EN2390QI Datasheet, PDF (1/21 Pages) Enpirion, Inc. – 9A Voltage Mode Synchronous Buck PWM

EN2390QI
Preliminary Datasheet
9A Voltage Mode Synchronous Buck PWM
DC-DC Converter with Integrated Inductor
2Description
The EN2390QI is a Power System on a Chip
(PowerSoC) DC-DC converter. It integrates MOSFET
switches, small-signal control circuits, compensation
and an integrated inductor in an advanced
11x10x3mm QFN module. It offers high efficiency,
excellent line and load regulation over temperature.
The EN2390QI operates over a wide input voltage
range and is specifically designed to meet the precise
voltage and fast transient requirements of high-
performance products. The EN2390 features
frequency synchronization to an external clock, power
OK output voltage monitor, programmable soft-start
along with thermal and over current protection. The
device’s advanced circuit design, ultra high switching
frequency and proprietary integrated inductor
technology delivers high-quality, ultra compact, non-
isolated DC-DC conversion.
The Enpirion solution significantly helps in system
design and productivity by offering greatly simplified
board design, layout and manufacturing
requirements. In addition, overall system level
reliability is improved given the small number of
components required with the Enpirion solution.
All Enpirion products are RoHS compliant and lead-
free manufacturing environment compatible.
Features
• Integrated Inductor, MOSFETS, Controller
• Total Solution Size Estimate: 235mm²
• Wide Input Voltage Range: 4.5V – 14V
• 2% V_OUT Accuracy (Over Line/Load/Temperature)
• Frequency Synchronization (External Clock)
• Output Enable Pin and Power OK Signal
• Programmable Soft-Start Time
• Under Voltage Lockout Protection (UVLO)
• Programmable Over Current Protection
• Thermal Shutdown and Short Circuit Protection
• RoHS compliant, MSL level 3, 260^oC reflow
Applications
• Space Constrained Applications
• Distributed Power Architectures
• Output Voltage Ripple Sensitive Applications
• Beat Frequency Sensitive Applications
• Servers, Embedded Computing Systems,
LAN/SAN Adapter Cards, RAID Storage Systems,
Industrial Automation, Test and Measurement,
and Telecommunications
Figure 1. Simplified Applications Circuit (Footprint Optimized)
Sim Efficiency vs. Output Current
100
90
80
70
60
50
40
30
VOUT = 3.3V
CONDITIONS
20
VOUT = 1.8V
V_IN = 12.0V
AVIN = 3.3V
10
VOUT = 1.2V
Dual Supply
0
0123456789
OUTPUT CURRENT (A)
Figure 2. Highest Efficiency in Smallest Solution Size
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