Engineering 101

MagnaChip Unveils Laptop Power Management IC with UHD Display Panels

MagnaChip Semiconductor Corporation announced a new line of power management integrated circuits (PMICs) with its first UHD display panel PMIC for laptops. Frequently used to power space-constrained devices where high-efficient and compact form factors are required, PMICs are essential for battery-operated devices as battery life depends on PMIC power-management efficiency.

The newly released UHD display panel PMIC for laptops features the company’s latest PMIC technologies. It controls electricity consumption through I2C (Inter-Integrated Circuit) technology, ensuring that dynamic voltage management, on/off block, protection circuit fault flag, and switching frequency transition in UHD display panels are seamless.

The PMIC is a monolithic IC, which includes one boost regulator for the power supply to source and gate drivers, three high-current buck regulators for power supply to a timing controller, two Op-Amp for gamma buffer, and one each positive and negative charge pumps. The high integration results in smaller and faster circuits and can help address changes in current consumption, protecting devices from damage with such functions as over-voltage protection, short circuit protection, under-voltage lockout, over current detection, over current limit, and thermal shutdown. It also offers constant current mode and dynamic switching frequency, providing more flexibility in meeting application-specific requirements.

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