Delta Electronics NC15 Series Bedienungsanleitung

FEATURES

 High Efficiency:

91% @ 12Vin, 5V/15A out

 Size: 30.5x27.9x11.4mm

(1.20”×1.10”×0.45”) -- Vertical

30.5x27.9x12.9mm

(1.20”×1.10”×0.51”) -- Horizontal

 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 OCP, SCP

 Power good output signal

 Remote ON/OFF (default: Positive)

 ISO 9000, TL 9000, ISO 14001 certified

manufacturing facility

 UL/cUL 60950-1 (US & Canada)

Recognized, and TUV (EN60950-1)

Certified

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

directives

APPLICATIONS

Delphi NC15 Series Non-Isolated Point of Load

DC/DC Power Modules: 12Vin, 0.9V-5.0Vout, 15A

The Delphi NC15 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 NC15 series operates from a 12V nominal input, provides up to 15A

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. It

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.

DATASHEET

DS_NC12S15A_01102008

 DataCom

 Distributed power architectures

 Servers and workstations

 LAN / WAN applications

 Data processing applications

OPTIONS

 Vertical or horizontal versions

 Negative ON/OFF logic

NC12S15A_01102008

TECHNICAL SPECIFICATIONS

(Ambient Temperature=25°C, minimum airflow=200LFM, nominal Vin=12Vdc unless otherwise specified.)

PARAMETER NOTES and CONDITIONS NC12S0A0V/H15

Min. Typ. Max. Units

ABSOLUTE MAXIMUM RATINGS

Input Voltage 14 Vdc

Operating Temperature (Vertical) With appropriate air flow and derating, see Figs 33 0 130 °C

Operating Temperature (Horizontal) With appropriate air flow and derating, see Figs 39 0 125 °C

Storage Temperature -40 125 °C

Input/Output Isolation Voltage Non-isolated NA V

INPUT CHARACTERISTICS

Operating Input Voltage 10.2 12.0 13.8 V

Input Under-Voltage Lockout

Turn-On Voltage Threshold 9.0 V

Turn-Off Voltage Threshold 7.5 V

Lockout Hysteresis Voltage 1.5 V

Maximum Input Current 100% Load, 10.2Vin, 5.0Vout 8.1 A

No-Load Input Current Vin=12V, Vout=0.9V 65 mA

Off Converter Input Current Remote OFF 9 mA

Input Reflected-Ripple Current Refer to Figure 31. 150 mA

Input Ripple Rejection 120Hz 45 dB

OUTPUT CHARACTERISTICS

Output Voltage Adjustment Range 0.9 5.0 V

Output Voltage Set Point With a 1.0% trim resistor -2.5 +2.5 %

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, 100nF ceramic, 10µF tantalum 50 mV

RMS Full Load, 100nF ceramic, 10µF tantalum 20 mV

Output Current Range 0 15 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 Hiccup mode 16 A

Output Short-Circuit Current Hiccup mode

DYNAMIC CHARACTERISTICS

Output Dynamic Load Response 12Vin, 100nF ceramic, 10µF tantalum load cap, 10A/µs

Positive Step Change in Output Current 50% Io_max to 75% Io_max 100 mV

Negative Step Change in Output Current 75% Io_max to 50% Io_max 100 mV

Settling Time Settling to be within regulation band (Vo +/- 2.5%) 200 µs

Turn-On Transient

Start-Up Time, from On/Off Control From Enable high to 10% of Vo 10 ms

Start-Up Time, from input power From Vin=12V to 10% of Vo 10 ms

Minimum Output Capacitance Ex: OSCON 6.3V/680µF (ESR 13 mΩmax.) 680 µF

Maximum Output Startup Capacive Load Full Load 6800 µF

Minimum Input Capacitance Ex: OSCON 16V/270µF (ESR 18 mΩmax.) 270 µF

EFFICIENCY

Vo=0.9V Vin=12V, Io=15A 75 %

Vo=1.2V Vin=12V, Io=15A 79 %

Vo=1.5V Vin=12V, Io=15A 81 %

Vo=1.8V Vin=12V, Io=15A 84 %

Vo=2.5V Vin=12V, Io=15A 87 %

Vo=3.3V Vin=12V, Io=15A 89 %

Vo=5.0V Vin=12V, Io=15A 91 %

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 5.5 V

Logic Low Module Off 0 0.8 V

GENERAL SPECIFICATIONS

MTBF Telcordia SR-332 Issue1 Method1 Case3 at 50°C 2.1 M hours

Weight 16.5 grams

NC12S15A_01102008

ELECTRICAL CHARACTERISTICS CURVES

0123456789101112131415

Output Current (A)

Efficiency (%)

10.2 12 13.8

0123456789101112131415

Output Current (A)

Efficiency (%)

10.2 12 13.8

Figure 1: Converter efficiency vs. output current Figure 2: Converter efficiency vs. output current

(0.9V output voltage) (1.2V output voltage)

100

0123456789101112131415

Output Current (A)

Efficiency (%)

10.2 12 13.8

100

0123456789101112131415

Output Current (A)

Efficiency (%)

10.2 12 13.8

Figure 3: Converter efficiency vs. output current

(1.8V output voltage)

Figure 4: Converter efficiency vs. output current

(2.5V output voltage)

100

0123456789101112131415

Output Current (A)

Efficiency (%)

10.2 12 13.8

100

0123456789101112131415

Output Current (A)

Efficiency (%)

10.2 12 13.8

Figure 5: Converter efficiency vs. output current

(3.3V output voltage)

Figure 6: Converter efficiency vs. output current

(5.0V output voltage)

NC12S15A_01102008

ELECTRICAL CHARACTERISTICS CURVES

Figure 7: Output ripple & noise at 12Vin, 0.9V/15A out

Figure 8: Output ripple & noise at 12Vin, 1.2V/15A out

Figure 9: Output ripple & noise at 12Vin, 1.8V/15A out

Figure 10: Output ripple & noise at 12Vin, 2.5V/15A out

Figure 11: Output ripple & noise at 12Vin, 3.3V/15A out

Figure 12: Output ripple & noise at 12Vin, 5.0V/15A out

NC12S15A_01102008

ELECTRICAL CHARACTERISTICS CURVES

Figure 13: Turn on delay time at 12Vin, 0.9V/15A out

Ch2:Vin Ch3:Vout Ch4:PWRGD Figure 14: Turn on delay time Remote On/Off, 0.9V/15A out

Ch2:ENABLE Ch3:Vout Ch4:PWRGD

Figure 15: Turn on delay time at 12Vin, 2.5V/15A out

Ch2:Vin Ch3:Vout Ch4:PWRGD Figure 16: Turn on delay time at Remote On/Off, 2.5V/15A out

Ch2:ENABLE Ch3:Vout Ch4:PWRGD

Figure 17: Turn on delay time at 12Vin, 5.0V/15A out

Ch2:Vin Ch3:Vout Ch4:PWRGD Figure 18: Turn on delay time at Remote On/Off, 5.0V/15A out

Ch2:ENABLE Ch3:Vout Ch4:PWRGD

NC12S15A_01102008

ELECTRICAL CHARACTERISTICS CURVES

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, 0.9V out

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, 1.2V 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, 5.0V out

NC12S15A_01102008

DESIGN CONSIDERATIONS FEATURES DESCRIPTIONS

ENABLE (On/Off)

The NC15 is a single phase and voltage mode controlled

Buck topology. Block diagram of the converter is shown in

Figure 23. The output can be trimmed in the range o

0.9Vdc to 5.0Vdc by a resistor from Trim pin to Ground.

The ENABLE (on/off) input allows external circuitry to pu

the NC converter into a low power dissipation (sleep)

mode. Positive (active-high) ENABLE is available as

standard.

The converter can be turned ON/OFF by remote control.

Positive on/off (ENABLE pin) logic implies that the

converter DC output is enabled when this signal is driven

high (greater than 2.4V) or floating and disabled when the

signal is driven low (below 0.8V). Negative on/off logic is

optional and could also be ordered.

Positive ENABLE (active-high) units of the NC series are

turned on if the ENABLE pin is high or floating. Pulling the

pin low will turn off the unit. With the active high function,

the output is guaranteed to turn on if the ENABLE pin is

driven above 2.4V. The output will turn off if the ENABLE

pin voltage is pulled below .8V.

The converter provides an open collector signal called

Power Good. The power good signal is pulled low when

output is not within ±10% of Vout or Enable is OFF.

The ENABLE input can be driven in a variety of ways as

shown in Figures 24, 25 and 26. If the ENABLE signal

comes from the primary side of the circuit, the ENABLE

can be driven through either a bipolar signal transisto

(Figure 24) or a logic gate (Figure 25). If the enable signal

comes from the secondary side, then an opto-coupler o

other isolation devices must be used to bring the signal

across the voltage isolation (please see Figure 26).

The converter can protect itself by entering hiccup mode

against over current and short circuit condition. Also, the

converter will shut down when an over voltage protection

is detected.

NC6A/15A/20A

Vout

Ground

TrimEnable

Ground

Vin

Figure 23: Block Diagram Figure 24: Enable Input drive circuit for NC series

NC6A/15A/20A

Vout

Ground

TrimEnable

Ground

Vin

Safety Considerations

It is recommended that the user to provide a ver

fast-acting type fuse in the input line for safety. The output

voltage set-point and the output current in the application

could define the current rating of the fuse.

Figure 25: Enable input drive circuit using logic gate.

NC6A/15A/20A

Vout

Ground

Trim

Enable

Ground

Vin

Figure 26: Enable input drive circuit example with isolation.

NC12S15A_01102008

The NC06/NC15/NC20 module has a trim range of 0.9V

to 5.0V. The trim resistor equation for the NC6A/NC15A/

NC20A is :

FEATURES DESCRIPTIONS (CON.)

Input Under-Voltage Lockout

9.0

1170

)( −

=Ω Vout

The input under-voltage lockout prevents the converte

from being damaged while operating when the inpu

voltage is too low. The lockout occurs between 7.0V to

8.0V.

Vout is the output voltage setpoint

Rs is the resistance between Trim and Ground

Rs values should not be less than 280Ω

Over-Current and Short-Circuit Protection

Output Voltage Rs (Ω)

The NC series modules have non-latching over-curren

and short-circuit protection circuitry. When over curren

condition occurs, the module goes into the non-latching

hiccup mode. When the over-current condition is

removed, the module will resume normal operation.

OPEN+0.9 V

3.92K+1.2 V

+1.5 V 1.96K

+1.8 V 1.3K

+2.5 V 732

n over current condition is detected by measuring the

voltage drop across the high-side MOSFET. The voltage

drop across the MOSFET is also a function of the

MOSFET’s Rds(on). Rds(on) is affected by temperature,

therefore ambient temperature will affect the current limit

inception point. Please see the electrical characteristics

for details of the OCP function.

+3.3 V 487

287+5.0 V

Figure 28: Typical trim resistor values

NC6A/15A/20A

Vout

Ground

Trim

Enable

Ground

Vin

1.3K

The detection of the Rds(on) of the high side MOSFE

also acts as an over temperature protection since high

temperature will cause the Rds(on) of the MOSFET to

increase, eventually triggering over-current protection.

Output Voltage Programming

Figure 29: Output voltage trim with voltage source

The output voltage of the NC series is trimmable by

connecting an external resistor between the trim pin and

To use voltage trim, the trim equation for the

NC6A/NC15A/ NC20A is (please refer to Fig. 29) :

output ground as shown Figure 27 and the typical trim

resistor values are shown in Figure 28. The output can

also be set by an external voltage connected to trim pin as

shown in Figure 29.

)9.0(17.1 )17.13.1(

)( −−

−

=Ω VoutRsVtRs

kRt

NC6A/15A/20A

Vout

Ground

Trim

Enable

Ground

Vin

Vout is the desired output voltage

Vt is the external trim voltage

Rs is the resistance between Trim and Ground (in KΩ)

Rt is the resistor to be defined with the trim voltage (in KΩ)

Below is an example about using this voltage trim

equation :

Figure 27: Trimming Output Voltage

Example：

If Vt = 1.25V, desired Vout = 2.5V and Rs = 0.715KΩ

Ω=

−−

−

=Ω K

VoutRsVtRs

KRt 51.12

)9.0(17.1 )17.13.1(

)(

NC12S15A_01102008

FEATURES DESCRIPTIONS (CON.) Output Capacitance

There is no output capacitor on the NC series modules.

Hence, an external output capacitor is required for stable

operation. For NC15 modules, an external 6.3V/680μF

low ESR capacitor (for example, OSCON) is required fo

stable operation.

Power Good

The converter provides an open collector signal called

Power Good. This output pin uses positive logic and is

open collector. This power good output is able to sink

5mA and set high when the output is within ±10% o

output set point.

It is important to places these low ESR capacitors as

close to the load as possible in order to get improved

dynamic response and better voltage regulation,

especially when the load current is large. Several of these

low ESR capacitors could be used together to furthe

lower the ESR.

The power good signal is pulled low when output is not

within ±10% of Vout or Enable is OFF.

Current Sink Capability

Please refer to individual datasheet for the maximum

allowed start-up load capacitance for each NC series as i

is varied between series.

The NC series converters are able to sink current as well

as function as a current source. It is able to sink the full

output current at any output voltage up to and including

2.5V. This feature allows the NC series fit into any

voltage termination application.

Reflected Ripple Current and Output Ripple and

Noise Measurement

The measurement set-up outlined in Figure 31 has been

used for both input reflected/ terminal ripple current and

output voltage ripple and noise measurements on NC

series converters.

Voltage Margining Adjustment

Output voltage margin adjusting can be implemented in

the NC modules by connecting a resistor, Rmargin-up, from

the Trim pin to the Ground for for margining up the output

voltage. Also, the output voltage can be adjusted lowe

by connecting a resistor, Rmargin-down, from the Trim pin to

the voltage source Vt. Figure 30 shows the circuit

configuration for output voltage margining adjustment.

NC6A/15A/20A

Vout

Ground

Trim

Enable

Ground

Vin Rmargin-dow

Rmargin-up

Cs=270μF*1, Ltest=1.4μH, Cin=270μF*1, Cout=680μF *1

Figure 31: Input reflected ripple/ capacitor ripple current and

output voltage ripple and noise measurement setup for NC15

Figure 30: Circuit configuration for output voltage margining

Paralleling

NC06/NC15/NC20 converters do not have built-in curren

sharing (paralleling) ability. Hence, paralleling of multiple

NC06/NC15/NC20 converters is not recommended.

NC12S15A_01102008

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.

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 commonly uses

vertically mounted circuit cards in cabinet racks in

which the power modules are mounted.

The following figure shows the wind tunnel

characterization setup. The power module is mounted

on a test PWB and is vertically positioned within the

wind tunnel. The space between the neighboring PWB

and the top of the power module is constantly kept at

6.35mm (0.25’’).

Thermal Derating

Heat can be removed by increasing airflow over the

module. To enhance system reliability, the power

module should always be operated below the

maximum operating temperature. If the temperature

exceeds the maximum module temperature, reliability

of the unit may be affected.

Dieses Handbuch passt für folgende Modelle

Inhaltsverzeichnis

Andere Delta Electronics Medienkonverter Handbücher

Delta Electronics

Delta Electronics PMC-24V150W1AA Bedienungsanleitung

Delta Electronics

Delta Electronics PMC Series Bedienungsanleitung

Delta Electronics

Delta Electronics PMT V Series Bedienungsanleitung

Delta Electronics

Delta Electronics HDS 1300 Bedienungsanleitung

Delta Electronics

Delta Electronics Q48SR Bedienungsanleitung

Delta Electronics

Delta Electronics PMF Series Bedienungsanleitung

Delta Electronics

Delta Electronics PMT Series Bedienungsanleitung

Delta Electronics

Delta Electronics PMC-24V100W1A Series Bedienungsanleitung

Delta Electronics

Delta Electronics PMC Series Bedienungsanleitung

Delta Electronics

Delta Electronics 0.59V~5.1Vout Bedienungsanleitung

Delta Electronics

Delta Electronics Series 240W Bedienungsanleitung

Delta Electronics

Delta Electronics Delphi Q48SP Bedienungsanleitung

Delta Electronics

Delta Electronics Delphi S36SS Bedienungsanleitung

Delta Electronics

Delta Electronics Series DNT12 Bedienungsanleitung

Delta Electronics

Delta Electronics Series DNM04 Bedienungsanleitung

Delta Electronics

Delta Electronics VFD-EL series Bedienungsanleitung

Delta Electronics

Delta Electronics Delphi H48SR Bedienungsanleitung

Delta Electronics

Delta Electronics Delphi E48SR Bedienungsanleitung

Delta Electronics

Delta Electronics Delphi Series E24SR Bedienungsanleitung

Delta Electronics

Delta Electronics Delphi S24SA Bedienungsanleitung

Delta Electronics

Delta Electronics PMC Series Bedienungsanleitung

Delta Electronics

Delta Electronics DNL Series Handbuch

Delta Electronics

Delta Electronics DNS SIP Series Handbuch

Delta Electronics

Delta Electronics Delphi Series V48SB Bedienungsanleitung

Beliebte Medienkonverter Handbücher anderer Marken

SoundTraxx

SoundTraxx Blunami BLU-2200 Bedienungsanleitung

SPROLINK

SPROLINK VA1 Bedienungsanleitung

Acclaim Lighting

Acclaim Lighting DDC-1-AC Bedienungsanleitung

Nikon

Nikon AF-S TC-20E III Bedienungsanleitung

Axis

Axis AXIS Q7406 Bedienungsanleitung

Omega

Omega TAC80B-J Bedienungsanleitung

Zoom

Zoom Thunderbolt TAC-2R Bedienungsanleitung

OST

OST iConverter 10/100M Bedienungsanleitung

Vertiv

Vertiv Netsure Bedienungsanleitung

birddog

birddog MINI Bedienungsanleitung

Roland

Roland GI-10 Bedienungsanleitung

Wallenstein

Wallenstein WX310 Bedienungsanleitung

Pace

Pace MSS 200-1 Bedienungsanleitung

Solar Converters

Solar Converters EQ 12/24-50 Bedienungsanleitung

CYP

CYP EL-7400V Bedienungsanleitung

TIE

TIE MIDI 1i1o Bedienungsanleitung

DCS

DCS Vivaldi Upsampler Bedienungsanleitung

Westermo

Westermo MCW-211 SERIES Bedienungsanleitung