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iP2003A

Features:

T

Synchronous Buck

Multiphase Optimized LGA Power Block

Integrated Power Semiconductors, Drivers & Passives

Description

The iP2003A is a fully optimized solution for high current synchronous buck multiphase applications.

Board space and design time are greatly reduced because most of the components required for each

phase of a typical discrete-based multiphase circuit are integrated into a single 9mm x 11mm x 2.2mm

power block. The only additional components required for a complete multiphase converter are a PWM

controller, the output inductors, and the input and output capacitors.

iPOWIR technology offers designers an innovative board space saving solution for applications

requiring high power densities. iPOWIR technology eases design for applications where component integration

offers benefits in performance and functionality. iPOWIR technology solutions are also optimized internally for

layout, heat transfer and component selection.

iP2003A Power Block

10/19/05

iP2003A Internal Block Diagram

ENABLE

PWM

MOSFET

Driver with

dead time

control

V

IN

V

SW

PGND

PRDY

V

DD

V

SWS2

V

SWS1

MOSFET

Driver with

dead time

control

V

IN

V

SW

PGND

PRDY

V

DD

V

SWS2

V

SWS1

Pin #

Pin Name

Pin Function

1

Supply voltage for the internal circuitry.

2

ENABLE

W hen set to logic level high, internal circuitry

of the device is enabled. W hen set to logic

level low, the PRDY pin is forced low, the

Control and Sychronous switches are turned

off, and the supply current reduces to 10µ A.

3

PW M

TTL-level input signal to M OSFET drivers.

4

PRDY

Power Ready - This pin indicates the status of

is less than 4.4V (typ.). W hen ENAB LE is

this output is driven high. This output has a

10mA source and 1mA sink capability.

5, 7

PGND

Power Ground - connection to the ground of

bulk and filter capacitors.

6

Switching Node - connection to the output

inductor.

8

Input voltage pin. External bypass ceramic

capacitors must be added directly next to the

block.

9

Floating pin. For internal use. Externally, short

10

Floating pin. For internal use. Externally, short

PD-96987A