EXHIBIT 23.1

            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the following Registration
Statements:

(1)   Registration Statement (Form S-8, No. 33-37491) pertaining to the 1984
      Stock Option Plan of Vicor Corporation,

(2)   Registration Statement (Form S-8, No. 33-65154) pertaining to the 1993
      Stock Option Plan of Vicor Corporation,

(3)   Registration Statement (Form S-8, No. 333-61177) pertaining to the 1998
      Stock Option and Incentive Plan of Vicor Corporation,

(4)   Registration Statement (Form S-8, No. 333-44790) pertaining to the 2000
      Stock Option and Incentive Plan of Vicor Corporation, and

(5)   Registration Statement (Form S-8, No. 333-99423) pertaining to the Amended
      and Restated 2000 Stock Option and Incentive Plan of Vicor Corporation;

of our report dated March 9, 2006, with respect to the consolidated financial
statements and schedule of Vicor Corporation and our report dated March 9, 2006
with respect to Vicor Corporation management's assessment of the effectiveness
of internal control over financial reporting, and the effectiveness of internal
control over financial reporting of Vicor Corporation, included in this Annual
Report (Form 10-K) for the year ended December 31, 2005.

                                      /s/ Ernst & Young LLP


Boston, Massachusetts
March 9, 2006