Delta Electronics 20A, 4.5V-13.8Vin, 0.59V-5.1Vout User Manual
Delphi NE Series Non-Isolated Point of Load
FEATURES
High Efficiency:
94.0% @ 12Vin, 5V/20A out
Size:
Vertical: 30.5x15.5x12.0mm
(1.20”x0.61”x0.47”)
Horizontal: 30.5x15.5x12.9mm
(1.20”x0.61”x0.51”)
Wide input range: 4.5V~13.8V
Output voltage programmable from
0.59Vdc to 5.1Vdc via external resistors
Voltage and resistor-based trim
No minimum load required
Fixed frequency operation
Input UVLO, output OCP
Remote ON/OFF (Positive)
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing facility
UL/cUL 60950 (US & Canada), TUV
(EN60950) --pending
DC/DC Modules: 4.5V~13.8Vin, 0.59V~5.1Vout, 20A
The Delphi NE 20A Series, 4.5 to 13.8V wide input, wide trim 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 ND/NE product family is
the second generation, non-isolated point-of-load DC/DC power
modules for the datacom applications which cut the module size by
almost 50% in most of the cases compared to the first generation NC
series POL modules. The product family here provides 20A of output
current in a vertically or horizontally mounted through-hole package
and the output can be resistor trimmed from 0.59Vdc to 5.1Vdc. 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 outstanding
electrical and thermal performance, as well as extremely high
reliability under highly stressful operating conditions.
OPTIONS
Vertical or horizontal versions
APPLICATIONS
DataCom
Distributed power architectures
Servers and workstations
LAN/WAN applications
Data processing applications
PRELIMINARY DATASHEET
DS_NE12S20A_072722007
TECHNICAL SPECIFICATIONS
(Ambient Temperature=25°C, minimum airflow=200LFM, nominal Vin=12Vdc unless otherwise specified.)
PARAMETE R NOTES and CONDITIONS NE12S0A0V/H20
Min. Typ. Max. Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage operation 4.5 13.8 Vdc
Operating Temperature (Vertical) Refer to Fig.25 for the measuring point 0 130 °C
Operating Temperature (Horizontal) Refer to Fig.25 for the measuring point 0 TBD °C
Storage Temperature -55 125 °C
INPUT CHARACTERISTICS
Operating Input Voltage 4.5 13.8 V
Input Under-Voltage Lockout
Turn-On Voltage Threshold 4.3 V
Turn-Off Voltage Threshold 3.3 V
Lockout Hysteresis Voltage 1.0 V
Maximum Input Current 12Vin, 5Vo, operating, full load 8.9 A
No-Load Input Current Vin=12V, Vout=5V 150 mA
Off Converter Input Current Remote OFF 10 mA
Input Reflected-Ripple Current P-P thru 2uH inductor 5Hz to 20MHz 30 mA
Input Ripple Rejection 120Hz 60 dB
OUTPUT CHARACTERISTICS
Output Voltage Adjustment Range 0.59 5.1 V
Output Voltage Set Point With a 0.1% trim resistor -1 +1 %Vo
Output Voltage Regulation
Over Load Io=Io_min to Io_max -0.5 +0.5 %Vo
Over Line Vin=Vin_min to Vin_max -0.2 +0.2 %Vo
Total output range Over load, line, temperature regulation and set point -2.0 +2.0 %Vo
Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth
Peak-to-Peak Full Load, 10uF Tan cap, 12Vin, 5Vo 20 mV
RMS Full Load, 10uF Tan cap, 12Vin, 5Vo 5 mV
Output Current Range 0 20 A
Output Voltage Under-shoot at Power-Off Vin=12V, Turn OFF 100 mV
Output short-circuit current, RMS value Continuous 3.6 A
Output DC Current-Limit Inception Hiccup mode 110 200 %Iomax
DYNAMIC CHARACTERISTICS
Output Dynamic Load Response 12Vin, 2.5Vout, 10µF ceramic cap
Positive Step Change in Output Current 75~100% load , 5A/uS 200 mV
Negative Step Change in Output Current 100~75% load , 5A/uS 200 mV
Settling Time Settling to be within regulation band (to 10% Vo deviation) 100 µs
Turn-On Transient
Start-Up Time, from On/Off Control From Enable high to 90% of Vo 2 3 ms
Start-Up Time, from input power From Vin=12V to 90% of Vo 2 3 ms
Minimum Output Capacitance 0 µF
5.0Vo,Maximum Output Capacitance
EFFICIENCY
Vo=0.59V Vin=12V, Io=20A 75 %
Vo=0.9V Vin=12V, Io=20A 80.5 %
Vo=2.5V Vin=12V, Io=20A 91 %
Vo=5.0V Vin=12V, Io=20A 94 %
SINK EFFICIENCY
Vo=5.0V Vin=12V, Io=20A 92 %
FEATURE CHARACTERISTICS
Switching Frequency Fixed 500 KHz
ON/OFF Control Positive logic (internally pulled high)
Logic High Module On (or leave the pin open) 0.8 5.0 V
Logic Low Module Off 0 0.3 V
GENERAL SPECIFICATIONS
Calculated MTBF
Weight 8.8 grams
Turn on overshoot <1% vo ,ESR≥1m
25℃, 300LFM, 80% load
2000 µF
TBD Mhours
Preliminary DS_NE12S20A_07272007
2
ELECTRICAL CHARACTERISTICS CURVES
95
90
85
80
75
70
Efficiency (%)
65
60
55
1 2 4 6 8 101214161820
Output current (A)
95
90
85
80
75
70
Efficiency (%)
65
60
55
1 2 4 6 8 10 12 14 16 18 20
Output current (A)
Figure 1: Converter efficiency vs. output current
(0.59V output voltage, 12V input)
95
90
85
80
75
70
Efficiency (%)
65
60
55
12468101214161820
Output current (A)
Figure 3: Converter efficiency vs. output current
(1.5V output voltage, 12V input)
95
90
85
80
75
70
Efficiency (%)
65
60
55
1 2 4 6 8 101214161820
Output current (A)
Figure 5: Converter efficiency vs. output current
(3.3V output voltage, 12V input)
Figure 2: Converter efficiency vs. output current
(0.9V output voltage, 12V input)
95
90
85
80
75
70
Efficiency (%)
65
60
55
1 2 4 6 8 101214161820
Output current (A)
Figure 4: Converter efficiency vs. output current
(2.5V output voltage, 12V input)
95
90
85
80
75
70
Efficiency (%)
65
60
55
1 2 4 6 8 101214161820
Output current (A)
Figure 6: Converter efficiency vs. output current
(5.0V output voltage, 12V input)
Preliminary DS_NE12S20A_07272007
3
ELECTRICAL CHARACTERISTICS CURVES (CON.)
Figure 7: Output ripple & noise at 12Vin, 0.59V/20A out
Figure 9: Output ripple & noise at 12Vin, 1.5V/20A out
Figure 8: Output ripple & noise at 12Vin, 0.9V/20A out
Figure 10: Output ripple & noise at 12Vin, 2.5V/20A out
Figure 11: Output ripple & noise at 12Vin, 3.3V/20A out
Preliminary DS_NE12S20A_07272007
Figure 12: Output ripple & noise at 12Vin, 5.0V/20A out
4
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