Technical Reference Notes

APC12 Centauri II

MODEL: APC12 SERIES

SHEET 1 OF 23

JANUARY 6, 2002 REVISION A (PRELIMINARY)

Centauri II (APC12) Non-Isolated DC/DC Power Module

Tiny SMT Footprint – 1.8V-12V Input, 0.9V to 3.6V Output

The APC12 Centauri II series is Astec’s recent addition to its non-isolated SMT POL line. With the wide

acceptance of it’s predecessor (APC08 series) and the continuous system requirement for higher load current, the

Centauri platform have been revolutionized to provide 12A load current from it’s original 8A device. The APC12

offers the same standard features common to the Centauri Product Line: wide input voltage range; wide output

voltage range; high efficiency; Positive Output Enable; Power Good signal and Current Sharing. It also adapts the

same Centauri SMT footprint for optimum user flexibility and multiple sourcing.

The APC12 also comes with an output Trim pin, which allows output adjustment from 0.9V to 3.6V through

external resistance programming. It works from a wide input voltage range of 1.8V to 13V and offers an extensive

array of output voltages starting from 0.9V to 3.6V. It is ideal for Point of Load applications and provides the most

flexibility for the ever-changing DSP and ASIC power requirements.

Electrical Parameters

Input

Input range

1.8-6.0VDC and 6.0-13.0VDC

Input Surge

14V

Efficiency

3.3V @ 93.4% (Typical @ 10A)

92.3% (Typical @ 12A)

Control

Enable TTL compatible (Positive Logic)

Output

Regulation

(Line, Load, Temp)

<3%

Ripple and noise

75mV - (

≥≥≥≥2.5V Output)

50mV - (<2.5V Output)

Output voltage

adjust range

0.9V to 3.6V (J Version)

Transient Response

typical 5% deviation

with 50% to 75% step

load 200 µS recovery

Special Features

•

Point of Load (POL) applications

•

High efficiency, 3.3V@94% (25%-75% Load)

•

Open Frame SMT

•

Remote On/Off (Positive Enable)

•

Low output ripple and noise

•

Regulation to zero load

•

Programmable Output from 0.9V to 3.6V

•

Fixed frequency switching (200 KHz)

•

Power Good Signal (Optional)

•

Active Current share (Optional)

Safety

Designed to meet:

UL, cUL

60950 Recognized (Pending)

TUV

EN60950 Licensed (Pending)

Industry Standard

0.63” x 1.3” x 0.29H SMT

Environmental Specifications

•

Operating temperature: -40°C to +85°C

•

Storage temperature: -40°C to +125°C

•

MTBF: >1 million hours

PRELIMINARY