KIT33730EKEVBE Evaluation Board
, Rev. 1.0
Freescale Semiconductor
5
Using Hardware
4
Using Hardware
This EVB consists of a MC33730 switching power supply, power conditioning circuitry, and a set of Input
Select Jumpers. MC33730 Circuit.
4.1
LED Display
Seven LED's are provided as visual output devices for the MC33730 EVB board. A list of the LED devices
is shown below:
1. VDDH LED - Indicates when VDDH supply is operating.
2. VDDL LED - Indicates that the VDDL supply is operating.
3. VDD3 LED - Indicates that the VDD3 supply is operating.
4. VREF1 LED - Indicates that the VREF1 reference is operating.
5. VREF2 LED - Indicates that the VREF2 reference is operating.
6. IGN LED - Indicates Battery supplied to Vign.
7. IGNSW LED - Indicates that the VDD3 supply is operating.
4.2
Selection Jumper Definitions
The EVB contains four jumpers that provide certain selections for the MC33730 as follows (Bold = default
factory setting):
4.2.1
P1, P2, P3 Jumpers
The P1, P2, and P3 jumpers are used to determine what voltage levels will be supplied by the VDD3,
VDDL and VKAM supplies. The pins are used to hardwire the settings with the MC33730 reading the
values at startup. The table below shows the various conditions that can be set.
P1
P2
P3
VDD3
VDDL
VKAM
High
High
High
3.3V
2.6V
2.6V
High
High
Low
3.3V
3.3V
3.3V
High
Low
High
3.3V
1.5V
1.0V
High
Low
Low
3.3V
3.3V
1.0V
Low
High
High
3.3V Standby
3.3V
1.0V
Low
High
Low
2.0
3.15V
5.0V
Low
Low
High
2.6V Standby
3.3V
1.0V
Low
Low
Low
2.6V Standby
3.3V
1.5V
