EV1380QI Datasheet, PDF (1/18 Pages) Enpirion, Inc. – 8a synchronous highly integrated dc-dc

Enpirion^® Power Datasheet
EV1380QI 8A PowerSoC
Highly Integrated Synchronous DC-DC
DDR2/3/4/QDR^TM Memory Termination
Description
The EV1380QI is a Power System on a Chip
(PowerSoC) DC to DC converter in a 68 pin QFN
that is optimized for DDR2, DDR3, and QDR^TM
VTT applications. It requires a power supply
(AVIN) for the controller and operates from an
input supply (VDDQ). It provides a tightly
regulated and very stable output voltage (VTT)
which tracks VDDQ while sinking and sourcing
up to 8A of output current. Altera Enpirion’s
integrated inductor technology significantly helps
to reduce noise, and offers a high efficiency
solution for VTT applications with a very low
external component count.
Advanced circuit techniques, optimized switching
frequency, and very advanced, high-density,
integrated circuit and proprietary inductor
technology deliver high-quality, ultra compact,
non-isolated DC-DC conversion.
The complete power converter solution enhances
productivity by offering greatly simplified board
design, layout and manufacturing requirements.
Features
 High efficiency, up to 94%.
 Output voltage tracks VDDQ +/- 1%
 Nominal 1.5MHz operating frequency with
ability to synchronize to an external clock
source or serve as the primary source.
 Programmable soft-start time. Soft Shutdown.
 Master/slave configuration for parallel
operation.
 Thermal shutdown, over current, short circuit,
and under-voltage protection.
 RoHS compliant, MSL level 3, 260C reflow.
Application
 Bus Termination: DDR2, DDR3, DDR4 &
QDR™ memory
V_CNTRL
V_DDQ
C_IN
R_C
R_D
SCHOTTKY
SW
VDDQ
VOUT
EV1380QI
ENABLE
AVIN
VFB
PGND
PGND
VREF
CSS
AGND FQADJ
C_AVIN
R_FS
V_TT
R₁
R_A ^RPD _COUT
C_A
R_B
Figure 2: Typical Application Schematic (V_DDQ is the
memory core voltage; V_TT is memory termination
voltage that tracks V_DDQ)
Figure 1: EV1380QI Total Solution Size ~200mm² (not
to scale). Does not show back-side components.
08888
March 18, 2015
www.altera.com/enpirion
Rev C