In all electronic devices and products, there is no shortage of power management ICs. With the rapid development of digital high-speed IC technology and chip manufacturing technology, the role of high-performance power ICs to help out is becoming more and more important. The ever-changing demand for electronic products and the rise of environmentally-friendly green energy-saving requirements have also placed higher demands on power ICs, stimulating the demand for a new generation of highly integrated, high-performance and energy-efficient power management ICs, and becoming the eternal power management IC manufacturer. mission.
Power management semiconductors clearly emphasize the location and role of power management integrated circuits (power management ICs, referred to as power management chips) from the included devices. The power management semiconductor consists of two parts, a power management integrated circuit and a power management discrete semiconductor device.
Power management ICs come in many categories and are roughly divided into voltage regulation and interface circuits. The voltage eliminator includes a linear low-dropout regulator (LOD), as well as a series of positive and negative output circuits, and a switching-mode circuit without a pulse width modulation (PWM) type.
Due to technological advances, the physical size of digital circuits in integrated circuit chips has become smaller and smaller, and thus the working power supply has developed toward low voltage, and a series of new voltage regulators have emerged. Interface circuits for power management mainly include interface drivers, motor drivers, power field effect transistor (MOSFET) drivers, and high voltage/high current display drivers.
Power Management Discrete semiconductor devices include some traditional power semiconductor devices, which can be divided into two categories, one containing rectifiers and thyristors; the other is triode type, including power bipolar transistors, containing MOS structures. Power field effect transistors (MOSFETs) and insulated gate bipolar transistors (IGBTs).
To a certain extent, it is precisely because of the massive development of power management ICs that power semiconductors have been renamed as power management semiconductors. It is precisely because so many integrated circuits (ICs) enter the power supply field that people are more often referred to as power management at this stage.
The main part of the power management semiconductor is the power management IC, which can be roughly classified into the following eight types.
1. AC/DC modulation IC. It contains a low voltage control circuit and a high voltage switching transistor.
2. DC/DC modulation IC. Includes boost/buck regulators, as well as charge pumps.
3. Power factor control PFC pre-modulation IC. A power input circuit with power factor correction is provided.