MagnaChip Semiconductor has developed its first line of power management integrated circuits (PMIC) for UHD display panels.
The PMICs include multiple power management functions to power space-constrained devices where high-efficient and compact form factors are required.
The monolithic PMIC 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. This level of integration results in smaller and faster electronic circuits. Other features include fast transient response and enhanced circuit protection measures.
It controls the power consumption of the panel through an I2C link for functions such as dynamic voltage management, on/off block, protection circuit fault flag and switching frequency transition in UHD display panels.
This helps address changes in current consumption and protects devices from damage with functions such as over voltage protection, short circuit protection, under voltage lockout, over current detection, over current limit and thermal shutdown. In addition, the PMIC also offers constant current mode and dynamic switching frequency, which gives product designers more flexibility in meeting specific requirements of application.
“PMIC design requires sophisticated technologies and we are proud to unveil our new PMIC for laptops, which incorporates our 10 years’ experience and technology leadership in the industry,” said YJ Kim, CEO of MagnaChip. “Our product roadmap will include possible expansion of our portfolio to address specialized display requirements from the tablet and OLED TV manufacturers, both of which are high growth potential markets.”
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