參數(shù)資料
型號(hào)： PWR-82520R3-140
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)： 18/20頁(yè)
文件大?。?/td> 187K
代理商： PWR-82520R3-140
7
Data Device Corporation
www.ddc-web.com
PWR-82520R
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-QUADRANT DRIVE
DRIVE FIRST HALF OF PWM CYCLE
VBUS
PHASE A
UPPER
PHASE A
LOWER
PHASE B
UPPER
PHASE B
LOWER
Rsense
PHASE A
PHASE B
PHASE C
+
_
ON
OFF
I
During the first half of the PWM cycle, one pair of MOSFETs
(Phase A upper & Phase B lower) are turned on, to supply cur-
rent into the load as shown in FIGURE 2A.
VBUS
PHASE A
UPPER
PHASE A
LOWER
PHASE B
UPPER
PHASE B
LOWER
Rsense
PHASE A
PHASE B
PHASE C
-
+
OFF
ON
I
VBUS
PHASE A
UPPER
PHASE A
LOWER
PHASE B
UPPER
PHASE B
LOWER
Rsense
PHASE A
PHASE B
PHASE C
+
_
OFF
I
Flyback
FIGURE 3A. STANDARD 4 QUADRANT DRIVE
FIRST HALF OF PWM CYCLE
FIGURE 3B. STANDARD 4 QUADRANT DRIVE
SECOND HALF OF PWM CYCLE
FIGURE 2B. COMPLEMENTARY 4-QUADRANT DRIVE
SECOND HALF OF PWM CYCLE
During the first half of the PWM cycle the Standard 4 Quadrant
Drive operation in FIGURE 3A is identical to the Complementary
4 Quadrant Drive shown in FIGURE 2A.
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, to provide load current in the opposite direction.
Current flowing in both directions results in, zero average current
in the motor that provides a holding torque.
During the second half of the PWM cycle this drive operates in
dead time where the motor current continues to flow (I Flyback)
in the same direction through the power device diodes for stan-
dard 4-quadrant drive as shown in FIGURE 3B.
This results in an average current flow through the motor in one
direction, producing in a net torque in one direction.
相關(guān)PDF資料
PDF描述
PWR-82520R3-160 BRUSHLESS DC MOTOR CONTROLLER, 8 A, PDMA41
PWR-82520R3-300 BRUSHLESS DC MOTOR CONTROLLER, 8 A, PDMA41
PWR-82520R1-160 BRUSHLESS DC MOTOR CONTROLLER, 3 A, PDMA41
PWR-82520R1-100 BRUSHLESS DC MOTOR CONTROLLER, 3 A, PDMA41
PWR-82520R10-120 BRUSHLESS DC MOTOR CONTROLLER, 20 A, PDFM43
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