Datasheet

ManualsBrandsDELTA ELECTRONICS ManualsPSU ComponentsDC/DC converter (SMD) 5.5 Vdc 3 A 17 W No. of outputs: 1 x

DATASHEET

DS_DCT12S0A0S03NFA_11142013

FEATURES

 High efficiency: 94. 9% @ 12Vin, 5V/3A out

 Small size and low profile:

 12.2x 12.2x 7.45mm (0.48”x 0.48”x 0.293”)

 Surface mount packaging

 Standard footprint

 Voltage and resistor-based trim

 Pre-bias startup

 Output voltage tracking

 No minimum load required

 Output voltage programmable from

0.59Vdc to 5.0Vdc via external resistor

 Fixed frequency operation

 Input UVLO, output OCP

 Remote on/off

 ISO 9001, TL 9000, ISO 14001, QS9000,

OHSAS18001 certified manufacturing

facility

 UL/cUL 60950-1 (US & Canada)

 CE mark meets 73/23/EEC and 93/68/EEC

directives

APPLICATIONS

 Telecom / DataCom

 Distributed power architectures

 Servers and workstations

 LAN / WAN applications

 Data processing applications

OPTIONS

 Negative/Positive on/off logic

 Tracking feature

Delphi DCT, Non-Isolated Point of Load

DC/DC Power Modules: 4.5~14Vin, 0.59-5.0V/3Aout

The Delphi Series DCT, 4.5-14V input, single output, non-isolated

Point of Load DC/DC converters are the latest offering from a world

leader in power systems technology and manufacturing -- Delta

Electronics, Inc. The DCT series provides a programmable output

voltage from 0.59 V to 5.0V using an external resistor and has flexible

and programmable tracking features to enable a variety of startup

voltages as well as tracking between power modules. This product

family is available in surface mount and provides up to 3A of output

current in an industry standard footprint. With creative design

technology and optimization of component placement, these

converters possess outstanding electrical and thermal performance,

as well as extremely high reliability under highly stressful operating

conditions.

Summary of content (20 pages)

PAGE 1
FEATURES  High efficiency: 94. 9% @ 12Vin, 5V/3A out  Small size and low profile:  12.2x 12.2x 7.45mm (0.48”x 0.48”x 0.293”)  Surface mount packaging  Standard footprint  Voltage and resistor-based trim  Pre-bias startup  Output voltage tracking  No minimum load required  Output voltage programmable from 0.59Vdc to 5.
PAGE 2
TECHNICAL SPECIFICATIONS (TA = 25°C, airflow rate = 300 LFM, Vin =4.5Vdc and 14Vdc, nominal Vout unless otherwise noted.) PARAMETER NOTES and CONDITIONS DCT12S0A0S03NFA Min. ABSOLUTE MAXIMUM RATINGS Input Voltage (Continuous) Sequencing Voltage Operating Ambient Temperature Storage Temperature INPUT CHARACTERISTICS Operating Input Voltage Input Under-Voltage Lockout Turn-On Voltage Threshold Turn-Off Voltage Threshold Lockout Hysteresis Voltage Maximum Input Current No-Load Input Current (VIN = 12.
PAGE 3
CHARACTERISTICS CURVES The following figures provide Converter Efficiency versus output current Figure 1: Converter efficiency vs. output current (5.0Vout) Figure 2: Converter efficiency vs. output current (3.3Vout) Figure 3: Converter efficiency vs. output current (2.5Vout) Figure 4: Converter efficiency vs. output current (1.
PAGE 4
Figure 5: Converter efficiency vs. output current (1.2Vout) Figure 6: Converter efficiency vs. output current (0.59Vout) The following figures provide typical output ripple and noise at 25oC Figure 7: Output ripple & noise at 12Vin, 5.0V/3A out Figure 8: Output ripple & noise at 12Vin, 3.
PAGE 5
Figure 9: Output ripple & noise at 12Vin, 2.5V/3A out Figure 10: Output ripple & noise at 12Vin, 1.8V/3A out CH1:VOUT, 20mV/div, 1uS/div CH1:VOUT, 20mV/div, 1uS/div Figure 11: Output ripple & noise at 12Vin, 1.2 V/3A out Figure 12: Output ripple & noise at 12Vin, 0.
PAGE 6
The following figures provide typical start-up using input voltage at 25oC Figure 13: Turn on delay time at 12Vin, 5.0V/3A out Figure 14: Turn on delay time at 12Vin, 3.3V/3A out (Top trace : VOUT, 2V/div; Bottom trace: VIN, 5V/div; 2mS/div) (Top trace: VOUT, 1V/div; Bottom trace: VIN, 5V/div; 2mS/div) Figure 15: Turn on delay time at 12Vin, 2.5V/3A out Figure 16: Turn on delay time at 12Vin, 1.8V/3A out Top trace: VOUT, 1V/div; Bottom trace: VIN, 5V/div; 2mS/div) (Top trace : VOUT, 0.
PAGE 7
Figure 17: Turn on delay time at 12Vin, 1.2V/3A out (Top trace: VOUT, 0.5V/div; Bottom trace: VIN, 5V/div; Figure 18: Turn on delay time at 12Vin, 0.59V/3A out 2mS/div) (Top trace: VOUT, 0.2V/div; Bottom trace: VIN, 5V/div; 2mS/div) The following figures provide transient response to dynamic load change at 25oC Figure 19: Typical transient response to step load change at 1A/μS from 100%~ 50%~100% of Io, max at 12Vin, 5.
PAGE 8
Figure 21: Typical transient response to step load change at 1A/μS from 100%~ 50%~100% of Io, max at 12Vin, 2.5Vout (Cout = 1uF+ 47uF+10μF ceramic) CH1 : VOUT, 50mV/div, 200uS/div Figure 22: Typical transient response to step load change at 1A/μS from 100%~ 50%~100% of Io, max at 12Vin, 1.8Vout (Cout = 1uF+ 47uF+10μF ceramic) CH1 : VOUT, 50mV/div,200uS/div Figure 23: Typical transient response to step load change at 1A/μS from 100%~ 50%~100% of Io, max at 12Vin, 1.
PAGE 9
The following figures provide output short circuit current at 25oC Figure 25: Output short circuit current 12Vin, 5.0Vout Figure 26: Output short circuit current 12Vin, 0.59 Vout Top trace: Vo, 1V/div; Bottom trace: Io, 5A/div; Top trace: Vo, 1V/div ;Bottom trace: Io, 5A/div; 20ms/div 20ms/div The following figures provide output short circuit current at 25oC Figure 27:Tracking function, Vtracking=5.5 V, Vout= 5.0V, full load Figure 28:Tracking function, Vtracking=0.8V,Vout= 0.
PAGE 10
DESIGN CONSIDERATIONS TEST CONFIGURATIONS Input Source Impedance To maintain low noise and ripple at the input voltage, it is critical to use low ESR capacitors at the input to the module. A highly inductive source can affect the stability of the module. An input capacitance must be placed close to the modules input pins to filter ripple current and ensure module stability in the presence of inductive traces that supply the input voltage to the module.
PAGE 11
DESIGN CONSIDERATIONS (CON.) FEATURES DESCRIPTIONS Safety Considerations Remote On/Off For safety-agency approval the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standards. The DCT series power modules have an On/Off pin for remote On/Off operation. Both positive and negative On/Off logic options are available in the DCT series power modules.
PAGE 12
FEATURES DESCRIPTIONS (CON.) Vo Remote Sense RLoad TRIM The DCT provide Vo remote sensing to achieve proper regulation at the load points and reduce effects of distribution losses on output line. In the event of an open remote sense line, the module shall maintain local sense regulation through an internal resistor. The module shall correct for a total of 0.5V of loss. The remote sense line impedance shall be < 10.
PAGE 13
FEATURE DESCRIPTIONS (CON.) Voltage Margining Output voltage margining can be implemented in the DCT modules by connecting a resistor, R margin-up, from the Trim pin to the ground pin for margining-up the output voltage and by connecting a resistor, R margin-down, from the Trim pin to the output pin for margining-down. Figure 37 shows the circuit configuration for output voltage margining. If unused, leave the trim pin unconnected.
PAGE 14
FEATURE DESCRIPTIONS (CON.) Power Good The DCT modules provide a Power Good (PGOOD) After the 10msec delay, an analog voltage is applied to signal that is implemented with an open-drain output to the SEQ pin and the output voltage of the module will indicate that the output voltage is within the regulation track this voltage on a one-to-one volt bases until the limits of the power module. The PGOOD signal will be output reaches the set-point voltage.
PAGE 15
THERMAL CONSIDERATIONS THERMAL CURVES Thermal management is an important part of the system design. To ensure proper, reliable operation, sufficient cooling of the power module is needed over the entire temperature range of the module. Convection cooling is usually the dominant mode of heat transfer. Hence, the choice of equipment to characterize the thermal performance of the power module is a wind tunnel.
PAGE 16
Output Current(A) DCT12S0A0S03 Output Current vs. Ambient Temperature and Air Velocity @Vin = 12V Vout=2.5V(Either Orientation) Output Current(A) 3.0 DCT12S0A0S03 Output Current vs. Ambient Temperature and Air Velocity @Vin = 12V Vout=0.59V(Either Orientation) 3.0 Natural Convection 2.5 Natural Convection 2.5 2.0 2.0 100LFM 1.5 1.5 1.0 1.0 0.5 0.5 0.0 55 60 65 70 75 80 85 90 95 100 105 Ambient Temperature (℃) Figure 44: Output current vs.
PAGE 17
PICK AND PLACE LOCATION RECOMMENDED PAD LAYOUT SURFACE-MOUNT TAPE & REEL 17 DS_DCT12S0A0S03NFA_11142013
PAGE 18
LEAD (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE Note: The temperature refers to the pin of DCT, measured on the pin Vout joint. LEAD FREE (SAC) PROCESS RECOMMEND TEMP. PROFILE Temp. Peak Temp. 240 ~ 245 ℃ 220℃ Ramp down max. 4℃ /sec. 200℃ 150℃ Preheat time 90~120 sec. Time Limited 75 sec. above 220℃ Ramp up max. 3℃ /sec. 25℃ Time Note: The temperature refers to the pin of DCT, measured on the pin Vout joint.
PAGE 19
MECHANICAL DRAWING 19 DS_DCT12S0A0S03NFA_11142013
PAGE 20
PART NUMBERING SYSTEM DCT 12 S 0A0 S 03 N Product Series Input Voltage Numbers of Outputs Output Voltage Package Type Output Current On/Off logic S - Single 0A0 Programmable S - SMD 03- 3A 06 - 6A 12 - 12A 20 - 20A DCT- 3A DCS - 6A DCM - 12A DCL - 20A 04 - 2.4~5.5V 12 – 4.