DDR12 Series
DC-DC CONVERTERS
Tracking Dual Output
Dual output
1
NEW Product
•
High current dual-output power module for DDR memory
•
Single compact module provides 25 A @ 2.5 V for V
ddq
supply and 8 A @ 1.25 V for V
tt
termination
•
Tracking dual output voltages (1.25 V @ 8 A, 2.5 V @ 25 A)
•
Output voltage remote sense (only on V
ddq
)
•
Sink capability for logic terminations
•
Power good output signal
•
Overvoltage protection
•
Overcurrent protection
•
Remote ON/OFF
•
Available RoHS compliant
The dual output DDR12-25D08-AJ is specially designed to meet the power needs of
double data rate memory DIMMS and associated memory control logic. The V
tt
output tracks the V
ddq
output, while the V
tt
output can sink current as required by
logic terminations. This converter offers typical efficiencies greater than 84% when
operated at 50% load or greater. This model features a wide input range as well as
trimmable output voltages. Remote sense on V
ddq
and remote ON/OFF facilities are
included as standard, and the converter is protected against over-current and over-
voltage conditions.
All specifications are typical at nominal input, full load at 25 °C unless otherwise stated
2 YEAR WARRANTY
SPECIFICATIONS
OUTPUT SPECIFICATIONS - Vddq
Voltage adjustability
Output setpoint accuracy Using 1% trim resistors
Line regulation
Load regulation
Cross regulation
Temperature Co-efficient
Ripple and noise
(See Note 1)
Transient response
(See Note 2)
Overshoot
Undershoot
OUTPUT SPECIFICATIONS - Vtt
Tracking Accuracy
Ripple and noise
(See Note 1)
Transient response
(See Note 2)
INPUT SPECIFICATIONS
Input voltage range
Input current
Input current (max.)
Nominal 12 V
Minimum load
Remote OFF
(See Note 3)
10.8-13.2 Vdc
400 mA
20 mA
9 A max. @ Io max.
and Vin = 10.8 Vdc
Measured at Converter Pins
(=Vddq/2 - Vtt)
5 Hz to 20 MHz
8 A/1 µs
12 mV
5 Hz to 20 MHz
4 A/100 µs
Low line to high line
Minimum load to full load
2.32-2.75 Vdc
±2.5%
±0.1%
+0%/-1.0%
±0.4%
0.2 mV/ºC
50 mV pk-pk
±3.0% deviation
2.0% max.
150 mV max.
INPUT SPECIFICATIONS - Contd.
Input reflected ripple
Remote ON/OFF
Logic compatibility
ON
OFF
Start-up time
(See Note 5)
(See Note 4)
100 mA (pk-pk)
Open collector ref to -input
>2.0 Vdc
<0.8 Vdc
Power up
Remote ON/OFF
<20 ms
<20 ms
EMC CHARACTERISTICS
Electrostatic discharge
Conducted immunity
EN61000-4-2, IEC801-2
EN61000-4-2
GENERAL SPECIFICATIONS
Nominal output at turn-on
Efficiency
Switching frequency
(Fixed)
Approvals and
standards
Material flammability
Weight
MTBF
Telcordia SR-332
Vddq = 2.5 V
Vtt = 1.25 V
Vddq
Vtt
(See Note 7)
84% @ full load
300 kHz typ.
300 kHz typ.
IEC60950/EN60950
UL/cUL 1950/60950
UL94V-0
34 g (1.3 oz)
TBD hours
30 mV pk-pk
±3.0% deviation
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
Operating ambient,
temperature
Non-operating
0 °C to +80 °C
-40 °C to +125 °C
File Name: ddr12.pdf Rev: 04 Sept 2006
DDR12 Series
DC-DC CONVERTERS
Tracking Dual Output
OUTPUT
POWER
(MAX.)
69 W
11 W
10.8-13.2 Vdc
INPUT
VOLTAGE
OVP
3.6 Vdc
1.8 Vdc
OUTPUT
VOLTAGE
2.32-2.75 Vdc
1.16-1.375 Vdc
Dual output
2
NEW Product
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
OUTPUT
CURRENT
(MIN.)
1.5 A
0A
OUTPUT
CURRENT
(MAX)
25 A
8A
84%
EFFICIENCY
(TYP.)
LOAD
REGULATION
±1.0%
See Tracking Spec.
MODEL
NUMBER
(10,11)
DDR12-25D08-AJ
Notes
Measured as per recommended set-up. Cin = 270 µF (20 m
Ω
ESR max,
Cout = 3 x 560 µF (5 m
Ω
ESR max).
2
Vin =
12
Vdc, Tc =
25
°C, bounded by min/max load specification with
recommended system caps.
3
External input fusing is recommended.
4
Measured with external filter.
5
Start-up into resistive load.
6
Meets levels A and B conducted emissions with external components.
7
This product is only for inclusion by professional installers within other
equipment and must not be operated as a stand alone product.
8
Large value ceramic capacitor located close to the input pins is
recommended (TDK p/N C4532X7R1E106M).
9
Use of additional high quality ceramic output capacitors is recommended
in the end system.
10
TSE RoHS 5/6 (non Pb-free) compliant versions may be available on
special request, please contact your local sales representative for details.
11
NOTICE: Some models do not support all options. Please contact your
local Artesyn representative or use the on-line model number search tool
at http://www.artesyn.com/powergroup/products.htm to find a suitable
alternative.
1
PIN CONNECTIONS
PIN NO.
J1-1
J1-2
J1-3
J1-4
J1-5
J1-6
J1-7
J2-1
J2-2
J2-3
J2-4
FUNCTION
Power Good
Output Enable
Ground
Ground
12 V Input
12 V Input
12 V Input
V
tt
Ref
V
tt
V
tt
Ground
PIN NO.
J2-5
J2-6
J2-7
J2-8
J2-9
J2-10
J2-11
J2-12
J2-13
J2-14
J2-15
FUNCTION
Ground
Ground
Ground
Ground
V
ddq
Sense -
V
ddq
Sense +
V
ddq
V
ddq
V
ddq
V
ddq
V
ddq
PROTECTION
Short-circuit
Overvoltage
Overcurrent
Vddq
Vtt
Vddq
Vtt
Vddq
Vtt
Latching
Latching
Latching
Latching
Latching
Fold-back
CAUTION: Hazardous internal voltages and high temperatures.
Ensure that unit is not user accessible.
RECOMMENDED SYSTEM CAPACITANCE
Input capacitance
Output capacitance
(See Note 9)
(See Note 8)
Vddq
Vtt
10 µF/3 mΩ ESR max.
1680 µF/5 mΩ ESR max.
1680 µF/5 mΩ ESR max.
International Safety Standard Approvals
UL/cUL CAN/CSA 22.2
UL 60950 File No. E139421
TÜV Product Service (EN60950) Certificate No. B 02 12 19870 206
CB report and certificate to IEC60950
File Name: ddr12.pdf Rev: 04 Sept 2006
DDR12 Series
DC-DC CONVERTERS
Tracking Dual Output
Dual output
3
NEW Product
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
0.500
(12.67) Ref
0.260
(6.71)
3.000
(76.20)
0.062
(1.57) PCB
0.025
(0.64) TYP.
0.170
(4.39)
1.200
(30.48)
0.150
(3.81) Typ
0.050
(1.30) TYP.
J1
J2
PIN 1
PIN 7
PIN 1
0.025
(0.64) Typ
0.100
(2.54) Typ
PIN 15
0.250
(6.35)
1.100
(27.94)
Dimensions in Inches (mm)
Tolerances (unless otherwise specified)
2 Places
±0.02
(±0.51)
3 Places
±0.010
(±0.25)
Datasheet © Artesyn Technologies® 2005
The information and specifications contained in this datasheet are believed to be correct at time of publication. However, Artesyn Technologies accepts no responsibility for consequences arising
from printing errors or inaccuracies. Specifications are subject to change without notice. No rights under any patent accompany the sale of any such product(s) or information contained herein.
Please consult our website for the following items:
Application Note
Longform Data Sheet
www.artesyn.com
File Name: ddr12.pdf Rev: 04 Sept 2006
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