Fast transient technique (FTT) in buck current-mode DC-DC converters for low-voltage SoC systems
- Resource Type
- Conference
- Authors
- Chia-Hsiang Lin; Hong-Wei Huang; Ke-Horng Chen
- Source
- 2008 IEEE Custom Integrated Circuits Conference Custom Integrated Circuits Conference, 2008. CICC 2008. IEEE. :25-28 Sep, 2008
- Subject
- Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
DC-DC power converters
Transient response
Automatic frequency control
Dynamic voltage scaling
Voltage control
Signal to noise ratio
Switching frequency
Circuits
Time factors
Low voltage
- Language
- ISSN
- 0886-5930
2152-3630
This paper proposes a fast transient technique (FTT) to achieve excellent transient response of current-mode buck DC-DC converters. The proposed technique combines a non-linear control and a linear control mechanism to achieve fast transient response time, low output ripples, and stable transient operation at the same time. The test chip was fabricated in UMC 0.18-μm process. Experimental results show that the transient undershoot/overshoot voltage and the recovery time are not exceed 48mV and 10μs, respectively.