EN5394QI 데이터 시트보기 (PDF) - Altera Corporation

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EN5394QI

9A PowerSoC Voltage Mode Synchronous Buck PWM DC-DC Converter With Integrated Inductor

Altera Corporation 

Block Diagram

S_OUT S_IN

M_S

UVLO

Thermal Limit

Current Limit

Digital I/O

MAR1/2

Over Voltage

PVIN

To PLL

P-Drive

(-)

PWM

Comp

(+)

PLL / Sawtooth

Generator

ENABLE

SS

Soft Start

N-Drive

EAOUT

Compensation

Network

(-)

Error

Amp

(+)

Reference

Voltage

selector

power

Good

Logic

Bandgap

Reference

EN5394QI

NC(SW)

VOUT

PGND

VFB

POK

EN_PB

EAOUT

MAR1 MAR2

Figure 3: System block diagram.

Functional Description

Synchronous Buck Converter

The EN5394QI is a synchronous, programmable

power supply with integrated power MOSFET

switches and integrated inductor. The nominal

input voltage range is 2.375-6.6V. The output

voltage is programmed using an external resistor

divider network. The feedback control loop is a

type III, voltage-mode, and the device uses a

low-noise PWM topology. Up to 9A of continuous

output current can be drawn from this converter.

The 4MHz operating frequency enables the use

of small-size input and output capacitors.

03738

9

October 11, 2013

www.altera.com/enpirion

Rev E

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