POWER MANAGEMENT INTEGRATED CIRCUIT

摘要

PURPOSE: A power supply management device is provided to secure enough puncture voltage on an HS(High-Side) area and an LS(Low-Side) area by forming an electric field diffusion preventing part on the lower part of the metal wiring. CONSTITUTION: An HS area(200) is formed on a substrate(100). An LS area(300) is separately formed from the HS area by an element separation film(400). The metal wiring(500) is connected to the HS area through the element separation film. An electric field diffusion preventing part(700) is formed between the metal wiring and the element separation film and includes the metal and the polymer.