EXHIBIT 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (Nos. 033-62561 and 333-34846) and the Registration Statements on Form S-8 (Nos. 333-195568. 333-192678, 333-175608, 333-171135, 333-166701, 333-150529, 333-140071, 333-135678, 333-129283, 333-82556, 333-35526, 333-24045, 033-62563, and 033-63395) of Microsemi Corporation of our report dated November 13, 2014 relating to the financial statements, financial statement schedule and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP

Irvine, California

November 13, 2014