APW7016KC 데이터 시트보기 (PDF) - Anpec Electronics

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APW7016KC

Advanced PWM Power Controller

Anpec Electronics 

APW7016

Advanced PWM Power Controller

Features

General Description

• Simple Single-Loop Control Design

−Voltage-Mode PWM Control

• Excell Output Voltage Regulation

−PWM Output : ±1% Over Temperautre

• Fast Transient Response

−High-Bandwidth Error Amplifier

−Full 0% to 100% Duty Ratio

• 3-Bit Digital-to-Analog Output Voltage Selection

• Over-Voltage and Over-Current Fault Monitors

• Small Converter Size

−200kHz Free-Running Oscillator

−Programmable from 50KHz to 800KHz

Applications

• High-Power 5V to 3.xV (or below) DC-DC Regu-

lators

• Low-Voltage Distributed Power Supplies

• VGA Card Power Regulation

The APW7016 provides a complete control and pro-

tection for a DC-DC converter optimized for high per-

formance microprocessor applications. It is designed

to drive two N-Channel MOSFETs in a synchronous-

rectified buck topology. The APW7016 integrates

output voltage control , monitoring and protection

functions into a single Package.

The APW7016 includes a 3-bit digital-to-analog con-

verter (DAC) that provides a easily adjustable and

precisely output voltage from 1.3VDC to 1.65VDC in

0.05V steps. Any selected output voltage can be

maintained within ±1% accuracy over temperature

and line voltage variations.

With a 200kHz free-running triangle-wave oscillator

and a error amplifier featuring a 15MHz unity-gain

bandwidth and 6V/us slew rate inside the chip ,

APW7016 can implement a simple , single feedback

loop , voltage-mode control topology with high tran-

sient performance.

The APW7016 also features with multiple protections

against over-current and over-voltage conditions by

inhibiting PWM operation. The APW7016 uses the

RDS(ON) of the upper MOSFET as the current sensing

element which eliminates the demend for an extra

component. The APW7016 also monitors the output

voltage using a comparator with hysteresis that tracks

the DAC output.

Pin Description

VSEN 1

OCSET 2

SS 3

VID0 4

VID1 5

VID2 6

COMP 7

FB 8

16 RT

15 VCC

14 LGATE

13 PGND

12 BOOT

11 UGATE

10 PHASE

9 GND

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise

customers to obtain the latest version of relevant information to verify before placing orders.

Copyright  ANPEC Electronics Corp.

1

Rev. A.2 - Oct., 2002

www.anpec.com.tw

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