Technical Reference Notes
APC12 Centauri II
Centauri II (APC12) Non-Isolated DC/DC Power Module
Tiny SMT Footprint – 1.8V-12V Input, 0.9V to 3.6V Output
PRELIMINARY
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.
Industry Standard
0.63” x 1.3” x 0.29H SMT
Electrical Parameters
Input
Input range
Input Surge
Efficiency
1.8-6.0VDC and 6.0-13.0VDC
14V
3.3V @ 93.4% (Typical @ 10A)
92.3% (Typical @ 12A)
Control
Enable TTL compatible (Positive Logic)
Output
Regulation
(Line, Load, Temp)
Ripple and noise
Output voltage
adjust range
Transient Response
Special Features
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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)
<3%
75mV - (≥2.5V Output)
≥
50mV - (<2.5V Output)
0.9V to 3.6V (J Version)
typical 5% deviation
with 50% to 75% step
load 200 µS recovery
Environmental Specifications
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Operating temperature: -40°C to +85°C
Storage temperature: -40°C to +125°C
MTBF: >1 million hours
Safety
Designed to meet:
UL, cUL
60950 Recognized (Pending)
TUV
EN60950 Licensed (Pending)
MODEL: APC12 SERIES
JANUARY 6, 2002 REVISION A (PRELIMINARY)
SHEET 1 OF 23
ASTEC [ Astec America, Inc ]
