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DM330021 Fiches technique(PDF) 8 Page - Microchip Technology

No de pièce DM330021
Description  dsPIC33CK256MP508 Motor Control Plug-In Module (PIM) Information Sheet for Internal Op Amp Configuration
PDF  12 Pages
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Fabricant  MICROCHIP [Microchip Technology]
Site Internet  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

DM330021 Fiches technique(HTML) 8 Page - Microchip Technology

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dsPIC33CK256MP508
DS50002756A-page 8
 2018 Microchip Technology Inc.
Table 4 classifies the passive components according to
their functionality and also quotes the design equations
applicable in each case.
Op Amp 1, as seen in Figure 3, is not used by default. If
the filter, bias and feedback circuit section are popu-
lated, and configured by software, it can be used to
amplify the IBUS current. Prior to using Op Amp 1, the
resistor jumpers, R23, R24, R25, R26, should be
removed to enable IBUS current to use the Op Amp 1
inputs. As a result, this limits the Power Factor Correc-
tion (PFC) functionality in the case of MCHV-2 or Field
Oriented Control (FOC) on Inverter B of the Low-Voltage
Motor Control Development Bundle.
TABLE 4:
ANALOG FUNCTIONALITY LISTING
Op Amp #
Analog Function
Passive Components
Design Equations
1
Low-Pass Filter
R15, R16, R17, R18, C14,
C15, C16
R15 = R16 = R17 = R18 = R
C14 = C16 = C
R10 = R11
Reference Voltage Bias
R19, R20, R21, R22
Voltage Divider
R20, R21
Differential Amplifier
Input
R15, R16, R17, R18
Differential Amplifier
Feedback
R22
2
Low-Pass Filter
R1, R2, R3, R4, C8, C9, C10 R1 = R2 = R3 = R4 = R
C8 = C110 = C
R5 = R6
Reference Voltage Bias
R5, R6
Differential Amplifier
Input
R1, R2, R3, R4
Differential Amplifier
Feedback
R6
3
Low-Pass Filter
R8, R9, R10, R11, C11,
C12, C13
R8 = R9 = R10 = R11 = R
C11 = C13 = C
R12 = R13
Reference Voltage Bias
R12, R13
Differential Amplifier
Input
R8, R9, R10, R11
Differential Amplifier
Feedback
R13
Common-mode
f – 3 dB 
1
2
RC
Differential-mode
f – 3 dB 
1
2
R)
Differential Amplifier Gain =
R22
2R
C
2
+ C15
()
Common-mode
f – 3 dB 
1
2
RC
Differential-mode
f – 3 dB 
1
2
R)
Differential Amplifier Gain =
R6
2R
C
2
+ C9
()
Common-mode
f – 3 dB 
1
2
RC
Differential-mode
f – 3 dB 
1
2
R)
Differential Amplifier Gain =
R13
2R
C
2
+ C12
()



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