- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄69298 > PWR-82520R3-30O (DATA DEVICE CORP) BRUSHLESS DC MOTOR CONTROLLER, 4 A, DMA41 PDF資料下載
參數(shù)資料
| 型號： | PWR-82520R3-30O |
| 廠商： | DATA DEVICE CORP |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 4 A, DMA41 |
| 封裝： | DIP-41 |
| 文件頁數(shù)： | 9/13頁 |
| 文件大?。?/td> | 163K |
| 代理商： | PWR-82520R3-30O |
5
December 6, 1999 Data Device Corporation
P
PR
RE
EL
LIIM
MIIN
NA
AR
RY
Y
INTRODUCTION
The PWR-82520X is a 3-phase high performance current control
(torque loop) hybrid, which can provide true four-quadrant con-
trol through zero current. Its high Pulse Width Modulation (PWM)
switching frequency makes it suitable for operation with low
inductance motors. The PWR-82520X hybrid can accept single-
ended or differential mode command signals. The current gain
can be easily programmed to match the end user system
requirements. With the compensation network externally wired,
the hybrid can provide optimum control of a wide range of loads.
The PWR-82520X uses single point current sense technology
with a non-inductive hybrid sense resistor, which yields a highly
linear current output over the wide military temperature range
(see FIGURE 8). The output current non-linearity is better than
3% over the operating temperature range and the total error due
to all the factors such as offset, initial component accuracy etc.
is maintained well below 5% of the rated output current.
The Hall sensor interface for current commutation has built-in
decoder logic that separates illegal codes and ensures that there
is no cross conduction. The Hall sensor inputs are internally
pulled up to +5V and they can be driven from open-collector
outputs.
The PWM frequency can be programmed externally by adding a
capacitor from PWM OUT to PWM GND. In addition, multiple
PWR-82520X's can be synchronized by using one device as a
master and connecting its PWM OUT pin to the PWM IN of all
the other slave devices in a system or by applying a SYNC pulse.
The ENABLE input signal provides quick start and shutdown of
the internal PWM. In addition, built-in under voltage fault protec-
tion turns off the output in case of improper power supply volt-
ages.
The hybrid features dual current limiting functions. The input
command amplifier output is limited to ±5V, limiting the motor
current under normal operation. In addition, there is a cycle-by-
cycle current limit which kicks in to protect the hybrid as well as
the load (see TABLE 2 for limits).
VBUS
PHASE A
UPPER
PHASE A
LOWER
PHASE B
UPPER
PHASE B
LOWER
Rsense
PHASE A
PHASE B
PHASE C
-
+
OFF
ON
I
FIGURE 2A. COMPLEMENTARY 4-QUANDRANT DRIVE
FIRST HALF OF PWM CYCLE
BASIC OPERATION
The PW-82520X utilizes a complimentary four-quadrant drive
technique to control current in the load. The complimentary drive
has the following advantages over the standard drive:
1. Holding torque in the motor at zero commanded current
2. Linear current control through zero
3. No deadband at zero
4. Reduced power dissipation in the output MOSFETs
The complementary drive design uses a 50% PWM duty cycle
for a zero command signal. For a zero input command, a pair of
MOSFETs are turned on in the drive, Phase A upper & Phase B
lower as shown in FIGURE 2A, to supply current into the load for
the first half of the PWM cycle. This is the same mode of opera-
tion for the standard 4-quadrant drive as shown in FIGURE 3A/B.
During the second half of the PWM cycle, a second pair of tran-
sistors are turned on, Phase A lower & Phase B upper as shown
in FIGURE 2B, for the flyback current and to provide load current
in the opposite direction.
This is normally the dead time for standard 4-quadrant drive as
shown in FIGURE 3B. The result is current flowing in both direc-
tions in the motor for each PWM cycle. The advantage this has
over standard 4-quadrant drive is that at 50% duty cycle, which-
VBUS
PHASE A
UPPER
PHASE A
LOWER
PHASE B
UPPER
PHASE B
LOWER
Rsense
PHASE A
PHASE B
PHASE C
+
_
ON
OFF
I
FIGURE 2B. COMPLEMENTARY 4-QUANDRANT DRIVE
SECOND HALF OF PWM CYCLE
greater than 50% will result in a clockwise rotation whereas a
duty cycle less than 50% will result in a counter clockwise rota-
tion. Therefore, with the use of average current mode control,
direction can be controlled without the use of a direction bit and
the current can be controlled through zero in a very precise and
linear fashion.
The PW-82520X contains all the circuitry required to close an
average current mode control loop around a complimentary 4-
quadrant drive. The PWR-82520X use of average current mode
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PWR-82520R10-10O | BRUSHLESS DC MOTOR CONTROLLER, 14 A, DFM43 |
| PWR-82520R10-12O | BRUSHLESS DC MOTOR CONTROLLER, 14 A, DFM43 |
| PWR-82520N3-11O | BRUSHLESS DC MOTOR CONTROLLER, 4 A, DMA41 |
| PWR-82520R1-30O | BRUSHLESS DC MOTOR CONTROLLER, 1.5 A, DMA41 |
| PWR-82520N10-11O | BRUSHLESS DC MOTOR CONTROLLER, 14 A, DFM43 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PWR-82520R3-310 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Industrial Control IC |
| PWR-82520R3-320 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Industrial Control IC |
| PWR-8GHS | 制造商:MINI 制造商全稱:Mini-Circuits 功能描述:USB Smart Power Sensor |
| PWR-8GHS+ | 制造商:MINI 制造商全稱:Mini-Circuits 功能描述:USB Smart Power Sensor |
| PWRA 220A | 制造商:CROUZET CONTROL TECHNOLOGIES 功能描述:PHASE MONITORING RELAY, SPDT, 220VAC; Contact Configuration:SPDT; Phase Type:3 Phase; Power Consumption:3VA; Supply Voltage Max:220VAC; Switching Voltage Max:250VAC; Relay Mounting:Quick Connect |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。