IRDCIP1001-A International Rectifier, IRDCIP1001-A Datasheet

IRDCIP1001-A

Manufacturer Part Number

IRDCIP1001-A

Description

CONV SGL PHA SYNC BUCK 3.3-4.5V

Manufacturer

International Rectifier

Series

iPOWIR™r

Datasheets

1.IP1001TR.pdf (18 pages)

2.IRDCIP1001-A.pdf (6 pages)

3.IRDCIP1001-A.pdf (1 pages)

Specifications of IRDCIP1001-A

Main Purpose

DC/DC, Step Down

Outputs And Type

1, Non-Isolated

Voltage - Output

Current - Output

20A

Voltage - Input

3.3 ~ 4.5V

Regulator Topology

Buck

Frequency - Switching

200kHz

Board Type

Fully Populated

Utilized Ic / Part

iP1001

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Power - Output

Lead Free Status / Rohs Status

Not Compliant

Other names

*IRDCIP1001-A

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Overview

In this document, Table 1 and Figure 1 are provided to enable engineers to

easily evaluate the iP1001 in a single phase configuration that is capable of

providing up to 20A in a lab environment without airflow. Figures 3, 4, 5 and

6 and the complete bill of materials in Table 2 are provided as a reference

design to enable engineers to very quickly and easily design a single phase

converter. In order to optimize this design to your specific requirements,

refer to the iP1001 data sheet for guidelines on external component selection

and user adjustable limits and specifications. Custom designs may require

layout modifications.

Demoboard Quick Start Guide

Initial Settings:

Procedure for Connecting and Powering Up Demoboard:

1. Apply input voltage (3.3V-4.5V) across V

2. Apply load across VOUT pad and PGND pad.

3. Make sure Jumpers JP2 and JP3 are connected.

4. Remove jumper JP1 to turn on the boost circuit and pull iP1001 ENABLE pin high. The ENABLE pin is controlled via switch

5. Adjust load accordingly.

IRDCiP1001-A Recommended Operating Conditions

(refer to the iP1001 datasheet for maximum operating conditions)

Input voltage:

Output voltage:

Output current:

Switching Freq:

provided in order to provide the 5V

up to 5 x iP1001 devices simultaneously.

8 on SW1. This pin is supplied in low state, once pulled high the output is enabled.

The output is set to 2V, but can be adjusted from 0.925V to 2.0V by

setting SW1 according to the VID codes provided in Table 1. The output voltage can also be adjusted to allow up to

2.5V

be removed for output voltages below 2V, and R3 should be set to zero ohms (see Table 2).

The switching frequency is centered around 200kHz for <5V

The input voltage range can be increased to allow operation between 5V

design documentation for direction on changing the configuration of the demo board.

IRDCiP1001-A, 200kHz, 20A, 3.3V

OUT

EFERENCE

for 3.3V

International Rectifier

Synchronous Buck Converter using iP1001

Up to 20A depending on duty factor (refer to recommended operating area Fig.1).

3.3 - 4.5V (V

DAC selectable between 0.925V - 2.0V (with extended operating range to 3.3V with R3 & R4)

200kHz or 300kHz selectable.

, by adding R3 & R4 with the DAC set to 2V

provided by mini boost circuit)

internal logic for the iP1001. This boost circuit can be used to provide power for

•

233 Kansas Street, El Segundo, CA 90245 USA

and PGND. Note that this demo board has a mini-boost circuit

ESIGN

09/11/02

ESIGN

OUT

applications with the FREQ pin connected to V

. Refer to equation 1 for R3 & R4 values. R4 should

to 4.5V

and 12V

IRDCiP1001-A

OUT

. Refer to IRDCiP1001-B reference

OUT

IRDCiP1001-A Demoboard

Single Phase

Operatng Conditions

0.925V

3.3V

Min

See Fig.1

Max

4.5V

2.5V

Related parts for IRDCIP1001-A

IRDCIP1001-A Summary of contents

Page 1

... R R EFERENCE EFERENCE International Rectifier IRDCiP1001-A, 200kHz, 20A, 3.3V Synchronous Buck Converter using iP1001 Overview In this document, Table 1 and Figure 1 are provided to enable engineers to easily evaluate the iP1001 in a single phase configuration that is capable of providing up to 20A in a lab environment without airflow. Figures and ...

Page 2

... IRDCiP1001 Fig Recommended Operating Area Shutdown : Upon receipt of the shutdown code (per VID code table above), both FETs are turned OFF and the output is discharged as it enters UVP fault mode. For output voltages above the DAC maximum setting of 2V, refer to Equation 1 below to calculate the required resistor values for R3 & ...

Page 3

... This paper explains how to use the Power Loss and SOA curves in the data sheet to validate if the operating conditions and thermal environment are within the Safe Operating Area of the iPOWIR product. www.irf.com T = 25°C A 3.3Vin, 2.5Vout, 200KHz 3.3Vin,1.8Vout, 200KHz 5 10 Output Current (A) IRDCiP1001 ...

Page 4

... IRDCiP1001 OUT 2 7 LBI LBO GND 4 5 REF SHDN C19 MAX1675 0.1µF JP3 R8 100K TP1 TP3 SW1 + 340K Optional L2 C17 C18 22µH 10µF 10µF C20 1µF JP2 3.3-4.5V VIN JP1 100uF 100uF 100uF 6.3V 6.3V 6.3V + 1.06uH VSW C11 C12 ...

Page 5

... Fig Component Placement (Top View) Fig Component Placement (Bottom View) www.irf.com IRDCiP1001-A 5 ...

Page 6

... IRDCiP1001-A IRDCiP1001-A (For operation <4.5V Designator Value C1, C3, C5 100uF C2, C4, C6, C7, C8, C9, C10, C15 - C11, C12, C13, C14 470uF C16, C19 0.100uF C17, C18 10.0uF C20 1.00uF C21 47.0pF D1 40V JP1, JP2, JP3 - JP1-1, JP2-1, JP3 1.06uH L2 22uH 340k R8 100k R9 91k ...

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