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EN5336QI

3A PowerSoC Voltage Mode Synchronous Buck With Integrated Inductor Output Voltage Programming

Altera Corporation 

Enpirion® Power Datasheet

EN5336QI 3A PowerSoC

Voltage Mode Synchronous Buck

With Integrated Inductor

Output Voltage Programming

Description

The EN5336QI is a Power System on Silicon DC-

DC converter. It is specifically designed to meet

the precise voltage and fast transient

requirements of present and future high-

performance, low-power processor, DSP, FPGA,

memory boards and system level applications in

a distributed power architecture. 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

only small value input and output ceramic

capacitors, a soft-start capacitor and a resistor

divider for voltage feedback to set the output

voltage to the desired value.

Altera’s Enpirion solution significantly helps in

system design and productivity by offering greatly

simplified board design, layout and

manufacturing requirements. In addition, a

reduction in the number of vendors required for

the complete power solution helps to enable an

overall system cost savings.

Altera’s Enpirion products are RoHS compliant

and lead-free manufacturing environment

compatible.

Typical Application Circuit

Features

 Integrated INDUCTOR, MOSFETS, Controller

 Footprint 1/3rd that of competing solutions

 Minimum external components

 Up to 10W continuous output power

 5MHz operating frequency

 High efficiency, up to 93%

 VOUT accuracy 3% over line, load and temp

 Wide input voltage range of 2.375V to 6.6V

 External resistor divider for voltage feedback

and output voltage selection

 Output enable pin and Power OK signal

 Programmable soft-start time

 Programmable over-current protection

 Thermal shutdown, short circuit, and UVLO

 Output over-voltage protection

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

Applications

 Point of load regulation for low-power

processors, network processors, DSPs,

FPGAs, and ASICs

 Notebook computers, servers, workstations

 Broadband, networking, LAN/WAN, optical

 Low voltage, distributed power architectures

with 2.5V, 3.3V or 5V rails

 DSL, STB, DVR, DTV, iPC

 Ripple sensitive applications

VIN

22F

PVIN

AVIN

SS

15 nF

POK

AGND

VOUT

XOV

XFB

PGND

Figure 1. Simple Layout.

VOUT

47F

Ordering Information

Part Number

EN5336QI

EN5336QI-E

Temp Rating

(°C)

Package

-40 to +85

44-pin QFN T&R

QFN Evaluation Board

1

www.altera.com/enpirion

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