UC2827N-1G4

The UC2827N-1G4 is a voltage regulator in the field of PMIC, DC DC Switching Controllers. It is a controller chip used for the power supply system switching power supply. This chip is used in applications such as server power, laptop power, LCD/LED display power supply, etc.

The working principle of the UC2827N-1G4 is based on synchronous rectification. It is a topology of PWM series-regulation synchronous rectification, which uses the current sense signal of the synchronous rectifier (SR) MOSFET to control the output voltage of the power supply. The current sense signal is sent to the internal comparator, which adjusts the output of the PWM controller to achieve the desired output voltage. The chip also has two input voltage pins, one of which is used to adjust the output voltage, and the other is used to monitor the input voltage to prevent over voltage/under voltage conditions.

The UC2827N-1G4 power module integrates the functions of pulse-width modulation (PWM) control, current sense and over-current protection (OCP). It is composed of a PWM integrated circuit (IC) and several external components such as resistors and capacitors. The chip has three input pins, Vcc, Vref, Vo, and five output pins, Vccout, Vo, Sout, Iout, and VCCOOCP. It also has an enable pin, which is used for power on/off control.

The UC2827N-1G4 provides current sense, enabling high-power applications to maintain accurate output voltage and better stability. The built-in light load detection can reduce the quiescent current at light load and improve the efficiency of the whole system. The current sense slope can be adjusted to the desired value independently. The external component count is also able to reduce, making it easy to design.

The UC2827N-1G4 is an ideal choice for power supply solutions with large output power and high accuracy requirements. It is suitable for a wide range of applications, such as server power, LCD/LED display power supply, laptop power, small-scale industrial control, etc. It has excellent safety and reliability performance and can meet the needs of all kinds of applications.