Renesas Technology Introduces Dual-type Power MOSFET for More Efficient DC/DC Converters for Laptop PCs and Communication Devices

Renesas Technology Introduces Dual-type Power MOSFET for More Efficient DC/DC Converters for Laptop PCs and Communication Devices

Renesas today announced the RJK0383DPA, a dual-type power MOSFET that enables smaller, higher-efficiency synchronous-rectification DC/DC converters for generating various supply voltages in communication devices and laptop PCs.

The advanced, tenth-generation device integrates high-side and low-side power MOSFETs and a Schottky barrier diode in a compact (5.3×6.2×0.8mm, max.) package with high thermal conductivity. In a synchronous-rectification circuit converting a 12V DC input to a 1.1V DC output at  600 kHz switching frequencies, it achieves an efficiency rating of 91.6 percent. Output current is doubled from earlier dual-type power MOSFETs from Renesas.

The higher power supply efficiency of the RJK0383DPA has two important benefits. It uses a small WPAK package that reduces the chip mounting area to about half that of a dual-package power MOSFET configuration, offering the same level of power supply efficiency. It also allows the device to deliver more output current. Smaller synchronous-rectification DC/DC converters are thus enabled, facilitating the higher mounting densities sought in mobile devices and other products in which small size adds convenience.