Implantable biomedicai systems usually operate in energy-limited environments and exhibit large variation of power consumption ranging from constant low-power (bio-signal sensing) to sporadic high-power (stimulation and/or burst data transmission) . Thus, energy-efficient switching power converters that can support a wide range of load variation are necessary to meet this requirement. Pulse frequency modulation (PFM) power converters can support this large load variation with a high power-conversion efficiency (PCE) . However, their unpredictable switching noise degrades the power supply integrity and hence deteriorates the signal quality in implantable biomédical systems. Pulse-width modulation (PWM) power converters can provide predictable output spectrum, but their PCE in light loads suffers. Although various techniques have been explored over the past years [3-5], the PCE of the PWM converters is still not adequate for low current levels (<100uA) that most of the implantable biomedicai systems consume.
|Title of host publication||2015 IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||2|
|Publication status||Published - 2015 Mar 17|
|Event||2015 62nd IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers - San Francisco, United States|
Duration: 2015 Feb 22 → 2015 Feb 26
|Name||Digest of Technical Papers - IEEE International Solid-State Circuits Conference|
|Other||2015 62nd IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers|
|Period||15/2/22 → 15/2/26|
Bibliographical notePublisher Copyright:
© 2015 IEEE.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering