Vorrichtung und Verfahren zur gemeinsamen Stromnutzung in einem mehrphasigen Schaltregler

Details

Veröffentlichungs-Nr.

EP2985899

Aktenzeichen

EP14181098

Anmeldetag

14. August 2014

Veröffentlichung

17. Februar 2016

Rechtsraum

EP

IPC

H02M3/158H02M1/00

Abstract

An apparatus and method for a multi-phase switch regulator with improved efficiency is disclosed. The device has parallel implementations for the different phases comprising a driver (80A,80B), a current sense variable gain amplifier (100A,100B), a current share circuit (70), a pulse width modulation (PWM) control circuit (60), a trim network (110), and an inductor (120A,120B). A method is disclosed of providing a system with current sharing function comprising a driver circuit, a current sense circuit, a current share circuit, a PWM control circuit and a trim circuit, providing a current sense circuit for each segment of a driver circuit, sensing a signal using a current sense circuit for each segment of a driver circuit, comparing the output of the current sense circuit, providing the current error information to a PWM controller, generating a PWM drive signal of each phase, and finally, equalizing the output of the current sense amplifier. Other methods that utilize dummy output stages and low pass filter feedback are disclosed.

Anmelder

Firmen

Apple Inc.
Dialog Semiconductor (UK) Limited

Land

🇺🇸 USA

Fachgebiete