DataSheeT
Intel® Enpirion® Power Solutions
EM2120x01QI 20A PowerSoC
Step-Down DC-DC Switching Converter with Integrated Inductor, Featuring
Digital Control with PMBus
TM
v1.2 Compliant Interface
Description
The EM2120 is a fully integrated 20A PowerSoC
synchronous buck converter. It features 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 provides 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.
The EM2120 may be used in standalone mode or
utilizing the PMBus interface for a high degree of
flexibility and programmability. Advanced digital
control techniques ensure stability and excellent
dynamic performance, and eliminate the need for
external compensation components. The PC-based
Intel Enpirion Digital Power Configurator provides a
user-friendly and easy-to-use interface to the device
for communication and configuration.
The EM2120 features high conversion efficiency and
superior thermal performance to minimize thermal
de-rating limitations, which is key to product
reliability and longevity.
Features
•
•
•
•
•
Integrated inductor, FETs, and digital controller
Wide 4.5V to 16V V
IN
range
0.7V to 5V V
OUT
range
20A continuous current with no thermal de-rating
High efficiency in 11mm x 17mm x 6.76mm QFN
package
o
95% efficiency at V
IN
= 5V, V
OUT
= 3.3V
o
90% efficiency at V
IN
= 12V
,
V
OUT
= 1.2V
Optimized total solution size of only 365 mm
2
Meets all high-performance FPGA requirements
o
Digital loop for best in class transient response
o
0.5% set-point over line, load, and temperature
o
Output ripple as low as 10 mV peak-peak
o
Differential remote sensing
o
Monotonic startup into pre-bias output
o
Optimized FPGA configs stored in NVM
Programmable through PMBus™
o
V
OUT
margining, startup and shutdown delays
o
Programmable warnings, faults and response
Ability to operate without PMBus™
o
RVSET resistor for programmable V
OUT
o
RTUNE resistor for single resistor compensation
Tracking pin for complex sequencing
RoHS compliant, MSL level 3, 260°C reflow
•
•
•
•
•
•
Applications
•
High performance FPGA supply rails
•
ASIC and processor supply rails
•
High density double data rate (DDR) memory
VDDQ rails
Page 1
13149
June 21,2018
Rev F
Data Sheet | Intel Enpirion Power Solutions: EM2120
Pin Description
Table 2
PIN
1,2,3,
79-101
NAME
VOUT
I/O
Regulated
Output
FUNCTION
Regulated output voltage. Decouple to PGND with appropriate filter capacitors
A resistor from RVSET to AGND; and can be used to program the V
OUT
set-point.
Using 1% tolerance or better resistor. See
4
RVSET
Analog
I/O
Table 8
and
Table 9
for more information.
A resistor from RTUNE to AGND; and can be used to tune the transient
compensator for the amount of output capacitance. Using 1% tolerance or better
resistor. See
Table 10
and
5
RTUNE
Analog
I/O
Table
11
for more information.
6
7
8
9
10
11
12
13
14
15
16
17-21,
61-64,
103
22-60,
104
65
VINSEN
ADDR1
ADDR0
PWM
SYNC
POK
CTRL
SALRT
SDA
SCL
VDD33
PVIN
PGND
PVCC
Analog
Input
Analog
I/O
Analog
I/O
PWM
Digital I/O
Digital I/O
Digital
Input
Digital
Output
Digital I/O
Digital
Input
Output
Input
Supply
Ground
Input
Supply
Single-ended input voltage sense (relative to AGND).
A resistor from ADDR1 to AGND; and can be used to set the PMBus™ address. Use
a 1% tolerance or better resistor.
A resistor from ADDR0 to AGND; and can be used to set the PMBus™ address. Use
a 1% tolerance or better resistor.
PWM signal test pin.
PWM synchronization signal
Power OK is selectable as a push-pull output or an open drain transistor for
power system state indication. See the Power OK description for details
PMBus-compatible control pin with programmable functionality. CTRL should
never be left floating if enabled in Configuration. The default configuration is for
V
OUT
to be on with CTRL high (positive edge)
PMBus™ alert line.
PMBus™ serial data I/O.
PMBus™ serial clock input.
3.3V output of the internal LDO. May be used as pull-up supply for PMBus™ pins
and CTRL pin.
Input supply for MOSFET switches. Decouple to PGND with appropriate filter
capacitors. Refer to Recommended Application Circuit section for more details.
Power ground. Ground for MOSFET switches.
5.0V supply voltage for driver circuitry. Decouple to PGND using a 2.2µF MLCC
high quality ceramic capacitor.
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Data Sheet | Intel Enpirion Power Solutions: EM2120
PIN
66
67,68,
73-76
69
70, 102
71
72
NAME
VCC
NC
DGND
AGND
VSENP
VSENN
I/O
Input
Supply
NC
Ground
Ground
Analog
Input
Analog
Input
Analog
Input
Analog
Input
FUNCTION
5.0V supply voltage for analog circuitry.
No connect. Do not connect to any signal, supply, or ground.
Digital ground. Connect to AGND pin directly.
Analog ground. Connect to system ground plane. Refer to layout section for more
details on grounding.
Differential output voltage sense input (positive).
Differential output voltage sense input (negative).
Voltage tracking reference input if EM2120 is configured for voltage tracking
mode. May remain floating if not used.
If enabled but not used, connect to
VDD33 using a 10kΩ resistor.
VTRACK is not enabled in the default
configuration.
Single-ended VCC voltage sense (relative to AGND)
77
VTRACK
78
VCCSEN
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June 21,2018
Rev F
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