參數(shù)資料
型號(hào)： PWR-82520R3-100
廠商： DATA DEVICE CORP
元件分類： 運(yùn)動(dòng)控制電子
英文描述： BRUSHLESS DC MOTOR CONTROLLER, 8 A, PDMA41
封裝： HYBRID, DIP-41
文件頁(yè)數(shù)： 17/20頁(yè)
文件大?。?/td> 187K
代理商： PWR-82520R3-100
6
INTRODUCTION
The PWR-82520R is a, radiation hardened, 3-phase high per-
formance current control (torque loop) hybrid, which provides
true four-quadrant control through zero current. Its high Pulse
Width Modulation (PWM) switching frequency makes it suitable
for operation with low inductance motors. The PWR-82520R
hybrids can accept either single-ended or differential mode com-
mand signals. The current gain can be easily programmed to
match the end user system requirements. The addition of an
externally wired compensation network provides the user with
optimum control of a wide range of loads.
The PWR-82520R uses single point current sense technology
with an internal non-inductive hybrid sense resistor (RSENSE),
which yields a highly linear current output over the wide -55°c to
+125°c military temperature range. The output current non-lin-
earity is less than 1.5% and the total error due to all the factors
such as offset, initial component accuracy etc. is maintained well
below 3% of the full scale rated output current.
The Hall sensor interface for current commutation has built-in
decoder logic that ignores illegal codes and ensures that there is
no cross conduction. The Hall sensor inputs are internally pulled
up to +5V and can be driven from open-collector outputs
The PWM frequency can be programmed externally by adding a
capacitor from PWM OUT to PWM GND. Multiple PWR-
82520R's can be synchronized in two ways: 1) by using one
device as a master and connecting its PWM OUT pin to the
PWM IN of all the other slave devices, or 2) by applying a mas-
ter SYNC pulse from an external source to the PWM IN pins on
all devices to be synchronized.
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 ICL TABLE 2 for limits).
BASIC OPERATION AND ADVANTAGES
The PWR-82520R utilize a complementary four-quadrant drive
technique to control current in the load. The complementary
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
The complementary drive design produces a 50% PWM duty
cycle in response to a zero current command. During a zero cur-
rent command the benefit of a complementary 4 quadrant drive
over a standard 4 quadrant is shown in the following figures
(FIGURES 2A, 2B, 3A, and 3B).
PWR-82520R
Data Device Corporation
www.ddc-web.com
相關(guān)PDF資料
PDF描述
PWR-82520R10-190 BRUSHLESS DC MOTOR CONTROLLER, 20 A, PDFM43
PWR-82520R3-130 BRUSHLESS DC MOTOR CONTROLLER, 8 A, PDMA41
PWR-82520R3-190 BRUSHLESS DC MOTOR CONTROLLER, 8 A, PDMA41
PWR-82520R3-200 BRUSHLESS DC MOTOR CONTROLLER, 8 A, PDMA41
PWR-82520R10-100 BRUSHLESS DC MOTOR CONTROLLER, 20 A, PDFM43
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