6. Bill of Materials ................................................................................................................................................................ 9
7. Revision History ............................................................................................................................................................ 11
List of Figures
Figure 1: EM22xx Evaluation Board Overview (View From Top - EM2260 shown as an example) ..... 4
Figure 2: Jumper Table, Marked On The EM22xx Evaluation Board Silk Screen ....................................... 6
Figure 3: Evaluation Board Schematic – Power ......................................................................................................... 7
Figure 4: Evaluation Board Schematic – AUX ............................................................................................................. 8
Table 2: Bill of Materials...................................................................................................................................................... 9
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User Guide | Intel® Enpirion® Power Solutions
EM22xx Evaluation Board User Guide
1. Description
The EM22xx family are PowerSoC synchronous Dual Phase buck converters from the Intel®
Enpirion® Power Solutions family. The EM22xx series feature an advanced controller, gate
drivers, synchronous MOSFET switches, and high performance inductors. Only input and
output filter capacitors and a few small signal components are required for a complete
solution.
Differential remote sensing and ±0.5% set-point accuracy provide precise regulation over
line, load and temperature variation. Very low ripple further reduces accuracy uncertainty to
provide best in class static regulation for today’s FPGAs, ASICs, processors, and DDR
memory devices.
2. Required Equipment
Table 1: Required Equipment
Item # Equipment Recommended
1 DC Power Supply 20V/30A, adjustable
2 Electronic Load 50…100A with dynamic load capabilities
3 Intel Enpirion PMBus
Communication Interface Dongle
4 Intel 25A Mini Slammer Loads Fits the on-board LD1, LD2 & LD3 socket
5 DMM 6 ½ digit
6 Oscilloscope 4 channels, 0.5 GHz BW
7 Cables >60A capability, eyelet terminal, 4 mm
diameter hole, 10 mm outer diameter
3
3. Evaluation Board Overview
VOLTAGE
GROUND
User Guide | Intel® Enpirion® Power Solutions
EM22xx Evaluation Board User Guide
EM2260
PMBus
Communication
Interface Dongle
ENABLE
INPUT
Ferrite Beads
INPUT
OUTPUT
MONITOR
OUTPUT
DECOUPLING
OUTPUT
VOLTAGE
OUTPUT
VOLTAGE
SELECTOR
Figure 1: EM22xx Evaluation Board Overview (View From Top - EM2260 shown as an example)
OUTPUT
4
User Guide | Intel® Enpirion® Power Solutions
CAUTION:
Incorrect
polarity of the power supply may cause permanent
EM22xx Evaluation Board User Guide
4. Instructions
1) Connect the power supply
Set the Power Supply to 12V/10A.
Connect the power supply to the board (make sure that the power supply is OFF)
with two patch cables, not longer than 6 inches (15 cm). Using longer wires is possible,
provided that additional bulk is added to the board and the input voltage is
monitored at the board level. For lower Input voltages e.g. 5V further bulk
capacitance maybe required depending on the Power Supply being used. Please use
INPUT GROUND and INPUT VOLTAGE eyelet-terminated cables to connect the
power.
Please observe the correct polarity.
board damage!
CAUTION: Power supply voltage above 20V may cause permanent board
damage!
2) Connect the load
Connect the load to the OUTPUT GROUND and OUTPUT voltage with patch cables,
no longer than 6 inches (15 cm).
Please observe the correct polarity.
3) Check jumper settings
The board will arrive with one jumper on the J6 (enabling the Output through pulling
the CTRL pin high), one jumper on J14 (INT – this connects the on-board 5VCC supply)
and one jumper on J15 (PVIN_5V – this biases the 5V on board DC-DC converter). If
an auxiliary 5V power supply is needed (connected between J16 (+) and J17 (-)), J14
should be placed across the “EXT” position while J15 can be removed. If operating
PVIN at 6V or lower an external 5V supply is required to ensure correct operation.
(For PVIN values below 6V the on-board switcher cannot guarantee a 5Vout output)
4) Connect the PMBUS GUI interface dongle
The USB Dongle can be inserted only in the correct position, with pin one towards
GND. All pins must be properly inserted.
Prerequisite: the latest GUI software must be installed on a Windows PC.
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User Guide | Intel® Enpirion® Power Solutions
EM22xx Evaluation Board User Guide
5) Set the output voltage
Using the chart from the silkscreen, please select the desired output voltage, using
ONLY ONE switch ON. This setting will be read by the module when the part is
powered on; changing the resistor on the fly will not have any effect.
6) Power-up the board
After all preparations above, the board should be ready to perform.
The voltage range is marked on the board, as shown inFigure 2: