Intel Enpirion EM21 Series User manual

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User Guide
Intel® Enpirion® Power Solutions
EM21xx
Evaluation Board User Guide

User Guide | Intel® Enpirion® Power Solutions
EM21xx Evaluation Board User Guide
2
Contents
1. Description........................................................................................................................................................................ 3
2. Required Equipment..................................................................................................................................................... 3
3. Evaluation Board Overview........................................................................................................................................ 4
4. Instructions....................................................................................................................................................................... 5
5. Evaluation Board Schematic...................................................................................................................................... 7
6. Bill of Materials................................................................................................................................................................ 9
7. Revision History ............................................................................................................................................................12
List of Figures
Figure 1: EM21xx Evaluation Board Overview (View From Top - EM2130H shown as an example).. 4
Figure 2: “L” and “H” Jumper Table, Marked On The EM21xx Evaluation Board Silk Screen................ 6
Figure 3: Evaluation Board Schematic – Power......................................................................................................... 7
Figure 4: Evaluation Board Schematic – AUX............................................................................................................. 8
List of Tables
Table 1: Required Equipment........................................................................................................................................... 3
Table 2: Bill of Materials...................................................................................................................................................... 9

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EM21xx Evaluation Board User Guide
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1. Description
The EM21xx are a series of PowerSoC synchronous buck converters from the Intel® Enpirion®
Power Solutions family. The EM22xx series feature an advanced digital controller, gate
drivers, synchronous MOSFET switches, and a high performance inductor. Only input and
output filter capacitors and a few small signal components are required for a complete
solution. A PMBus™ version 1.2 compliant interface provides setup, control, and telemetry.
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 Load Fits the on-board LD1 socket
5 DMM 6 ½ digit
6 Oscilloscope 4 channels, 0.5 GHz BW
7 Cables >30A capability, eyelet terminal, 4 mm
diameter hole, 10 mm outer diameter

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EM21xx Evaluation Board User Guide
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3. Evaluation Board Overview
Figure 1: EM21xx Evaluation Board Overview (View From Top - EM2130H shown as an example)
ENABLE
ON/OFF
OUTPUT
OUTPUT
GROUND
INPUT
VOLTAGE
OUTPUT
DECOUPLING
OUTPUT
GROUND
PMBus
Communication
Interface Dongle
Connector
EM2130H
OUTPUT
MONITOR
OUTPUT
VOLTAGE
FERRITE
BEAD
OUTPUT
VOLTAGE
SELECTOR

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EM21xx Evaluation Board User Guide
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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 12 inches (30 cm). Using longer wires is
possible, provided that additional bulk is added to the board (the C45 through-hole
capacitor footprint is available for this purpose) and the input voltage is monitored
at the board level. Please use INPUT GROUND and INPUT VOLTAGE eyelet-
terminated cables to connect the power.
Please observe the correct polarity.
CAUTION: Incorrect polarity of the power supply may cause permanent
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 12 inches (30 cm).
Please observe the correct polarity.
3) Check jumper settings
The board will arrive with one jumper on the J6 (BUS – enabling control through
PMBUS), one jumper on J14 (INT – this enables the on-board 5V power supply) and
one jumper on J15 (AUX_PVIN – 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.
Although “TRACK” and “SYNC” use 100 mils headers, they are NOT to be shorted by
jumpers.
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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EM21xx Evaluation Board User Guide
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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 or by PMBus command; 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. If the GUI
interface dongle is not used, the jumper J6 should be moved to the “ON” position;
else the jumper J6 should be in the “BUS” position.
The voltage range (High/Low) is marked on the board, as shown in Figure 2:
Figure 2: “L” and “H” Jumper Table, Marked On The EM21xx Evaluation Board Silk Screen
For instruction on how to use the EM21xx GUI, please read “GUI User Guide.”
NOTE: To measure the Bode Plot of the DC-DC converter, R12 must be replaced with 50Ω resistor across which to inject
the signal, while TP18, TP20, TP8 and TP21 should be used to connect the probes of the phase analyzer.

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5. Evaluation Board Schematic
Figure 3: Evaluation Board Schematic – Power
V
V1
C29 10u
AGND
R7
DNI
+
C2
R5 10k
V
+
C18
DNI
R15
1k/0.1%
SALERT
C14
47U
PGND
C15
DNI
L7
28F0181-1SR-10
C20
47U
X2 MTHOLE
TP5
PGOOD
ADDR1
J6
1
2
3
5V
+C8
DNI
R3 1k
+
C7
DNI
R21 10k
J22
1
2
3
CHF4
470nF/25V LICC
SYNC
TP18
CONTROL
TP21
C47
22u
C12
47U
1.2V
R1
1k
R29
15.80k
R31
10.5k
R33
6.81k
J2 1
2
VCCSEN
R48 DNI
V7
R8
DNI
C46 22u
X3 MTHOLE
C60
100nF
1.0V
R9
1k
ADDR0
R17 2k/0.1%
TP10
SDA
VIN_F
C59
100nF
0.7V
+ C45
DNI
CTRL
SYNC
+ C24
C43
DNI
C31 DNI
S2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V4
C21
2.2uF/10V
SCL
C58
100nF
U1
EM21xx
AGND 70
NC68 68
VSENP 71
VSENN 72
VOUT 79
VOUT
3
VTRACK 77
ADDR1
7
VOUT 80
ADDR0
8
RTUNE
5
VOUT
2
VCCSEN 78
RVSET
4
SCL
15 SDA
14
PGND
32
VDD33
16 VCC 66
NC76 76
DGND 69
PWM
9
VOUT 81
VINSEN
6
VOUT
1
SMBALERT
13 CONTROL
12 PGOOD
11 SYNC
10
PGND
33
PGND
34
PGND
35
PGND
36
PGND
37
PGND
38
PGND
39
PGND
40
PGND
42
PGND
43
PGND
44
PGND
45
PGND
46
PGND
47
PGND
48
PGND
49
PGND
50
PGND
41
PGND
22
PGND
23
PGND
24
PGND
25
PGND
26
PGND
27
PGND
28
PGND
29
PGND
30
PGND
31
PGND 60
PGND 59
PGND 58
PGND 57
PGND 56
PGND 55
PGND 54
PGND 53
PGND 52
PGND 51
PVIN 61
PVIN 62
PVIN 63
PVIN 64
PVCC 65
NC67 67
NC75 75
NC74 74
NC73 73
PVIN
17
PVIN
18
PVIN
19
PVIN
20
PVIN
21
VOUT 100
VOUT 99
VOUT 98
VOUT 97
VOUT 96
VOUT 95
VOUT 94
VOUT 93
VOUT 92
VOUT 91
VOUT 90
VOUT 89
VOUT 88
VOUT 87
VOUT 86
VOUT 85
VOUT 84
VOUT 83
VOUT 82
PVIN_PAD 103
PGND_PAD
104
AGND_PAD 102
VOUT_PAD 101
R60 DNI
CHF2
470nF/25V LICC
Jum per: (PN: M50-1920005) http://ww w.digikey.com/product-detail/en/harwin-inc/M50-1920005/952-1727-ND/2890863 Heade r: (PN: GRPB031VWVN-RC) http://ww w.digikey.com/product-detail/en/sullins-connector-solutions/GRPB031VWVN-RC/S9014E-03-ND/1786439 Jum per 2: (PN: M50-2020005) http://ww w.digikey.com/product-detail/en/harwin-inc/M50-2020005/952-1729-ND/2890860
V8
TP17
PGND
X1 MTHOLE
C57
100nF
VDD3V3
PG
R35
2.43k
J8
1
2
3
C56
100nF
RVSET
PWM
L8
28F0181-1SR-10
C55
100nF
VDD3V3
C5 100u
R12
0R
+ C22
C4
DNI
R6
DNI
C54
100nF
R19 0R
R13
11k/0.1%
CHF5
0.9V
R11 0R
SMA
SMA1
PWM
5V
TP3
V6
AGND
C13
47U
TP8
C53
100nF
CHF7
470nF/25V LICC
+
C17
DNI
0.8V
CHF3
YFF21PC1E104MT00 (100nF/25V)
3
4
21
TP16
R22 3.3k
C52
100nF
C30 DNI
J3
1
2
3
R24 2k/ 0.1%
PVIN
V_CLEAN
Q1
2N7002
1
2
3
RTUNE
RTUNE
C51
100nF
C11
DNI
TP2
GND
R20 392R
R28
23.2k
V_OUT
R30
13.0k
R32
8.66k
J13 1
2
+ C40
J4
1
2
3
C3
DNI
PVIN
VTRACK
TP4
VSENN +
C19
DNI
R16 1k/0.1%
C32 DNI
TRACK
TP14
VIN
LD1
1
3
2
4
5
67
89
10 11
12 13
14 15
16
17
18
19
20
21
22
RTUNE
FB1
742792780
D1
A1
K
2
VTRACK
V3
VDD3V3
RVSET
1.12V
VTRACK1
R23 DNI
TP1
TP9
V2
C26 22u
V5
RVSET
C9
100u
C49
100nF
VOUT
VSENP
0.95V
GND
+ C23
100uF/20V TCJE107M020x0045
R34
3.74k
C27 22u
TP20
C10
100u
+
C6
470uF/2.5V/3mOhm
CTRL
R18 2k/0.1%
+
C16
DNI
X4 MTHOLE
C48
100nF
CHF6
0.85V
CHF1
470nF/25V LICC
C28 22u
J9
1
2
3
CHF8
470nF/25V LICC
V
C1 100U

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Figure 4: Evaluation Board Schematic – AUX
PVIN_5V R44
0R
C50
DNI
L1 22uH
NR6028T220MMGJ
C33
100pF
R38
90.9k
C34 0.1u
CTRL
C37 47u
C35 47u
GND
0
TP6
5V0_AUX
AVINO
R45 12.4k
R43
133k
EN5V
SCL
Tss = 1.41ms
0
TP19
5V
PGOOD
R42
3.32k
5V_EXT
PGOOD
0
R41 10k
5V Bias Supply 500mA
Ext_5V
R10 DNI
VDD3V3
R37 10k
BST5V
SDA
5V
C41 10u
5V
J17
SS5V
FB5V
TP7
C38
4.7nF
C39 470pF
C42
1u
R4
DNI
FSW5V
Fsw=700kHz
0
U2
ER3105QI
SS
1
SYNC
2
BOOT
3
PVIN
4
SW
5
PGND
6
FSW 12
COMP 11
FB 10
AVINO 9
POK 8
EN 7
EPAD
13
PMBUS
J21
12
34
56
78
910
5VSEL
J15
1
2
R40 100k
0
PVIN
J14
1
2
3
PM Bus Components
CMP5V
R2
DNI
0
SW5V
SALERT
GND
C36 47u
0
PVIN5V
0
POK5V
C44
10u
J16

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EM21xx Evaluation Board User Guide
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6. Bill of Materials
Table 2: Bill of Materials
Type
Description
Qty.
BOM Ref Des
Mfr. Name
Capacitor CAP CER 100UF 6.3V X5R
1206
4 C1,C5,C9,C10 Kemet
Capacitor CAP ALUM POLY 470UF 20%
2.5V
2 C2,C6 Panasonic
Capacitor CAP CER 47UF 6.3V X5R 1206 4 C12,C13,C14,C20 Murata
Capacitor CAP CER 2.2UF 16V 10% X6S
0402
1 C21 TDK
Capacitor CAP - POSCAP, 100UF, 20V,
ESR=55 mΩ
4 C22,C23,C24,C40 Panasonic
Capacitor CAP CER 22UF 25V 10% X5R
1206
5 C26,C27,C28,C46,C47 Murata
Capacitor CAP CER 10UF 25V 10% X5R
0805
3 C29,C41,C44 Murata
Capacitor CAP CER 100PF 50V 5% NP0
0402
1 C33 Taiyo Yuden
Capacitor CAP CER 0.1UF X7R 0402 10V
10%
1 C34 Murata
Capacitor CAP CER 47UF 6.3V X5R 0805 3 C35,C36,C37 Taiyo Yuden
Capacitor CAP CER 4.7NF X7R 0402 25V
10%
1 C38 Murata
Capacitor CAP CER 470PF 25V X7R 10%
0402
1 C39 Vishay
Capacitor CAP CER 1UF 25V 20% X5R
0402
1 C42 Taiyo Yuden
Capacitor CAP CER 0.47UF 25V 20% X7R
0612
7 CHF1,CHF2,CHF4,CHF5,
CHF6,CHF7,CHF8
Murata
Capacitor 22UF 6.3V 0805 FEED-
THROUGH (3 TERMINALS)
1 CHF3 TDK
LED LED GREEN CLEAR 0603 1 D1 LITE-ON INC
Inductor FERRITE BEAD 220 OHM 0402 1 FB1 Wurth
Electronik
Inductor INDUCTOR, 22UH, 1.3A, 1 L1 Taiyo Yuden

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EM21xx Evaluation Board User Guide
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Type
Description
Qty.
BOM Ref Des
Mfr. Name
Ferrite
Bead
Ferrite Bead, 115 ohm, 3318
[8545 Metric], 10 A, 1000
µohm
2 L7,L8 LAIRD
TECHNOLOGIES
Connector INTEL 25A SLAM LOAD
CONNECTOR
1 LD1 Samtec
MOSFET MOSFET N-CH 60V 300MA
SOT23
1 Q1 Fairchild
Resistor 1K 1% 0805 CHIP RESISTOR
1/8W
2 R1,R9 Panasonic
Resistor RES 1K OHM 1% 1/10W 0402 1 R3 Panasonic
Resistor RES 10K OHM 1/10W 1%
0402
4 R5,R21,R37,R41 Panasonic
Resistor RESISTOR ZERO OHM 1/10W
5% 0402
2 R11,R44 Panasonic
Resistor RES ZERO OHM 1/10W 5%
0603
2 R12,R19 Panasonic
Resistor RES 11K OHM 1/16W 0.1%
0402
1 R13 Susumu
Resistor RES 1K OHM 1/16W 0.1%
0402
2 R15,R16 Susumu
Resistor RES 2K OHM 1/16W 0.1%
0402
3 R17,R18,R24 Susumu
Resistor RES 390 OHM 1/16W 0.1%
0603
1 R20 Panasonic
Resistor RES 3.3K OHM 1/16W 1%
0402
1 R22 Panasonic
Resistor RES 23.2K OHM 1/10W 1%
0603
1 R28 Vishay Dale
Resistor RES - 15.8K,0603,1%, 1 R29 KOA Speer
Resistor RES 13K OHM 1/16W 1%
0603
1 R30 Yageo
Resistor RES - 10.5K OHM, 1%,1/10W,
0603
1 R31 Panasonic
Resistor RES 8.66K OHM 1/10W 1%
0603
1 R32 Panasonic