Active Filter-Based Hybrid on-Chip
DC–DC Converter for Point-of-Load Voltage Regulation
Abstract:-
The design of active filter-based on-chip DC–DC
voltage converter is realized here for application to distributed on-chip power
supplies in multi voltage systems is described in this paper. No inductor or output
capacitor is required in the proposed converter. The area of the voltage
converter is therefore significantly less than that of a conventional
low-dropout regulator. Hence, the proposed circuit is appropriate for
point-of-load voltage regulation for noise sensitive portions of an integrated
circuit. In the present design the performance of the circuit has been verified
with Cadence Spectre simulations and fabricated with a commercial 110 nm
complimentary metal oxide semiconductor technology. The parameter sensitivity
of the active filter is also described. The advantages and disadvantages of the
active filter-based, conventional switching, linear, and switched capacitor
voltage converters are compared. The proposed circuit is an alternative to
classical LDO voltage regulators, providing a means for distributing multiple
local power supplies across an integrated circuit while maintaining high
current efficiency and fast response
time within a small area.
Existing
System:-
In
the existing design the active filter is implemented to build on chip DC DC
Converter for voltage regulation. It shows that in the present design , On chip
activities are routed through distribution networks, The maximum current that
can be delivered to the load depends upon the size of the power transistors
(PMOS and NMOS shown in Fig. 2) driving the LC filter. A higher current can be
delivered with larger power transistors. The maximum load current of an LDO
regulator depends upon the size of the pass transistor.
Proposed
System:-
In the proposed design the active filter
concept is implemented and LDO dc dc conversion algorithm also being developed.
The clock distribution network also
designed with signal analysis module to detect glitches in the Converted
output.
