A Voltage Error Quantizer For Digital Low Dropout Regulators With Fast Transient Response and Low Steady-State Error
- Resource Type
- Conference
- Authors
- Zhou, Kaize; Li, Dejian; Shen, Chongfei; Du, Yuxuan; Chen, Zhuo; Shan, Weiwei
- Source
- 2022 IEEE International Conference on Integrated Circuits, Technologies and Applications (ICTA) Integrated Circuits, Technologies and Applications (ICTA), 2022 IEEE International Conference on. :102-103 Oct, 2022
- Subject
- Components, Circuits, Devices and Systems
Robotics and Control Systems
Integrated circuit technology
Transient response
Regulators
Quantization (signal)
Codes
CMOS process
Steady-state
Voltage error quantizer
on-chip self-calibration
digital low dropout regulator
fast transient response
- Language
- ISSN
- 2831-3968
This paper proposes a voltage error quantizer for digital low dropout regulators (DLDOs) with fast transient response and low steady-state error. Compared with traditional DLDOs quantizing the reference voltage and output voltage separately, the proposed voltage error quantizer quantifies the voltage difference directly with high quantization speed and accuracy. Implemented in 28nm CMOS process, the proposed quantizer with on-chip self-calibration identifies the voltage difference as small as 4mV and has stable output codes at sampling frequencies up to 500MHz, which satisfies the fast transient response and low steady-state error demands of DLDOs.