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
•
•
•
•
•
•
•
•
•
•
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
•
•
•
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
Technical Reference Notes
APC12 Centauri II
APC12 Centauri II SERIES
THIS SPECIFICATION COVERS THE REQUIREMENTS
For A New 1.3" X 0.63" X 0.38”(H), 12A Single Output High Efficiency Non-Isolated SMT DC-DC Converter
Vin nominal/
Vin range
3.3V / 1.8-6.0V
3.3V / 1.8-6.0V
3.3V / 1.8-6.0V
3.3V / 1.8-6.0V
3.3V / 2.2-6.0V
3.3V / 3.0-6.0V
5.0V / 4.2-6.0V
8V / 5.6-13.0V
8V / 5.6-13.0V
8V / 5.6-13.0V
8V / 5.6-13.0V
8V / 5.6-13.0V
8V / 5.6-13.0V
8V / 6.0-13.0V
MODEL NAME
APC12J03
APC12J03-9
1
APC12K03
APC12M03
APC12Y03
APC12G03
APC12F03
APC12J08
APC12J08-9
1
APC12K08
APC12M08
APC12Y08
APC12G08
APC12F08
Base Model
With output trim
Base Model
Base Model
Base Model
Base Model
Base Model
Base Model
With output trim
Base Model
Base Model
Base Model
Base Model
Base Model
Vout/Iout
0.9V, 12A
0.9V, 12A
1.2V, 12A
1.5V, 12A
1.8V, 12A
2.5V, 12A
3.3V, 12A
0.9V, 12A
0.9V, 12A
1.2V, 12A
1.5V, 12A
1.8V, 12A
2.5V, 12A
3.3V, 12A
Notes: 1. “J” (0.9V) version has a stand alone Output Trim Option (suffix “-9”)
2. Options (suffix):
"-9MA" = Trim with Power Good and Active Current Share
"-J"
= Tray packaging
MODEL: APC12 SERIES
JANUARY 6, 2002 REVISION A (PRELIMINARY)
SHEET 2 OF 23
Technical Reference Notes
APC12 Centauri II
Electrical Specifications
STANDARD TEST CONDITION
on a single unit, unless otherwise specified.
T
A
:
25°C (Ambient Air)
Forced Airflow 200LFM minimum
V
IN
(P1):
Nominal input (refer to Table in sheet 2)
Enable (P5):
Open
Vo (P2):
Connect to load
Gnd (P3):
Return for Vin and Vo
Trim (P4):
Open
PGood (P6):
Open
P (P7):
Open
ABSOLUTE MAXIMUM RATINGS
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. Functional operation
of the device is not implied at these or in any other conditions in excess of those given in the operational sections of
the specs. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability.
Parameter
Input Voltage
Continuous
Transient (100ms)
Continuous
Transient (100ms)
Operating Temperature
Storage Temperature
Operating Humidity
Device
03
03
08
08
All
All
All
Symbol
V
IN
V
IN,trans
V
IN
V
IN,trans
T
A
T
STG
-
Min
1.8
-
5.6
-
-40
-40
-
Typ
-
-
-
-
-
-
-
Max
6.0
7.0
13.0
14.0
85
125
85
Unit
Vdc
Vdc
Vdc
Vdc
ºC
ºC
%
INPUT SPECIFICATIONS
Parameter
Operating Input Voltage
1
Device
03
08
APC12F08
All
All
Symbol
V
IN
Min
1.8
5.6
6.0
-
-
Typ
3.3
8.0
8.0
-
250
Max
6.0
13.0
13.0
14.0
300
Unit
Vdc
Vdc
Vdc
A
mAp-p
Maximum Input Current
2
(V
IN
= 0 to V
IN,max
; I
O
= I
O,max
)
Input Ripple Current
5Hz to 20MHz
I
IN,max
I
IN-1
Note: 1. Minimum V
IN
(03 device) for 1V8, 2V5 and 3V3 versions are 2V2, 3V and 4.2V respectively. Minimum
V
IN
(08 device) for 3V3 is 6.0V.
2. This power module is not internally fused. The use of an input line fuse is recommended.
MODEL: APC12 SERIES
JANUARY 6, 2002 REVISION A (PRELIMINARY)
SHEET 3 OF 23
Technical Reference Notes
APC12 Centauri II
Electrical Specifications
(continued)
OUTPUT SPECIFICATIONS
Parameter
Output Voltage Setpoint
V
IN
= V
IN, min
to V
IN, max
at
I
O
=I
O,max
Device
0.9V
1.2V
1.5V
1.8V
2.5V
3.3V
All
Symbol
V
O,SET
V
O,SET
V
O,SET
V
O,SET
V
O,SET
V
O,SET
-
-
-
-
-
I
O
-
-
I
O
-
η
η
η
η
η
η
η
η
η
η
η
η
-
Min
0.873
1.164
1.455
1.746
2.425
3.200
-
-
-
-
-
0
0
-
-
-
-
73
80
83
86
88
90
71
75
79
80
85
88
Typ
0.900
1.200
1.500
1.800
2.500
3.300
-
-
-
-
-
-
-
-
-
20
-
76
81
86
87
90
92
73
77
81
82
87
90
Max
0.927
1.236
1.545
1.854
2.575
3.400
0.5
1.0
±1.5
75
50
12
12
3000
100
-
-
79
84
89
90
93
94
74
79
83
84
89
91
200
-
-
65
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
%
%
%
mV
PK-PK
mV
PK-PK
A
A
µF
mΩ
A
-
%
%
%
%
%
%
%
%
%
%
%
%
kHz
ms
Output Regulation
Line: V
IN
= V
IN, min
to V
IN, max
Load: I
O
= I
O, min
to I
O, max
Temp: T
A
= -40 ºC to +85ºC
Output Ripple and Noise
3
Peak-to-Peak: 5 Hz to 20 MHz
Output Current
External Load Capacitance
Capacitor ESR
Output Current-limit Inception
4
Output Short-circuit Current
5
Efficiency
V
IN
= 1.8V to 6V
1
I
O
= 12A Resistive Load
≥2.5V
<2.5V
All
3V3
All
All
All
J03
K03
M03
Y03
G03
F03
J08
K08
M08
Y08
G08
F08
All
All
V
IN
= 5.6V to 13V
1
I
O
= 12A Resistive Load
Switching Frequency
Turn-On Time (Input to Output)
6
I
O
= I
O,max
; V
IN
= V
IN,nom
MODEL: APC12 SERIES
JANUARY 6, 2002 REVISION A (PRELIMINARY)
SHEET 4 OF 23
Technical Reference Notes
APC12 Centauri II
Electrical Specifications
(continued)
OUTPUT SPECIFICATIONS
(continued)
Parameter
Dynamic Response:
Slew Rate
Load Change: 50% - 75% I
O,max
Peak Deviation Settling Time
to V
O,nom
Load Change: 50% - 25% I
O,max
Peak Deviation Settling Time
to V
O,nom
Device
All
All
All
All
All
Symbol
∆I
O
/∆t
-
-
-
-
Min
-
-
-
-
-
Typ
0.1
5
100
5
100
Max
-
10
200
10
200
Unit
A/µs
%V
O
µs
%V
O
µs
Output Voltage Overshoot
All
-
-
5
-
%Vo
Passive Resistive Full Load
Note:
3. Ripple specs are specified at 56uF decoupling capacitance for 03 devices and 100uF for 08 devices.
4. This feature is only for module protection and is not intended for customer application. The value is
specified at 25°C ambient air temperature. Operation outside the power-derating curve may result to an
OCP.
5. Pulse train with 90ms period and 1 ms pulse width. Average I
OUT
equals about zero.
6. Input to Output Turn-on time is defined as the difference between t1 and t2: where t1 is the time when
the input voltage reaches the minimum V
IN
(V
IN
= V
IN,min
) and t2 is the time when the output voltage
reaches its specified range (V
O
= V
O,SET-MIN
).
FEATURE SPECIFICATION
Parameter
Output Voltage Adjustment Range
7
Module Parallel Capability
V
IN
= V
IN,min
to V
IN,max
at
I
O-TOT
= (I
O,max
)/(60%)
Current Sharing to be within:
Power Good
8
Open Collector: max sink current
max pull-up voltage
Output Enable
9
Open Collector TTL compatible
Module ON: Logic High
Module OFF: Logic Low
Collector Current
Note:
Device
-9 opt
-9MA opt
Symbol
-
-
Min
V
O
V
O
Typ
-
-
Max
3.6
3.6
Unit
V
V
-9MA opt
All
All
-
40
-
-
-
-
-
60
5
6
%I
O-TOT
mA
V
All
All
All
4.1
0
-
-
-
-
14
0.8
60
Vdc
Vdc
µA
7. Single resistor adjustment or single resistor plus a voltage source adjustment. Refer to sheet 9 for
recommendations on how to trim the output voltage.
8. Refer to Figure 6 for the PGood configuration.
9. Refer to Figure 3 for the Output Voltage Enable configuration.
SHEET 5 OF 23
MODEL: APC12 SERIES
JANUARY 6, 2002 REVISION A (PRELIMINARY)
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