without the need for external compensation components. The CSS50030 also features an integrated over-voltage protection (OVP) and integrated current limiting (IL) which prevents over-current damage and helps maintain a stable output voltage.

The CSS50030 operates by turning the power MOSFET switch on and off in a rapid sequence known as Pulse Width Modulation (PWM). The rate at which the switch is turned on and off determines the output voltage. A small error amplifier compares the output voltage to an internal reference voltage and adjusts the on-time of the switch accordingly. As the load increases, the switch’s on-time is longer, thus keeping the output voltage regulated within a range of ±5%. Additionally, the CSS50030 utilizes a PFC pre-regulator to regulate the input voltage. This helps the device to avoid overshoot when the input voltage is adjusted.

The CSS50030 is primarily used in a variety of applications including battery charger, telecom, industrial, consumer products and automotive applications. It also features a wide operating and efficiency range, making it suitable for a variety of input and load conditions. The wide 4V to 24V input voltage range makes the CSS50030 ideal for use in high voltage applications such as car stereo, automotive, and consumer electronics. It can also be used as a battery charger to charge Li-ion or Ni-MH type battery packs.

In addition to its versatility, the CSS50030 also offers several features designed to increase system efficiency. It features an integrated input over-voltage protection (OVP) and integrated current limiting (IL) which protects the device from over-current events and helps maintain a stable output voltage. Furthermore, the CSS50030 offers low-weight components and low-EMI solutions, which helps reduce bill-of-materials (BOM) costs, and save circuit board space.

The CSS50030 offers efficient power conversion, robust protection, and high reliability, making it an ideal solution for AC-DC conversion applications. Its wide operating range and efficiency range make it an excellent choice for a variety of input and load conditions. Furthermore, the integrated features help reduce BOM costs and save circuit board space.