Delta DNQ12 User Manual

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

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

2

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)

3

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

4