Title :
On chip voltage down converter for LV/LP digital system
Author :
Jou, Shyh-Jye ; Chen, Tsu-Lin
Author_Institution :
Dept. of Electr. Eng., Nat. Central Univ., Chung-Li, Taiwan
Abstract :
A new on-chip differential amplifier based DC to DC Voltage Down Converter (VDC) is proposed. The converter is a negative feedback-type voltage follower with precise internal reference voltage generator and high current drive capability. This VDC converts 5 V to a lower voltage that the internal circuits of the chip use. Here, 3 V is used as a test vehicle. The proposed VDC has characteristics such as output voltage remains 3 V over a large load current range (0-100 mA) and temperature dependency of 29 mV/°C. The VDC chip was fabricated in a 0.8 μm Single-Poly-Double-Metal CMOS process and layout size is 690×210 μm2. The output voltage is stabilized within ±1% for supply voltage with ±10% variation
Keywords :
CMOS integrated circuits; VLSI; circuit feedback; convertors; differential amplifiers; mixed analogue-digital integrated circuits; 0 to 100 mA; 0.8 micron; 3 V; 5 V; DC-DC voltage downconverter; LV digital system; differential amplifier based convertor; high current drive capability; low power digital system; negative feedback-type voltage follower; onchip voltage down converter; output voltage stabilization; precise internal reference voltage generator; single-poly-double-metal CMOS process; CMOS logic circuits; Capacitance; Digital systems; Equations; Frequency; MOS devices; Pipeline processing; Power dissipation; System-on-a-chip; Voltage;
Conference_Titel :
Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on
Print_ISBN :
0-7803-3583-X
DOI :
10.1109/ISCAS.1997.621545
