描述 Description

The EN5394QI is a Power Supply on a Chip (PwrSoC) 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, test and measurement, embedded computing, 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, non-isolated DC-DC conversion. Operating this converter requires very few external components.

The Enpirion integrated inductor solution significantly helps to reduce noise. The complete power converter solution enhances productivity by offering greatly simplified board design, layout and manufacturing requirements.

All Enpirion products are RoHS compliant and lead-free manufacturing environment compatible.

特性 Features

? Integrated Inductor, MOSFETS, Controller in

a 8 x 11 x 1.85mm package

? Wide input voltage range of 2.375V to 6.6V.

? > 30W continuous output power.

? High efficiency, up to 93.

? Output voltage margining

? Monotonic output voltage ramp during start

up with pre-biased loads.

? Precision Enable pin for accurate sequencing

of power converters and Power OK signal.

? Programmable soft-start time.

? Soft Shutdown.

? 4 MHz operating frequency with ability to

synchronize to an external system clock or

other EN5394’s.

? Programmable phase delays between

synchronized units to allow reduction of

input ripple.

? Master/slave configuration for paralleling

multiple EN5394’s for greater power output.

? Under Voltage Lockout, Over-current, Short

Circuit, and Thermal Protection

? RoHS compliant, MSL level 3, 260C reflow.

Applications

? Point of load regulation for low-power

processors, network processors, DSPs,

FPGAs, and ASICs

? Low voltage, distributed power architectures

with 2.5V, 3.3V or 5V, 6V rails

? Computing, broadband, networking,

LAN/WAN, optical, test & measurement

? A/V, high density cards, storage, DSL, STB,

DVR, DTV, Industrial PC

? Beat frequency sensitive applications

? Applications requiring monotonic start-up with

pre-bias

? Ripple voltage sensitive applications

? Noise sensitive applications