EcoSpeed DC-DC Converters Product Brochure0 pages

Product Overview
SEMTECH

POWER

MANAGEMENT

EcoSpeed® DC-DC Converters:

Best-in-Class Performance for Dynamic
Point-of-Load Applications
Unique buck converter platform provides ultra-fast transient response and
high efficiency across the entire load range.
Description

The EcoSpeed® converter platform incorporates Semtech’s
patented(1) adaptive on-time (AOT) control architecture to
deliver:
•t Very high efficiency across the entire load range
•t Ultra-fast transient response
•t Easy-to-use, small and highly integrated DC-DC converters
This unique architecture offers the benefits of conventional
converter topologies with optimal tradeoffs for best-in-class
performance in next-generation dynamic point-of-load
applications.
These buck converters are inherently well suited to implement
a reduced frequency power-save (PSAVE) mode for up
to 95% peak efficiency in light load conditions, with the
option of ultrasonic PSAVE mode for applications requiring
no audible resonance during power save.
Semtech’s EcoSpeed converters minimize output capacitance,
eliminate the need for external compensation components
and enable the use of ceramic input/output capacitors to
provide a simple, space-saving and low-cost solution.

Key Features
•t Patented adaptive on-time control architecturet
t - Ultra-fast transient responsett
t - Pseudo-fixed switching frequency typically ±15%
t accuracy
t - Programmable switching frequency: 200kHz to 1MHz
t - Very high efficiency across the entire load range
t - No external compensation components required
t - Up to 95% peak standby efficiency
•t Power save (PSAVE) maximizes light load efficiency
•t Wide input voltage range: 3V to 28Vttt
•t Output current range: 1A to 30Attt
•t SmartDrive™ technology reduces EMI
•t Low profile MLPQ and MLPD packages

VOUT = 0.50V to 5.25V,
IOUT up to 10A

BST

3 to 28V
VIN

VOUT
LX

5V

ILIM

VDD

SC417

FB

Can be VLDO
if VIN > 4.5V
VOUT Enable,
PSAVE Select
VLDO Enable

EN/PSV

PGOOD
VLDO

ENL

VLDO = 0.75V to 5.25V,
ILDO up to 150mA

FBL

TON

(1) U.S. Patent No. 7,714,547

VOUT
Power Good

PGND

AGND

W W W .SE MTE C H .C OM