This paper proposes a new on-chip 3.3V-to-1.8V voltage down converter, which employs a new reference voltage generator (RVG) and a PMOS pass device with forward-biased source-to-bulk circuit. By the use of the forward-biased source-to-bulk technique, the circuit achieves approximately an 18% output current improvement over its nonforward-biased state. The proposed VDC has characteristic such as output voltage (V out ) is stabilized within ±6mV over a large load current range (0-100mA) and within ±0.16% for ±10% variation of supply voltage. The temperature dependency of Vout is only 0.53mV/0 C with temperature ranging from 0 to 100 0 C.
['Qianneng Zhou', 'Fengchang Lai', 'Mingyan Yu']
On-chip 3.3V-to-1.8V voltage down converter for low-power VLSI chips