EP5352QI Datasheet, PDF (7/18 Pages) Altera Corporation – 500/600/800mA PowerSoC Synchronous Buck Regulators With Integrated Inductor

EP5382QI/EP5362QI/EP5352Q I
Detailed Description
Functional Overview
The EP53x2QI family is a complete DCDC
converter solution requiring only two low cost
MLCC capacitors. MOSFET switches, PWM
controller, Gate-drive, compensation, and
inductor are integrated into the tiny 5mm x
4mm x 1.1mm package to provide the smallest
footprint possible while maintaining high
efficiency and high performance. The converter
uses voltage mode control to provide the
simplest implementation and high noise
immunity. The device operates at a 4 MHz
switching frequency. The high switching
frequency allows for a wide control loop
bandwidth providing excellent transient
performance. The 4 MHz switching frequency
enables the use of very small components
making possible this unprecedented level of
integration.
Altera Enpirion’s proprietary power MOSFET
technology provides very low switching loss at
frequencies of 4 MHz and higher, allowing for
the use of very small internal components, and
very wide control loop bandwidth. Unique
magnetic design allows for integration of the
inductor into the very low profile 1.1mm
package. Integration of the inductor virtually
eliminates the design/layout issues normally
associated with switch-mode DCDC
converters. All of this enables much easier
and faster integration into various applications
to meet demanding EMI requirements.
Output voltage is chosen from seven preset
values via a three pin VID voltage select
scheme. An external divider option enables
the selection of any voltage in the 0.6 to V_IN -
V_dropout. This reduces the number of
components that must be qualified and
reduces inventory problems. The VID pins can
be toggled on the fly to implement glitch free
dynamic voltage scaling.
Protection features include under-voltage lock-
out (UVLO), over-current protection (OCP),
short circuit protection, and thermal overload
protection.
Integrated Inductor
Altera has introduced the world’s first product
family featuring integrated inductors. The
EP53x2QI family utilizes a low loss, planar
construction inductor. The use of an internal
inductor localizes the noises associated with
the output loop currents. The inherent shielding
7
www.altera.com/enpirion
03132
October 11, 2013
Rev H