EN2342QI Datasheet, PDF (1/23 Pages) Altera Corporation – 4A PowerSoC Voltage Mode Synchronous PWM Buck with Integrated Inductor

Enpirion^® Power Datasheet
EN2342QI 4A PowerSoC
Voltage Mode Synchronous
PWM Buck with Integrated Inductor
Description
The EN2342QI 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 8x11x3mm
QFN module. It offers high efficiency, excellent line
and load regulation over temperature and up to the
full 4A load range. The EN2342QI 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
EN2342 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 Altera 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 Altera Enpirion
solution.
All Altera Enpirion products are RoHS compliant,
halogen free and are compatible with lead-free
manufacturing environments.
Features
• Integrated Inductor, MOSFETs, Controller
• Wide Input Voltage Range: 4.5V – 14V
• Guaranteed 4A I_OUT at 85°C with No Airflow
• Frequency Synchronization (External Clock)
• 1% Initial V_OUT Accuracy
• High Efficiency (Up to 95%)
• Output Enable Pin and Power OK signal
• Programmable Soft-Start Time
• Pin Compatible with the EN2340/60/62QI
• Under Voltage Lockout Protection (UVLO)
• Thermal Soft-Shutdown Protection
• Over Current 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
22nF
0.22 F
V_IN
22 F
1206
RVB
4.75k
F
ON
OFF
F
47nF
PG BTMP VDDB BGND
PVIN
VOUT
EN2342QI
ENABLE
AVINO
AVIN
VFB
SS
PGND
FQADJ AGND
PGND
RCLX
V_OUT
COUT
RA
CA
RCA
RB
RFS
RCLX
Figure 1. Simplified Application Circuit
Figure 2. Highest Efficiency in Smallest Solution Size
www.altera.com/enpirion
09520
February 21, 2014
Rev A