Title :
FB3480 new high speed current mode control IC master chip [for power supplies]
Author :
Nalbant, Mehmet K. ; Davis, W. Richard
Author_Institution :
Micro Linear Corp., San Jose, CA, USA
Abstract :
A reconfigurable high-speed switching regulator controller integrated circuit for power supply applications is introduced. The integrated circuit, designated as the FB3480, is an analog array chip with several preoptimized functional blocks usually found in high-performance controllers. In addition the chip has several large sections that can be reconfigured to meet specific design needs. The FB3480 contains a high-speed error amplifier with a bandwidth >4 MHz, a precision bandgap voltage reference (1%), a precision high-speed oscillator of frequency f>1 MHz, dual totem-pole output stages with an output >1.5 A, undervoltage lockout, high-speed ECL/EFL logic, and many uncommitted components for circuit customization. The discussion covers the FB3480 along with two of its derivatives, the ML4825 and the LM4809
Keywords :
controllers; power integrated circuits; power supplies to apparatus; voltage regulators; FB3480; LM4809; ML4825; analog array chip; bandgap voltage reference; bandwidth; design; error amplifier; high-speed ECL/EFL logic; high-speed oscillator; power supplies; switching regulator controller integrated circuit; undervoltage lockout; Analog integrated circuits; Application specific integrated circuits; Bandwidth; Frequency; High speed integrated circuits; Photonic band gap; Power supplies; Regulators; Switching circuits; Voltage-controlled oscillators;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1989. APEC' 89. Conference Proceedings 1989., Fourth Annual IEEE
Conference_Location :
Baltimore, MD
DOI :
10.1109/APEC.1989.36963
