Delta Electronics NC30 User Manual

FEATURES

 High efficiency:

94% @ 12Vin, 5V/30A out

 Voltage and resistor-based trim

 No minimum load required

 Output voltage programmable from

0.9Vdc to 5.0Vdc via external resistors

 Fixed frequency operation

 Input UVLO, output OVP, OTP, OCP, SCP

 Remote ON/OFF (default: positive)

 Power good output signal

 Output voltage sense

 ISO 9001, TL 9000, ISO 14001, QS 9000,

OHSAS 18001 certified manufacturing

facility

 UL/cUL 60950 (US & Canada) Recognized,

and TUV (EN60950) Certified

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

directives

Delphi NC30 Series Non-Isolated Point of Load DC/DC Power Modules: 12Vin, 0.9V-5Vout, 30A

The Delphi NC30 Series, 12V 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 NC30 series operates from a 12V nominal input, provides up

to 30A of power in a vertical or horizontal mounted through-hole

package and the output can be resistor- or voltage-trimmed from

0.9Vdc to 5.0Vdc. NC30 series has built-in current sharing control and

multiple NC30/NC40 series modules could be paralleled together to

provide even higher output currents. NC30 series provides a very cost

effective point of load solution. 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.

OPTIONS

 Vertical or horizontal versions

 Negative On/Off logic

APPLICATIONS

 DataCom

 Distributed power architectures

 Servers and workstations

 LAN / WAN applications

 Data processing applications

DATASHEET DS_NC12S30A_05222008

TECHNICAL SPECIFICATIONS

(TA=25°C, airflow rate=400LFM, Vin=12Vdc, nominal Vout unless otherwise noted.)

PARA METER NOTES and CONDITIONS NC12S0A0V30

Min. Typ. Max. Units

ABSOLUTE MAXIMUM RATINGS

Input Voltage 14 Vdc Operating Temperature Refer to Figures 36 and 41 for the measuring point -40 125 °C Storage Temperature -40 125 °C Input/Output Isolation Voltage Non-isolated NA V

INPUT CHARACTERISTICS

Operating Input Voltage 10.2 12 13.8 V Input Under-Voltage Lockout

Turn-On Voltage Threshold 9.0 V Turn-Off Voltage Threshold 8.3 V

Lockout Hysteresis Voltage 0.7 V Maximum Input Current 100% Load, 10.2Vin, 5Vout 15.6 A No-Load Input Current 160 Off Converter Input Current 10 mA Input Reflected-Ripple Current Refer to Figure 35 150 mA Input Voltage Ripple Rejection 120 Hz 55 dB

OUTPUT CHARACTERISTICS

Output Voltage Adjustment Range 0.9 5.0 Output Voltage Set Point Output Voltage Regulation

Over Load Io=Io,min to Io,max -1.0 +1.0 %

Over Line Vin=Vin,min to Vin,max -0.2 +0.2 % Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth

Peak-to-Peak Full Load, 1µF ceramic, 10µF tantalum 50 mV

RMS Full Load, 1µF ceramic, 10µF tantalum 15 mV Output Current Range 0 30 A Output Voltage Over-shoot at Start-up Vin=12V, Turn ON 1 % Output Voltage Under-shoot at Power-Off Vin=12V, Turn OFF 100 mV Output DC Current-Limit Inception 36 A Output Short-Circuit Current (Hiccup mode) 36 A

DYNAMIC CHARACTERISTICS

Out Dynamic Load Response 12Vin, 10µF Tan & 1µF Ceramic load cap, 10A/µs

Positive Step Change in Output Current 50% Io,max to 75% Io,max 75 mV

Negative Step Change in Output Current 75% Io,max to 50% Io,max 75 mV

Setting Time Settling to be within regulation band (+/- 3.0%) 150 µs Turn-On Transient Io=Io.max

Start-Up Time, From On/Off Control

Start-Up Time, From Input Minimum Output Startup Capacitive Load Maximum Output Startup Capacitive Load Minimum Input Capacitance

EFFICIENCY

Vo=0.9V Vo=1.2V Vin=12V, Io=30A 82 % Vo=1.5V Vin=12V, Io=30A 85 % Vo=1.8V Vin=12V, Io=30A 87 % Vo=2.5V Vin=12V, Io=30A 90 % Vo=3.3V Vin=12V, Io=30A 92 % Vo=5.0V Vin=12V, Io=30A 94 %

FEATURE CHARACTERISTICS

Switching Frequency 300 KHz ON/OFF Control Positive logic (internally pulled high)

Logic High Module On (or leave the pin open) 2.4 Vin,max V

Logic Low Module Off -0.2 0.8 V Remote Sense Range 0.4 V

GENERAL SPECIFICATIONS

MTBF 1.69 M hours Weight 36 grams Over-Temperature Shutdown

Vin=12V, Io=Io,max, Ta=25℃, 1% trim resistors

Vin=12V, Vo=10% of Vo,set, Ta=25℃ Vo=10% of Vo,set, Ta=25℃ Ex: Two OSCON 6.3V/680µF (ESR 13mΩ max each) Full load; ESR ≧10mΩ Ex: OSCON 16V/270µF (ESR 18mΩ max)

Vin=12V, Io=30A 78 %

Auto restart, refer to Fig. 36&41 for the measuring point 130 °C

-3.0 +3.0 %

10 30 ms

1360

5440 µF

270 µF

DS_NC12S30A_05222008

ELECTRICAL CHARACTERISTICS CURVES

100

Efficiency (%)

0 2 4 6 8 1012141618202224262830

10.2 12 13.8

Output Current (A)

Figure 1: Converter efficiency vs. output current

(0.9V output voltage)

100

Efficiency (%)

0 2 4 6 8 1012141618202224262830

10.2 12 13.8

Output Current (A)

Figure 3: Converter efficiency vs. output current

(1.5V output voltage)

100

Efficiency (%)

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30

10.2 12 13.8

Output Current (A)

Figure 2: Converter efficiency vs. output current

(1.2V output voltage)

100

Efficiency (%)

0 2 4 6 8 101214161820222426283

10.2 12 13.8

Output Current (A)

Figure 4: Converter efficiency vs. output current

(1.8V output voltage)

100

Efficiency (%)

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30

10.2 12 13.8

Output Current (A)

Figure 5: Converter efficiency vs. output current

(2.5V output voltage)

DS_NC12S30A_05222008

100

Efficiency (%)

0 2 4 6 8 1012141618202224262830

10.2 12 13.8

Output Current (A)

Figure 6: Converter efficiency vs. output current

(3.3V output voltage)

ELECTRICAL CHARACTERISTICS CURVES (CON.)

120

100

Efficiency (%)

0 2 4 6 8 1012141618202224262830

Figure 7: Converter efficiency vs. output current

(5.0V output voltage)

10.2 12 13.8

Output Current (A)

Figure 8: Output ripple & noise at 12Vin, 0.9V/30A out

Figure 9: Output ripple & noise at 12Vin, 1.2V/30A out

Figure 11: Output ripple & noise at 12Vin, 1.8V/30A out

DS_NC12S30A_05222008

Figure 10: Output ripple & noise at 12Vin, 1.5V/30A out

Figure 12: Output ripple & noise at 12Vin, 2.5V/30A out

ELECTRICAL CHARACTERISTICS CURVES (CON.)

Figure 13: Output ripple & noise at 12Vin, 3.3V/30A out

Figure 15: Turn on delay time at Vin On/Off, 0.9V/30A out

Ch2:Vin Ch3:Vout Ch4:PWRGD

Figure 14: Output ripple & noise at 12Vin, 5.0V/30A out

Figure 16:Turn on delay time at Remote On/Off, 0.9V/30A out

Ch2:ENABLE Ch3:Vout Ch4:PWRGD

Figure 17: Turn on delay time at 12vin, 5.0V/30A out

Ch2:Vin Ch3:Vout Ch4:PWRGD

DS_NC12S30A_05222008

Figure 18: Turn on delay time at Remote On/Off, 5.0V/30A out

Ch2: ENABLE Ch3:Vout Ch4:PWRGD

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