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Manuals → Brands → Delta Electronics → Power Supply → Delphi ND Series → Specification sheet

Delta Electronics Delphi ND Series Specification Sheet

Delta electronics inc. converter specification sheet.

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Delphi ND Series Non-Isolated Point of Load
DC/DC Power Modules: 12Vin, 0.9V~3.63Vout,
50Aout
The Delphi ND Series, 12V input, single output, non-isolated point of
load (POL) DC/DC converters are the latest offering from a world leader
in power systems technology and manufacturing — Delta Electronics,
Inc. The ND/NE product family is the second generation, non-isolated
point-of-load DC/DC power modules for the DataCom / Networking / IT
Applications and it will help to cut the module size by 35% to 50%
compared to the first generation NC series POL modules. The ND/NE
product family provides 6A to 60A of output current in a vertically or
horizontally mounted through-hole package and the output can be
resistor trimmed from 0.9Vdc to 3.63Vdc. It provides a very cost
effective, high efficiency, and high density point of load solution. With
creative design technology and optimization of component placement,
these
converters
possess
performance, as well as extremely high reliability under highly stressful
operating conditions.
PRELIMINARY DATASHEET
DS_ND12S50A_07172008
outstanding
electrical
and
FEATURES
High efficiency:
92.5% @ 12Vin, 3.3V/50A out
Size: 61.0x31.8x10.2mm
Voltage and resistor-based trim
No minimum load required
Output voltage programmable from
0.9Vdc to 3.63Vdc via external resistors
Fixed frequency operation
Single-in line package (SIP)
Input UVLO, output OCP, OTP, SCP
Remote ON/OFF (Positive)
Power good output signal (open collector)
Output voltage sense
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing facility
UL/cUL 60950-1 (US & Canada), TUV
(EN60950-1) - pending
OPTION
Negative on/off logic
Current sharing
APPLICATIONS
thermal
(2.40"×1.25"×0.40")
DataCom
Distributed power architectures
Servers and workstations
LAN / WAN applications
Data processing applications
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Summary of Contents

  • Page 1

    Delphi ND Series Non-Isolated Point of Load DC/DC Power Modules: 12Vin, 0.9V~3.63Vout, 50Aout The Delphi ND Series, 12V input, single output, non-isolated point of load (POL) DC/DC converters are the latest offering from a world leader in power systems technology and manufacturing — Delta Electronics, Inc.

  • Page 2

    TECHNICAL SPECIFICATIONS (Ambient Temperature=25°C, minimum airflow=200LFM, nominal V PARAMETER ABSOLUTE MAXIMUM RATINGS Input Voltage Operating Temperature Storage Temperature Input/Output Isolation Voltage 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 Off Converter Input Current Inrush Transient...

  • Page 3: Table Of Contents

    ELECTRICAL CHARACTERISTICS CURVES 10.2 5.01 10 OUTPUT CURRENT (A) Figure 1: Converter efficiency vs. output current (0.9V output voltage) 10.2 5.01 10 OUTPUT CURRENT (A) Figure 3: Converter efficiency vs. output current (1.5V output voltage) 10.2 5.01 10 OUTPUT CURRENT (A) Figure 5: Converter efficiency vs.

  • Page 4

    ELECTRICAL CHARACTERISTICS CURVES (CON.) Figure 7: Output ripple & noise at 12Vin, 0.9V/50A out Figure 9: Output ripple & noise at 12Vin, 1.5V/50A out Figure 11: Output ripple & noise at 12Vin, 2.5V/50A out DS_ND12S10A_07172008 Figure 8: Output ripple & noise at 12Vin, 1.2V/50A out Figure 10: Output ripple &...

  • Page 5

    ELECTRICAL CHARACTERISTICS CURVES (CON.) Figure 13: Turn on delay time at 12Vin, 0.9V/50A out Ch1: Vout Ch4: Vin Figure 15: Turn on delay time at 12Vin, 3.3V/50A out Ch1: Vout Ch4: Vin Figure 17: Typical transient response to step load change at 10A/μS from 50%to 75% and 75% to 50 of Io, max at 12Vin, 0.9V DS_ND12S10A_07172008 Figure 14: Turn on delay time Remote On/Off, 0.9V/50A out...

  • Page 6

    Figure 19: Typical transient response to step load change at 10A/μS from 50%to 75% and 75% to 50 of Io, max at 12Vin, 1.5V Figure 21: Typical transient response to step load change at 10A/μS from 50%to 75% and 75% to 50 of Io, max at 12Vin, 2.5V DS_ND12S10A_07172008 Figure 20: Typical transient response to step load change at 10A/μS from 50%to 75% and 75% to 50 of Io, max at 12Vin, 1.8V...

  • Page 7

    DESIGN CONSIDERATIONS The ND 50A uses two phase and voltage mode controlled buck topology. The output can be trimmed in the range of 0.9Vdc to 3.63Vdc with a resistor from Trim pin to Ground. A remote sense function is provided and it is able to compensate for a drop from the output of converter to point of load.

  • Page 8

    FEATURES DESCRIPTIONS (CON.) Input Under-Voltage Lockout The input under-voltage lockout prevents the converter from being damaged while operating when the input voltage is too low. The lockout occurs between 7.6V to 9.0V. Over-Current and Short-Circuit Protection The ND series modules have non-latching over-current and short-circuit protection circuitry.

  • Page 9

    FEATURES DESCRIPTIONS (CON.) The output can also be set by an external voltage connected to trim pin as shown in Figure 28 Figure 28: output voltage trim with voltage source To use voltage trim, the trim equation for the ND50 is (please refer to Fig.28): Vout is the desired output voltage Vt is the external trim voltage...

  • Page 10

    THERMAL CONSIDERATION 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 11

    THERMAL CUREVES ND12S0A0V50(standard) Output Current vs. Ambient Temperature and Air Velocity Output Current (A) @Vin=12V Vout=3.3V (Through PCB Orientation) Natural Convection 100LFM 200LFM 300LFM 400LFM Figure 35: Output current vs. ambient temperature and air velocity@ Vin=12V, Vout=3.3V(Through PCB Orientation) MECHANICAL DRAWING DS_ND12S10A_07172008 Ambient Temperature (℃) VERTICAL...

  • Page 12

    PART NUMBERING SYSTEM Product Number of Input Voltage Series outputs 12- 10.2~13.8V S- Single Non-isolated Output Series MODEL LIST Model Name Packaging ND12S0A0V50PNFA Vertical CONTACT: www.delta.com.tw/dcdc USA: Telephone: East Coast: (888) 335 8201 West Coast: (888) 335 8208 Fax: (978) 656 3964 Email: DCDC@delta-corp.com WARRANTY...

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