Datasheet

DC/DC converter
Panel Mode
Bi-directional switch
SM72445
SM72295
Curr.
Sense amp.
Comparator
Temp. sensor
PV
Panel
LOAD
PWM signal
Gate Drive
Current
sense
Input
Current
sense
Input voltage
sense
Output voltage
sense
Protection trigger
Out current sense
Protection
trigger
SM72445 Evaluation Module Design Specification www.ti.com
Figure 1. Evaluation Board Simplified Diagram
3 SM72445 Evaluation Module Design Specification
Symbol Parameter Min Typ Max
V
MPP
PV Module MPP Voltage 15 Vdc 40Vdc
P
MPP
PV Module Power 10 W 350 W
V
OC
PV Module Open Circuit Voltage 50 Vdc
I
SC
PV Module Short-Circuit Current 11A
V
OUT
Output Voltage 0 Vdc 43 Vdc
I
OUT
Output Current 12.5A
OVP Overvoltage Protection Threshold 45V
OTP Overtemperature Protection Threshold 125
o
C
MPP
EFF
MPP Efficiency 98.5%
PM
EFF
Panel-Mode Efficiency 99.5%
Configuration Modes
The SM72445 is configured through I2C communication or through resistor settings on pin A0, A2, A4 and
A6. The default configuration setting on the board is:
Pin name Pin Voltage Description
A0 3.0V “Soft” output voltage limit of 40V (AVOUT=3V)
A2 0V 220kHz operation, uses dedicated FET switch for higher efficiency
A4 5.0V Internal current protection not used
A6 1.56V Long slew rate limit, 60s in a 1:1 conversion ratio at start-up before enabling
optimization
2
AN-2241 SM72445 Evaluation Board SNVA649A–May 2012–Revised May 2013
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