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DS_ND12S10A_07172008

 

2

TECHNICAL SPECIFICATIONS 

(Ambient Temperature=25°C, minimum airflow=200LFM, nominal V

in

=12Vdc unless otherwise specified.) 

PARAMETER 

NOTES and CONDITIONS 

ND12S0A0V50 (Standard)

 

 

 

Min. Typ.  Max.

Units 

ABSOLUTE MAXIMUM RATINGS 

 

 

 

 

 

Input Voltage 

 

-0.3 

 

13.8 

Vdc 

Operating Temperature 

Refer to Figure 32 for the measuring point 

 

124 

°C 

Storage Temperature 

 

-40 

 

125 

°C 

Input/Output Isolation Voltage 

Non-isolated 

 

NA 

 

INPUT CHARACTERISTICS 

 

 

 

 

 

Operating Input Voltage 

 

10.2 

12.0 

13.8 

Input Under-Voltage Lockout 

 

 

 

 

 

Turn-On Voltage Threshold 

 

8.5 

9.0 

9.5 

Turn-Off Voltage Threshold 

 

7.1 

7.6 

8.1 

Lockout Hysteresis Voltage 

 

 

1.4 

 

Maximum Input Current 

100% Load, 10.2Vin, 3.3Vout 

 

 

24 

No-Load Input Current 

Vin=12V, Vout=3.3V 

 

 

250 

mA 

Off Converter Input Current 

Remote OFF 

 

15 

30 

mA 

Inrush Transient 

Vin=10.2~13.8V, Io=Min to Max Load 

 

 

1.00 

A

2

Input Reflected-Ripple Current 

Refer to Figure 31. 

 

20 

 

mA 

Input Ripple Rejection 

120Hz 

 

60 

 

dB 

OUTPUT CHARACTERISTICS 

 

 

 

 

 

Output Voltage Adjustment Range 

 

0.9 

 

3.63 

Output Voltage Set Point 

With a 1.0% trim resistor 

-2 

 

+2 

Output Voltage Regulation 

 

 

 

 

 

Over Load 

Io=Io_min to Io_max 

-1 

 

+1 

Over Line 

Vin=Vin_min to Vin_max 

-0.2 

 

+0.2 

Total output range 

Over load, line, temperature regulation and set point 

-3 

 

+3 

Output Voltage Ripple and Noise 

5Hz to 20MHz bandwidth 

 

 

 

 

Peak-to-Peak 

Full Load, 1uF ceramic, 10uF Tan cap and 4*680uF OSCON         

 

25 

50 

mV 

RMS 

Full Load, 1uF ceramic, 10uF Tan cap and 4*680uF OSCON     

 

15 

mV 

Output Current Range 

 

0  50  A 

Output Voltage Over-shoot at Start-up 

Vin=12V, Turn ON 

 

 

Output Voltage Under-shoot at Power-Off 

Vin=12V, Turn OFF 

 

 

100 

mV 

Output DC Current-Limit Inception 

Hiccup mode 

110 

 

200 

%Iomax 

DYNAMIC CHARACTERISTICS 

 

 

 

 

 

Output Dynamic Load Response 

12Vin, 1uF ceramic, 10uF Tan cap and 4*680uF OSCON 

 

 

 

 

Positive Step Change in Output Current 

25A to 37.5A, 10A/uS 

 

75 

 

mV 

Negative Step Change in Output Current 

37.5A to 25A, 10A/uS 

 

75 

 

mV 

Settling Time 

Settling to be within regulation band (to 10% Vo deviation) 

 

50 

 

µs 

Turn-On Transient 

 

 

 

 

 

Start-Up Time, from On/Off Control 

From Enable high to 90% of Vo 

 

 

10 

ms 

Start-Up Time, from input power 

From Vin=12V to 90% of Vo 

 

 

10 

ms 

Minimum Output Capacitance 

Ex: One OSCON 6.3V/680uF (ESR=13m

 max) 

680 

 

 

µF 

Maximum Output Startup Capacive Load 

Full Load (ESR

1m

 

 

3000 

µF 

Minimum Input Capacitance 

 

0    

µF 

EFFICIENCY 

 

 

 

 

 

Vo=0.9V 

Vin=12V, Io=50A 

 

81 

 

Vo=1.2V Vin=12V, 

Io=50A 

 

84.5 

 

Vo=1.5V 

Vin=12V, Io=50A 

 

87 

 

Vo=1.8V Vin=12V, 

Io=50A 

 

88.5 

 

Vo=2.5V 

Vin=12V, Io=50A 

 

91 

 

Vo=3.3V Vin=12V, 

Io=50A 

 

92.5 

 

Vo=3.63V 

Vin=12V, Io=50A 

 

92.8 

 

FEATURE CHARACTERISTICS 

 

 

 

 

 

Switching Frequency 

Fixed 

 

300 

 

KHz 

ON/OFF Control 

Positive logic (internally pulled high) 

 

 

 

 

  Logic High 

Module On (or leave the pin open) 

2.4 

 

Vinmax

  Logic Low 

Module Off 

-0.2 

 

0.8 

Remote Sense Range 

 

 

 

0.5 

GENERAL SPECIFICATIONS 

 

 

 

 

 

Calculated MTBF 

Telcordia SR-332 Issue1 Method1 Case3 at 50°C 

 

TBD 

 

Mhours 

Weight  

 34.2 

 

grams 

Over-Temperature Shutdown 

Refer to Figure 32 for    the measuring point 

 

134 

 

°C 

 
 
 
 
 

 

Summary of Contents for Delphi ND Series

Page 1: ...odules 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 c...

Page 2: ...uF OSCON 25 50 mV RMS Full Load 1uF ceramic 10uF Tan cap and 4 680uF OSCON 5 15 mV Output Current Range 0 50 A Output Voltage Over shoot at Start up Vin 12V Turn ON 2 Output Voltage Under shoot at Power Off Vin 12V Turn OFF 100 mV Output DC Current Limit Inception Hiccup mode 110 200 Iomax DYNAMIC CHARACTERISTICS Output Dynamic Load Response 12Vin 1uF ceramic 10uF Tan cap and 4 680uF OSCON Positiv...

Page 3: ... 35 40 45 50 OUTPUT CURRENT A EFFICIENCY 10 2 12 0 13 8 70 75 80 85 90 95 100 5 01 10 15 20 25 30 35 40 45 50 OUTPUT CURRENT A EFFICIENCY 10 2 12 0 13 8 Figure 3 Converter efficiency vs output current 1 5V output voltage Figure 4 Converter efficiency vs output current 1 8V output voltage 70 75 80 85 90 95 100 5 01 10 15 20 25 30 35 40 45 50 OUTPUT CURRENT A EFFICIENCY 10 2 12 0 13 8 70 75 80 85 90...

Page 4: ...noise at 12Vin 0 9V 50A out Figure 8 Output ripple noise at 12Vin 1 2V 50A out Figure 9 Output ripple noise at 12Vin 1 5V 50A out Figure 10 Output ripple noise at 12Vin 1 8V 50A out Figure 11 Output ripple noise at 12Vin 2 5V 50A out Figure 12 Output ripple noise at 12Vin 3 3V 50A out ...

Page 5: ... Enable Figure 15 Turn on delay time at 12Vin 3 3V 50A out Ch1 Vout Ch4 Vin Figure 16 Turn on delay time at Remote On Off 3 3V 50A out Ch1 Vout Ch4 Enable 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 out Figure 18 Typical transient response to step load change at 10A μS from 50 to 75 and 75 to 50 of Io max at 12Vin 1 2V out ...

Page 6: ... 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 out 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 out Figure 22 Typical transient response to step load change at 10A μS from 50 to 75 and 75 to 50 of Io max at 12Vin 3 3V out ...

Page 7: ...Safety Considerations It is recommended that the user to provide a fuse with TBD in the input line for safety The output voltage set point and the output current in the application could define the amperage rating of the fuse FEATURES DESCRIPTIONS ENABLE On Off The ENABLE on off input allows external circuitry to put the ND converter into a low power dissipation sleep mode Positive ENABLE is avail...

Page 8: ...tion 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 connects as shown in Figures 25 Figure 25 circuit configuration for remote sense Over Temperature Protection OTP To provide additional over temperature protection in a fault condition...

Page 9: ... Cs 270μF 1 Ltest 1 4uH Cin 270μF 2 Cout 680uF 4 Figure 30 Input reflected ripple capacitor ripple current and output voltage ripple and noise measurement setup for ND50 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...

Page 10: ...re 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 Thermal Testing Setup Delta s DC DC power modules are characterized in heated vertical wind tunnels that simulate the thermal environments encountered in most electronics equipment This type of equipment c...

Page 11: ...re and Air Velocity Vin 12V Vout 3 3V Through PCB Orientation 0 5 10 15 20 25 30 35 40 45 50 55 25 30 35 40 45 50 55 60 65 70 75 80 85 Natural Convection Output Current A Ambient Temperature 100LFM 200LFM 400LFM 300LFM Figure 35 Output current vs ambient temperature and air velocity Vin 12V Vout 3 3V Through PCB Orientation ...

Page 12: ...information is listed on our web site or is available upon request from Delta Information furnished by Delta is believed to be accurate and reliable However no responsibility is assumed by Delta for its use nor for any infringements of patents or other rights of third parties which may result from its use No license is granted by implication or otherwise under any patent or patent rights of Delta ...

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