Title :
Design Flow for High Switching Frequency and Large-Bandwidth Analog DC/DC Step-Down Converters for a Polar Transmitter
Author :
Bathily, Malal ; Allard, Bruno ; Hasbani, Frédéric ; Pinon, Vincent ; Verdier, Jacques
Author_Institution :
Texas Instrum., Villeneuve-Loubet, France
Abstract :
System-on-chip requirements for energy management push both technology and design of voltage regulators to their limits. Integration constraints are added to high performance needs in terms of power efficiency and dynamic performance of the power converters. Switch-mode power supplies (SMPSs) are intended to supplant linear voltage regulators. This paper details a methodology to deal with different tradeoffs introduced by various specifications and constraints of embedded SMPSs. The design methodology is applied to the standard analog step-down SMPS architecture operating at very high switching frequency, and verified experimentally. The results are measured on test chips fabricated in standard 0.25-m BiCMOS technology, operating between 10 and 200 MHz, respectively, with a power efficiency up to 80% and a small-signal bandwidth of 1.2 and 15 MHz, respectively.
Keywords :
BiCMOS integrated circuits; DC-DC power convertors; control system synthesis; system-on-chip; transmitters; voltage regulators; BiCMOS technology; SMPS; bandwidth 1.2 MHz to 15 MHz; energy management; frequency 10 MHz to 200 MHz; high switching frequency; large-bandwidth analog DC-DC step-down converters; linear voltage regulator design; polar transmitter; power converters; power efficiency; size 0.25 mum; switch-mode power supply; system-on-chip; test chips; Bandwidth; DC-DC power converters; Delay; Multiaccess communication; Radio frequency; Switched-mode power supply; Switching frequency; Buck converter; dc/dc; pulsewidth modulation (PWM); switch-mode power supplies (SMPS); system-on-chip (SoC);
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2011.2158659
