The EN5394QI is a voltage-mode synchronous buck PWM DC-to-DC Converter with integrated inductor, PWM controller, MOSFETS and compensation providing the smallest possible solution size in a 68-pin QFN module. The switching frequency can be synchronized to an external clock or other EN5394QIs with the added capability of phasing multiple EN5394QIs as desired. Other features include precision enable threshold, pre-bias monotonic start-up, margining and parallel operation. EN5394QI is specifically designed to meet the precise voltage and fast transient requirements of present and future high-performance applications such as set-top boxes/HD DVRs, LAN/SAN adapter cards, audio/video equipment, optical networking, multi-function printers, storage and servers. Advanced circuit techniques, ultra-high switching frequency and very advanced, high-density, integrated circuit and proprietary inductor technology deliver high quality, ultra-compact and non-isolated DC-DC conversion.
Output voltage margining
Monotonic output voltage ramp during startup with pre-biased loads
Precision enable pin for accurate sequencing of power converters and power ok signal
Programmable soft-start time
Soft shutdown
Programmable phase delays between synchronized units to allow reduction of input ripple
Master/slave configuration for paralleling multiple EN5394"s for greater power output
Undervoltage lockout, overcurrent, short-circuit and thermal protection