A 0.42-V Input Boost dc-dc Converter With Pseudo-Digital Pulsewidth Modulation

作者：Sun Zhuochao^*; Chew Kin Wai Roy; Tang Howard; Yu Guolei; Siek Liter

来源：IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2014, 61(8): 634-638.

DOI：10.1109/TCSII.2014.2331113

• Boost direct current (dc)-dc converter
• dead-time control (DTC)
• low input voltage
• pseudo-digital pulsewidth modulation (P-DPWM)

A pseudo-digital pulsewidth modulation (P-DPWM) controlled boost direct current-direct current converter is presented in this brief. By applying low-voltage analog design techniques into the traditional digital pulsewidth modulation (DPWM) structure, the proposed P-DPWM achieves new features of high resolution, low power, and small area while retaining the low-supply feature of the DPWM. A test chip has been designed and fabricated in a 65-nm CMOS process with an area of 1.44 mm(2) to validate its performance. A peak efficiency of 86% is achieved. The correct functionality is also demonstrated with the controller supply as low as 0.42 V, which is ideal for sub-1 V low-supply applications.

• 出版日期2014-8
• 单位南阳理工学院