Datasheet > AMC8520

AMC8520

更新时间： 2024-01-11 12:35:16

品牌	Logo	应用领域
其他 - ETC		风扇控制器
页数	文件大小	规格书
2页	85K
描述
SINGLE PHASE VARIABLE SPEED ADVANCED FAN CONTROLLER

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中文翻译

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数据手册

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AMC8520 数据手册

Preliminary Specification

aMC8520

SINGLE PHASE VARIABLE SPEED

ADVANCED FAN CONTROLLER

Product Description

The aMC8520 is a full featured single phase brushless DC

motor controller that contains all the required functions for an

economical closed loop motor control solution that fulfills the

balanced technology extended (BTX) requirements allowing

a significant reduction of acoustic noise generation. Unique

features of this device are a pulse width modulation (PWM)

speed control input that is compatible with industry standard

digital temperature monitors, thermistor input with adjustable

gain and minimum temperature response threshold for

temperature monitoring, programmable high and low

temperature maximum RPM, programmable minimum RPM,

current output error amplifier for easy control loop

compensation. Additional features include a latching PWM

for enhanced noise immunity, integrated fault timer with auto

start retry, adaptive motor start timer to insure start up,

combined frequency generator / rotor lock output, Hall

amplifier with propriety noise immunity circuitry for proper

drive sequencing, compatibility with differential non-buffered

and buffered sensors, pinned out reference for Hall and

circuit bias, fixed non-overlapping commutation delay for

reduced power supply current spiking, two 40 V open drain

top drivers, two 100 mA complementary MOSFET bottom

drivers, programmable cycle-by-cycle current limiting, under

voltage lockout and thermal shutdown protection, and an

internal shunt regulator for use with higher voltage motors.

Pin Configuration

Phase 1

Bottom Drive

Phase 2

Bottom Drive

Features

Phase 2

Top Drive

Phase 1

Top Drive

• PWM closed loop speed control compatible with industry

standard digital temperature monitors

Signal Ground

V_DD

• Thermistor input with adjustable gain and minimum

temperature response threshold

Reference

Output

V_DDriver

• Programmable high and low temperature maximum RPM

• Programmable minimum RPM

• Current output error amp for easy loop compensation

• Differential unbuffered and digital Hall compatibility with

propriety noise immunity circuitry

Current Sense

Input

Hall -

Hall +

Driver Ground

Signal Ground

aMC8520

• Integrated fault timer with auto start retry

• Adaptive motor start timer

• Combined frequency generator / rotor lock output

• Pinned out reference for Hall and circuit bias

• Fixed non-overlapping commutation delay

• Two 40 V open collector top drivers

• Two 100 mA complementary MOSFET bottom drivers

• Programmable cycle-by-cycle current limit protection

• Under voltage lockout and thermal shutdown protection

• Internal shunt regulator for higher voltage motors

Applications

Minimum RPM

Gain Amp

Output

High Temp

Maximum RPM

Freq. Generator

Rotor Lock

Output

Gain Amp

Input

Thermistor

Control Input

Actual RPM

Output

Control Loop

Compensation

PWM Control

Input

Low Temp

Maximum RPM

Required RPM

Output

• PC, workstation and mainframe fans

• Telecom, LAN server fans and blowers

• Industrial control and instrumentation fans

Ordering Information

Part Number

Package

Operating Junction Temperature Range

Marking

aMC85020QS24

-40°C to 150°C

aMC8520

24-lead QSOP

- 1 -

www.andigilog.com

April 2007 - 70A06005

中文翻译

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