STEVAL-ISA067V1 STMICROELECTRONICS [STMicroelectronics], STEVAL-ISA067V1 Datasheet

STEVAL-ISA067V1

Manufacturer Part Number

STEVAL-ISA067V1

Description

Dual step-down controller with auxiliary voltages demonstration board based on the PM6681A for industrial system power

Manufacturer

STMICROELECTRONICS [STMicroelectronics]

Datasheet

1.STEVAL-ISA067V1.pdf (4 pages)

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Features

■

Description

This demonstration board is based on the

PM6681A, a dual step-down controller with

adjustable output voltages that can be used in

industrial power systems. The PM6681A

demonstration board allows testing all the

device's functions and provides two switching

sections, with (typically) 3.3 V (OUT1) and 1.8 V

(OUT2) outputs from 5.5 V to 36 V input voltage.

The typical operating switching frequency of the

two available sections is 200 kHz/300 kHz,

April 2009

For further information contact your local STMicroelectronics sales office.

5.5 V to 36 V input voltage range

voltage)

0.9 - 3.3 V adjustable LDO delivers 100 mA

peak current

5 V LDO delivers 100 mA peak current

1.237 V ± 1% reference voltage available

Loss-less current sensing using low-side

MOSFET R

Negative current limit

Soft-start internally fixed at 2 ms

Soft output discharge

Latched UVP

Non-latched OVP

Selectable pulse-skipping at light loads

Selectable minimum frequency (33 kHz) in

pulse-skip mode

4 mW maximum quiescent power

Independent power-good signals

Output voltage ripple compensation

RoHS compliant

out1

out2

Dual step-down controller with auxiliary voltages demonstration

: 3.3 V, I

: 1.8 V, I

DS(on)

board based on the PM6681A for industrial system power

out1

out2

> 2.5 A (or adjustable output

Doc ID 15643 Rev 1

respectively. Each switching section delivers more

than 2.5 A output current.

An internal linear regulator provides a fixed 5 V

output voltage. Another internal linear regulator

provides an adjustable output voltage (default 2.5

V). Both linear regulators can deliver up to 100

mA peak current.

STEVAL-ISA067V1

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Data brief

1/4

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STEVAL-ISA067V1 Summary of contents

Page 1

... The typical operating switching frequency of the two available sections is 200 kHz/300 kHz, April 2009 For further information contact your local STMicroelectronics sales office. STEVAL-ISA067V1 STEVAL-ISA067V1 respectively. Each switching section delivers more than 2.5 A output current. An internal linear regulator provides a fixed 5 V output voltage. Another internal linear regulator provides an adjustable output voltage (default 2 ...

Page 2

... Circuit schematic 1 Circuit schematic Figure 1. Schematic diagram 2/4 Doc ID 15643 Rev 1 STEVAL-ISA067V1 AM01437v1 ...

Page 3

... STEVAL-ISA067V1 2 Revision history Table 1. Document revision history Date 29-Apr-2009 Revision 1 Initial release. Doc ID 15643 Rev 1 Revision history Changes 3/4 ...

Page 4

... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 4/4 Please Read Carefully: © 2009 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Doc ID 15643 Rev 1 STEVAL-ISA067V1 ...

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