參數(shù)資料
型號(hào)： AMC8500
廠商： Electronic Theatre Controls, Inc.
英文描述： TWO PHASE VARIABLE SPEED FAN MOTOR CONTROLLER
中文描述： 兩相流變速風(fēng)扇電機(jī)控制器
文件頁(yè)數(shù)： 7/27頁(yè)
文件大小： 648K
代理商： AMC8500
P
P
Preliminary Specification
- 7 -
Andigilog, Inc. 2006
www.andigilog.com
August 2006 - 70A04018
aMC8500
INTRODUCTION
The aMC8500 is
functions for implementing a fan control system. Motor control features consists of a selectable slope pulse width modulator
(PWM) with double pulse suppression for efficient speed control that is compatible with an analog voltage or a varying duty
cycle digital pulse train, a programmable minimum speed set input, and an uncommitted op amp with a pinned out reference
for speed control signal scaling, Hall sensor amplifier with propriety noise immunity circuitry for proper drive sequencing,
non-overlapping commutation drive for reduced supply current spiking, on-chip 0.5
power MOSFETs for direct coil drive.
Protective and diagnostic features include an internal fault timer with auto start retry, motor kick start timer to insure proper
start up, programmable cycle-by-cycle current limiting, power supply under voltage lockout, and over temperature thermal
shutdown, and a combined frequency generator / rotor lock output for status reporting. Also included is a selectable
automatic low current power down mode aimed at power sensitive applications.
The aMC8500 is designed for use in thermal open or closed loop systems. It can be controlled by simple NTC or PTC
thermistors, Simistor silicon temperature sensors, or by complex digital or microcontroller based temperature monitors.
F
A representative block diagram is sho
features are given in the following sections. A complete list of the pin functions with a brief description is shown in Figure 33.
a full featured two phase half wave variable speed brushless motor controller containing all the required
UNCTIONAL DESCRIPTION
wn in Figure 13 and a detailed discussion on each of the functional blocks and
Non-Inverting
Input
Figure 13- Representative Block Diagram
Fault Timer
Power Down
Kick Start
Hall Amplifier
Non-Overlap
Commutation
Current Limit
Comparator
Motor
Drives
12 V
Op Amp
Oscillator
R
Min Speed
Comparator
PWM
Comparator
Digital
Detector
Thermal
Shutdown
Current
Limit
Latch
R
Q
S
16
1
12
15
14
10
6
9
8
7
5
11
13
2
PWM
Logic
10
μ
A
Hall +
Input 3
V
DD
Hall -
Input 4
Phase 1
Output
Phase 2
Output
Frequency
Generator /
Rotor Lock
Output
Power
Ground
Current
Limit
Set
Slope Select
Signal Ground
Speed Control
Input
Minimum
Speed Set
Input
Output
Inverting
Input
Reference
Output
Reference
Under Voltage
Lockout
H
N
S
N
M
S
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