Hi,
Here are some of the top colleges for m.tech in vlsi design in India-

Indian Institute of technology, New Delhi

Indian Institute of technology, roorkee

Chandigarh university

Bharati vidyapeeth deemed university, pune

Indian Institute of engineering science and technology, shibpur

Indian Institute of technology, guwahati

National Institute of technology, Surathkal

Amity university, noida

KL university , guntur

Malaviya national Institute of technology, jaipur

SVNIT , surat

National Institute of technology, hamirpur

Guru gobind singh Indraprastha university, New Delhi

Hope it helps...