Microchip Technology dsPIC33EP128GS806, User Manual

Page: 12 / 24

dsPIC33EP128GS806 Digital Power PIM User’s Guide
DS50002761A-page 12

2018 Microchip Technology Inc.
Figure 1-2 and Figure 1-3 show measuring procedure examples for plant and
closed-loop measurements.
FIGURE 1-2: MEASURING PROCEDURE FOR PLANT MEASUREMENT
FIGURE 1-3: MEASURING PROCEDURE FOR CLOSED-LOOP
MEASUREMENT
Power Stage
PWM
V
OUT
V
IN
Nominal
Duty Ra
Ɵ
o
Output
+
Signal Injec
ƟŽŶ
ADC1
ADC2
–
ADC/2
Remove O
ī
set!
Out
Bode 100
In
DAC2
DAC1
Bode 100
Generator
1.65V
50R
CH2
CH1
V
Ê—›
G = 2
sƒÃÖ
= 1.65V + 2 x
sÊ—›
Power Stage
PWM
V
OUT
V
IN
Compensator
Output
Bode 100
Generator
Out
Bode 100
In
1.65V
Signal
Injec
ƟŽ
n
ADC2
–
ADC/2
Remove O
īƐ
et!
Min/Max
Clamp
Reference
ADC1
+
DAC2
DAC1
50R
CH2
CH1
V
Ê—›
sƒÃÖ = 1.65V + 2 x sÊ—›