Environmental Engineering Reference
In-Depth Information
Boost Converter with
Voltage Reference MPPT
Energy
Storage
Regulating Buck
Converter
Hybrid Energy
Harvesting Source
I
pv
2.8 V
V
o
SYNC
V
IN
SW
L
100 mH
+
10 µH
R
s
D
pv
D
NMOS
Si1563DH
Super
Cap
0.1 F
5.5 V
Wireless
Sensor
Node
TI
CC2500
I
L
22 pF
RUN
LTC1877
1 MΩ
I
TH
V
FB
PWM
470 kΩ
-
GND
I
TEG
R
s,TEG
D
TEG
MAX4036
V
Ropt
V
oc
+
-
+
-
d
18 kΩ
LTC 6 906
V
LMC7215
Pulses
-
+
OUT
V
fb
V
err
V
mppt
180 kΩ
-
PI
Controller
+
DIV
GND
1 MΩ
15 nF
4.7 µF
SET
Microcontroller TI
MSP430F2274
(Low Power Mode, 100 Hz)
PWM Generation (10 kHz)
FIGURE 5.28
Functional block diagram of an HEH system.
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