Delta Electronics DNT04 User Manual

Delphi DNT04, Non-Isolated Point of Load

FEATURES

 High Efficiency: 94%@ 5Vin, 3.3V/3A out

 Small size and low profile:

0.80” x 0.45” x 0.27” (SMD)

0.90” x 0.40” x 0.25” (SIP)

 Standard footprint and pinout

 Resistor-based trim

 Output voltage programmable from

0.75V to 3.63V via external resistors

 Pre-bias startup

 No minimum load required

 Fixed frequency operation

 Input UVLO, OCP

 Remote ON/OFF

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

OHSAS 18001 certified manufacturing

facility

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

and TUV (EN60950)- pending

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

pending

DC/DC Power Modules: 2.4~5.5Vin, 0.75~3.63Vo, 3A out

The Delphi Series DNT04, 2.4-5.5V 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 DNT04 series provides a programmable outpu

voltage from 0.75V to 3.63V via external resistors. This product family is

available in surface mount or SIP package and provides up to 3A o

output current in an industry standard footprint. 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.

The DNT04, 3A modules have excellent thermal performance and can

provide full output current at up to 85℃ ambient temperature with no

airflow.

OPTIONS

 Positive On/Off logic

 SMD or SIP package

APPLICATIONS

 Telecom/DataCom

 Distributed power architectures

 Servers and workstations

 LAN/WAN applications

 Data processing applications

PRELIMINARY DATASHEET

DS_DNT04SIP03_09262007

TECHNICAL SPECIFICATIONS

(TA = 25°C, airflow rate = 300 LFM, V

PARAMETER NOTES and CONDITIONS DNT04S0A0R03NFA

Min. Typ. Max. Units

ABSOLUTE MAXIMUM RATINGS

Input Voltage (Continuous) 0 5.8 Vdc Operating Temperature Refer to Figure 32 for measuring point -40 125 °C Storage Temperature -55 125 °C

INPUT CHARACTERISTICS

Operating Input Voltage Input Under-Voltage Lockout

Turn-On Voltage Threshold 2.1 V

Turn-Off Voltage Threshold 2.0 V Maximum Input Current Vin=4.5V Vo=3.3V, Io=Io,max 2.5 A No-Load Input Current 30 45 mA Off Converter Input Current 1 Inrush Transient Vin=2.4V to 5.5V, Io=Io,min to Io,max 0.1 A2S Recommended Input Fuse TBD A

OUTPUT CHARACTERISTICS

Output Voltage Set Point Vin=5V, Io=Io, max -2.0 Vo,set +2.0 Output Voltage Adjustable Range 0.7525 3.63 V Output Voltage Regulation

Over Line Vin=2.4V to 5.5V 0.3 % Vo,set Over Load Io=Io,min to Io,max 0.4 % Vo,set Over Temperature Ta=-40℃ to 85℃ 0.4 % Vo,set

Total Output Voltage Range Over sample load, line and temperature -3.0 +3.0 % Vo,set Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth

Peak-to-Peak Full Load, 1µF ceramic, 10µF tantalum 25 50 mV

RMS Full Load, 1µF ceramic, 10µF tantalum 10 Output Current Range 0 3 A Output Voltage Over-shoot at Start-up 5 % Vo,set Output DC Current-Limit Inception 220 % Io Output Short-Circuit Current (Hiccup Mode) Io,s/c 3 Adc (rms)

DYNAMIC CHARACTERISTICS

Dynamic Load Response 10µF Tantalum & 1µF Ceramic load cap, 2.5A/µs

Positive Step Change in Output Current 50% Io, max to 100% Io, max 220 mV Negative Step Change in Output Current 100% Io, max to 50% Io, max 220 mV Setting Time to 10% of Peak Devitation 25 µs

Turn-On Transient Io=Io.max

Start-Up Time, From On/Off Control Von/off, Vo=10% of Vo,set 7 ms Start-Up Time, From Input Vin=Vin,min, Vo=10% of Vo,set 7

Maximum Output Startup Capacitive Load

EFFICIENCY

Vo=3.3V Vo=2.5V Vin=5V, 100% Load 92.5 % Vo=1.8V Vin=5V, 100% Load 90.0 % Vo=1.5V Vin=5V, 100% Load 88.5 % Vo=1.2V Vin=5V, 100% Load 87.0 % Vo=0.75V Vin=5V, 100% Load 81.5 %

FEATURE CHARACTERISTICS

Switching Frequency 300 kHz ON/OFF Control, (Negative logic)

Logic Low Voltage Module On, Von/off -0.2 0.3 V

Logic High Voltage Module Off, Von/off 2.5 Vin.max V

Logic Low Current Module On, Ion/off 10 µA

Logic High Current Module Off, Ion/off 0.2 1 mA

GENERAL SPECIFICATIONS

MTBF Io=100% of Io, max; Ta=25°C TBD M hours Weight 2.3 grams

= 2.4Vdc and 5.5Vdc, nominal Vout unless otherwise noted.)

Vo ≦ Vin –0.5V

Full load; ESR ≧1mΩ Full load; ESR ≧10mΩ

Vin=5V, 100% Load 94.0 %

2.4 5.5 V

1000 µF 3000 µF

% Vo,set

DS_DNT04SIP3A_09262007

ELECTRICAL CHARACTERISTICS CURVES

Figure 1: Converter efficiency vs. output current (5Vin/3.3Vout)

Figure 3: Converter efficiency vs. output current (5Vin/1.8Vout)

Figure 2: Converter efficiency vs. output current (5Vin/2.5Vout)

Figure 4: Converter efficiency vs. output current (5Vin/1.5Vout)

Figure 5: Converter efficiency vs. output current (5Vin/1.2Vout)

DS_DNT04SIP3A_09262007

Figure 6: Converter efficiency vs. output current (5Vin/0.75Vout)

ELECTRICAL CHARACTERISTICS CURVES (CON.)

Figure 7: Output ripple & noise at 5Vin, 3.3V/3A out, 50mV/div Figure 8: Output ripple & noise at 5Vin, 2.5V/3A out, 50mV/div

Figure 9: Output ripple & noise at 5Vin, 1.8V/3A out, 50mV/div

Figure 11: Output ripple & noise at 5Vin, 1.2V/3A out, 50mV/div

DS_DNT04SIP3A_09262007

Figure 10: Output ripple & noise at 5Vin, 1.5V/3A out, 50mV/div

Figure 12: Output ripple & noise at 5Vin, 0.75V/3A out, 50mV/div

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