DDR12 Series
Dual output
DC-DC CONVERTERS Tracking 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
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supply and 8 A @ 1.25 V for V termination
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Tracking dual output voltages (1.25 V @ 8 A, 2.5 V @ 25 A)
Output voltage remote sense (only on V )
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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
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output tracks the V output, while the V output can sink current as required by
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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 and remote ON/OFF facilities are
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included as standard, and the converter is protected against over-current and over-
voltage conditions.
2 YEAR WARRANTY
All specifications are typical at nominal input, full load at 25 C unless otherwise stated
SPECIFICATIONS
OUTPUT SPECIFICATIONS - V INPUT SPECIFICATIONS - Contd.
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Voltage adjustability 2.32-2.75 Vdc Input reflected ripple (See Note 4) 100 mA (pk-pk)
Output setpoint accuracy Using 1% trim resistors 2.5% Remote ON/OFF
Logic compatibility Open collector ref to -input
Line regulation Low line to high line 0.1%
ON >2.0 Vdc
OFF <0.8 Vdc
Load regulation Minimum load to full load +0%/-1.0%
Start-up time Power up <20 ms
Cross regulation 0.4%
(See Note 5) Remote ON/OFF <20 ms
Temperature Co-efficient 0.2 mV/C
EMC CHARACTERISTICS
Ripple and noise 5 Hz to 20 MHz 50 mV pk-pk
(See Note 1) Electrostatic discharge EN61000-4-2, IEC801-2
Conducted immunity EN61000-4-2
Transient response 4 A/100 s 3.0% deviation
(See Note 2)
GENERAL SPECIFICATIONS
Overshoot Nominal output at turn-on 2.0% max.
Efficiency V = 2.5 V 84% @ full load
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V
Undershoot 150 mV max. tt = 1.25 V
Switching frequency V 300 kHz typ.
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OUTPUT SPECIFICATIONS - V (Fixed) V 300 kHz typ.
tt tt
Tracking Accuracy Measured at Converter Pins 12 mV Approvals and (See Note 7) IEC60950/EN60950
(=V /2 - V )
standards UL/cUL 1950/60950
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Ripple and noise 5 Hz to 20 MHz 30 mV pk-pk
Material flammability UL94V-0
(See Note 1)
Weight 34 g (1.3 oz)
Transient response 8 A/1 s 3.0% deviation
(See Note 2) MTBF Telcordia SR-332 TBD hours
INPUT SPECIFICATIONS ENVIRONMENTAL SPECIFICATIONS
Input voltage range Nominal 12 V 10.8-13.2 Vdc Thermal performance Operating ambient, 0 C to +80 C
temperature
Input current Minimum load 400 mA
Non-operating -40 C to +125 C
Remote OFF 20 mA
Input current (max.) (See Note 3) 9 A max. @ Io max.
and Vin = 10.8 Vdc
File Name: ddr12.pdf Rev: 04 Sept 2006DDR12 Series
Dual output
DC-DC CONVERTERS Tracking Dual Output 2
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
NEW Product
OUTPUT OUTPUT OUTPUT
INPUT OUTPUT EFFICIENCY LOAD MODEL
POWER OVP CURRENT CURRENT
(10,11)
VOLTAGE VOLTAGE (TYP.) NUMBER
REGULATION
(MAX.) (MIN.) (MAX)
69 W 3.6 Vdc 2.32-2.75 Vdc 1.5 A 25 A 1.0%
10.8-13.2 Vdc 84% DDR12-25D08-AJ
11 W 1.8 Vdc 1.16-1.375 Vdc 0 A 8 A See Tracking Spec.
NNootteess
PIN CONNECTIONS
1 Measured as per recommended set-up. Cin = 270 F (20 m ESR max,
PIN NO. FUNCTION PIN NO. FUNCTION
Cout = 3 x 560 F (5 m ESR max).
2 Vin = 12 Vdc, Tc = 25 C, bounded by min/max load specification with
J1-1 Power Good J2-5 Ground
recommended system caps.
3 External input fusing is recommended.
J1-2 Output Enable J2-6 Ground
4 Measured with external filter.
5 Start-up into resistive load.
J1-3 Ground J2-7 Ground
6 Meets levels A and B conducted emissions with external components.
7 This product is only for inclusion by professional installers within other
J1-4 Ground J2-8 Ground
equipment and must not be operated as a stand alone product.
8 Large value ceramic capacitor located close to the input pins is
J1-5 12 V Input J2-9 V Sense -
recommended (TDK p/N C4532X7R1E106M).
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9 Use of additional high quality ceramic output capacitors is recommended
J1-6 12 V Input J2-10 V Sense +
in the end system.
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10 TSE RoHS 5/6 (non Pb-free) compliant versions may be available on
J1-7 12 V Input J2-11 V
special request, please contact your local sales representative for details.
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11 NOTICE: Some models do not support all options. Please contact your
J2-1 V Ref J2-12 V
local Artesyn representative or use the on-line model number search tool
tt ddq
at