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FEATURES
High efficiency:
93% @ 12Vin, 3.3V/25A out
Small size and low profile:
31.8x50.8x8.50mm (1.25”x2.00”x0.34”)
Fixed frequency operation
Output voltage programmable from
0.8Vdc to 5.5Vdc via external resistor
Remote ON/OFF & Remote sense
No minimum load required
Low output ripple and noise
Output voltage sequencing
Input UVLO, OTP, OCP (non-latching)
Output OVP (Latching)
ISO 9001, TL 9000, ISO 14001, QS 9000,
OHSAS 18001 certified manufacturing facility
UL/cUL 60950-1 (US & Canada), and TUV
(EN60950-1) - pending
Delphi Series DNQ12, Non-Isolated, Point of Load
DC/DC Power Modules: 10-14Vin, 0.8V-5.5V/25A out
The Delphi series DNQ12S, 10V~14V 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 DNQ12S series provides a programmable output voltage from 0.8V to
5.5V using an external resistor. This product family is available in a surface
mounted or SIP package and provides up to 25A of output current. With
creative design technology and optimization of component placement,
these converters possess outstanding electrical and thermal performance
and extremely high reliability under highly stressful operating conditions.
OPTIONS
Negative On/Off logic
APPLICATIONS
Telecom/DataCom
Distributed power architectures
Servers and workstations
LAN/WAN applications
Data processing applications
PRELIMINARY DATASHEET
DS_DNQ12SIP25_07172008
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PRELIMINARY TECHNICAL SPECIFICATIONS
TA = 25°C, airflow rate = 300 LFM, V
PARAMETER NOTES and CONDITIONS DNQ12S0A0R25 (Standard)
Min. Typ. Max. Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous) -0.3 14 Vdc
Operating Temperature Refer to figure 24 for measuring point -40 125 °C
Storage Temperature -55 125 °C
INPUT CHARACTERISTICS
Operating Input Voltage 10.0 12.0 14.0 Vdc
Maximum Input Current Vin=10.0 to 14.0, Vo,set=5Vdc, Io=Io,max 14 Adc
Inrush Transient 1 A2s
Input Reflected Ripple Current (5Hz to 20MHz)
Input Ripple Rejection (120Hz) 50 dB
Recommended Input Fuse See Safety Considerations section 30 A
OUTPUT CHARACTERISTICS
Output Voltage Set-point Vin=Vin,min, Io=Io,max, TA =25°C -1.2 +1.2
Output Voltage Adjustable Range Selected by an external resistor 0.7887 5.5 Vdc
Output Voltage Regulation
Over Line Vin=Vin,min to Vin,max 0.01 0.1 % Vo,set
Over Load Io=Io,min to Io,max 0.1 0.25 % Vo,set
Over Temperature
Total Output Voltage Range
Output Voltage Ripple and Noise
RMS (5Hz to 20MHz bandwidth) Vin=Vin,typ, Io=Io,min to Io,max 5
Peak-to-Peak (5Hz to 20MHz bandwidth) Vin=Vin,typ, Io=Io,min to Io,max 15 50 mVp-p
External Capacitance
Output Current 0 25 Adc
Output Current Limit Inception (Hiccup Mode) 150 200 % Io
Output Short-Circuit Current (Hiccup Mode)
Dynamic Load Response
Positive Step Change in Output Current Load change from 50% to 100% of Io,max 150 mV
Negative Step Change in Output Current Load change from 100% to 50% of Io,max 150 mV
Settling Time (Vo<10%peak deviation) 25 µs
EFFICIENCY
Vo,set =0.8V
Vo,set =1.2V Vin=Vin,typ, Io=Io,max, TA =25°C 84.7 %
Vo,set =1.5V Vin=Vin,typ, Io=Io,max, TA =25°C 87.3 %
Vo,set =1.8V Vin=Vin,typ, Io=Io,max, TA =25°C 88.9 %
Vo,set =2.0V Vin=Vin,typ, Io=Io,max, TA =25°C 89.7 %
Vo,set =2.5V Vin=Vin,typ, Io=Io,max, TA =25°C 91.4 %
Vo,set =3.3V Vin=Vin,typ, Io=Io,max, TA =25°C 93.1 %
Vo,set =5.0V Vin=Vin,typ, Io=Io,max, TA =25°C 95.1 %
FEATURE CHARACTERISTICS
Switching Frequency 500 kHz
SEQ/ENA Signal Interface
Logic High (SEQ/ENA pin open - Module Off)
SEQ/ENA Voltage Vin=Vin,min to Vin,max 3.5 14 V
SEQ/ENA Current Vin=Vin,min to Vin,max 0.5 2.33 mA
Logic Low (Module ON)
SEQ/ENA Voltage Vin=Vin,min to Vin,max 1.2 V
SEQ/ENA Current Vin=Vin,min to Vin,max 200 µA
Turn-On Transient Vin=Vin,typ, Io=Io,max
Turn-On delay Time, From remote On/Off From V
Turn-On delay Time, From Input From Vin= Vin,min to Vo=10% of Vo,set 1 ms
Turn-On rise Time Time for Vo to rise from 10% to 90% of Vo,set 5 ms
Output Voltage Overshoot - Startup
Output Overvoltage Protection (Latching) 5.7 6.0 6.3 V
Input Undervoltage Lockout
Turn-on Threshold 9.9 V
Turn-off Threshold 8.1 V
Remote Sense Range 0.5 V
GENERAL SPECIFICATIONS
MTBF
Weight 20 Grams
Over-Temperature Shutdown Refer to Figure 24 for the measuring point 130 °C
= 10Vdc and 14Vdc, and nominal Vout unless otherwise noted.
in
1µH source impedance; Vin,min to Vin,max, Io=Io,max ;
See Test configuration section
= T
to T
T
A
A, min
Over all operating input voltage, resistive load, and
temperature conditions until end of life
Cout=10µF tantalum//1µF ceramic capacitors
ESR ≧1mΩ
ESR ≧10mΩ at Vo,set=5Vdc
ESR ≧10mΩ at Vo,set below 3.3Vdc
Vo ≦ 250mV
dIo/dt=5A/µs, Vin=Vin,typ, TA =25°C,
Cout=10µF tantalum//1µF ceramic capacitors
Vin=Vin,typ, Io=Io,max, TA =25°C 79.0 %
SEQ/ENA
Io=80% of Io,max, Vin=12Vdc, TA =25℃
Io=80%Io, max, Ta=25℃
A, max
-3.0 +3.0 % Vo,set
=1.2V to Vo=10% of Vo,set 1 ms
60 mAp-p
% Vo,set
0.5 1.6 % Vo,set
15
1000 µF
5,000 µF
10,000 µF
1 Adc
0.1 0.5 % Vo,set
3.03 MHours
mVrms
DS_DNQ12SIP25_07172008
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ELECTRICAL CHARACTERISTICS CURVES
86
85
84
(%)
η
83
82
81
80
EFFICIENCY,
79
78
0 5 10 15 20 25
OUPUT CURRENT, Io (A)
10.8V
12.0V
13.2V
(%)
η
EFFICIENCY,
89
88
87
86
85
84
83
82
81
0 5 10 15 20 25
OUPUT CURRENT, Io (A)
10.8V
12.0V
13.2V
Figure 1: Converter efficiency vs. output current
(1.2V output voltage)
91
90
89
(%)
η
88
87
86
85
EFFICIENCY,
84
83
0 5 10 15 20 25
OUPUT CURRENT, Io (A)
Figure 3: Converter efficiency vs. output current
(1.8V output voltage)
94
93
92
(%)
η
91
90
89
88
EFFICIENCY,
87
86
0 5 10 15 20 25
OUPUT CURRENT, Io (A)
10.8V
12.0V
13.2V
10.8V
12.0V
13.2V
Figure 2: Converter efficiency vs. output current
(1.5V output voltage)
93
92
91
(%)
η
90
89
88
87
EFFICIENCY,
86
85
0 5 10 15 20 25
OUPUT CURRENT, Io (A)
Figure 4: Converter efficiency vs. output current
(2.5V output voltage)
96
95
(%)
94
η
93
92
91
EFFICIENCY,
90
89
0 5 10 15 20 25
OUPUT CURRENT, Io (A)
10.8V
12.0V
13.2V
10.8V
12.0V
13.2V
Figure 5: Converter efficiency vs. output current
(3.3V output voltage)
DS_DNQ12SIP25_07172008
Figure 6: Converter efficiency vs. output current
(5.0V output voltage)
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ELECTRICAL CHARACTERISTICS CURVES
(Vo)
Output Voltage
Figure 7: Output ripple & noise at 12Vin, 3.3V/25A out
(Cout = 1μF ceramic // 10μF tantalum)
(Vo)
Output Voltage
(Io)
Output Current
(Vo)
Output Voltage
Figure 8: Output ripple & noise at 12Vin, 1.2V/25A out
(Cout = 1μF ceramic // 10μF tantalum)
(Vo)
Output Voltage
(Io)
Output Current
Figure 9: Typical transient response to step load change at
5A/μS from 100% to 50% of Io, max at 12Vin,
3.3V out (Cout = 1μF ceramic // 10μF tantalum)
(Vin)
Input Voltage
(Vo)
Output Voltage
Figure 11: Typical start-up at 12vin, 3.3V/25A out
DS_DNQ12SIP25_07172008
Figure 10: Typical transient response to step load change at
5A/μS from 50% to 100% of Io, max at 12Vin,
3.3V out (Cout = 1μF ceramic // 10μF tantalum)
On/Off Voltage
(Vo)
Output Voltage
Figure 12: Typical start-up at Remote On/Off, 3.3V/25A out
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