DB48S1.8-14 datasheet, PDF - EEWORLD Datasheet

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DB48S1.8-14: Description2:1 Input Voltage Range 40 Watt DC/DC Converter Single, Dual, and Triple Outputs; File Size189KB，4 Pages; ManufacturerWall Industries,Inc.; Websitehttps://www.wallindustries.com/

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DB48S1.8-14 Overview

2:1 Input Voltage Range 40 Watt DC/DC Converter Single, Dual, and Triple Outputs

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DB Series

2:1 Input Voltage Range

40 Watt DC/DC Converter

Single, Dual, and Triple Outputs

FEATURES

●

High Efficiency up to 90%

●

Fixed Switching Frequency

●

Six-Sided Continuous Shield

●

2:1 Wide Input Voltage Range

●

40 Watts Maximum Output power

●

Standard 2.02” x 2.02” x 0.4” Package

●

International Safety Standard Approval

●

Single, Dual, Dual Positive (Total Output Current 8A), and Triple Outputs Available

UL E155800

TUV

CE MARK

SPECIFICATIONS:

DB Series

All specifications apply @ 25°C ambient unless otherwise noted

INPUT SPECIFICATIONS

Input Voltage Range ............ 12V nominal input .......................... 9-18VDC

24V nominal input ........................ 18-36VDC

48V nominal input ........................ 36-75VDC

Under Voltage Lockout

12V nominal input........... DC-DC ON ...........................................9VDC

DC-DC OFF .........................................8VDC

24V nominal input........... DC-DC ON ......................................17.8VDC

DC-DC OFF .......................................16VDC

48V nominal input........... DC-DC ON .........................................36VDC

DC-DC OFF .......................................34VDC

Input Filter .................................................................................... L-C Type

Input Voltage Variation......... dv/dt ............................................ 5V/ms max

(Complies with ETS300 132 part 4.4)

Input Surge Voltage (100ms max) ............... 12V input ...................36VDC

24V input ...................50VDC

48V input .................100VDC

Input Reflected Ripple Current (See Note 6) ................................40mAp-p

(nominal Vin and full load)

Start Up Time (nominal Vin and constant resistive load)

Power Up................................................................................25ms typ.

Remote ON/OFF ....................................................................25ms typ.

Remote ON/OFF (See Note 7)

DC-DC ON .....................................................Open or 3.5V < Vr < 12V

DC-DC OFF......................................................Short or 0V < Vr < 1.2V

Remote Off Input Current (nominal Vin) ...........................................2.5mA

OUTPUT SPECIFICATIONS (CONTINUED)

Minimum Load (See Note 2)........... Single & Dual Positive..................... 0%

Dual & Triple ........................ 10% of FL

Ripple/Noise (See Note 5)..............................................................see table

(20MHz -Measured with a 104pF/50V MLCC)

Transient Response Recovery Time ...................................................250us

(25% load step change)

PROTECTION SPECIFICATIONS

Over Voltage Protection ................................... 1.5V Output................. 3.9V

(Zener diode clamp)

1.8V Output................. 3.9V

2.5V Output................. 3.9V

3.3V Output................. 3.9V

5V Output.................... 6.2V

12V Output................... 15V

15V Output................... 18V

Over Load Protection (% of FL at nominal input) ....................... 150% max.

Short Circuit Protection...................................... Hiccup, automatic recovery

Over Temperature Protection .......................................................115°C typ.

GENERAL SPECIFICATIONS

Efficiency ........................................................................................see table

Switching Frequency (See Note 8)............................................300KHz typ.

Isolation Voltage (Input to Output)......................................... 1600VDC min.

Isolation Voltage (Input/Output to Case) ............................... 1600VDC min.

Isolation Resistance ...............................................................10 ohms min.

Isolation Capacitance ............................................................. 1000pF max.

OUTPUT SPECIFICATIONS

Output Voltage ..............................................................................see table

Voltage Accuracy (nom Vin and full load) .........Single & Dual............. ±1%

Triple (main) .............. ±1%

(auxiliary) ......... ±5%

Voltage Adjustability (See Note 1) ..................................................... ±10%

(Single & Dual Outputs only-not including Dual positive & triple)

Output Current ..............................................................................see table

Output Power ........................................................................ 40 watts max.

Line Regulation (LL to HL at FL).................. Single & Dual.............. ±0.5%

Triple (main) .................. ±1%

Triple (auxiliary) ............. ±5%

Load Regulation (See Note 3) ..................... Single......................... ±0.5%

(10% to 100% FL)

Dual ............................... ±1%

Triple (main) .................. ±2%

(auxiliary) ............. ±5%

Load Cross Regulation (See Note 4) ....... Triple (main) ...................... ±1%

Dual/Triple (auxiliary)......... ±5%

ENVIRONMENTAL SPECIFICATIONS

Operating Temperature ................................ -40°C to +85°C (with derating)

Storage Temperature .......................................................... -55°C ~ +105°C

Maximum Case Temperature ........................................................... +100°C

Relative Humidity...................................................................5% to 95% RH

Temperature Coefficient ................................................... ±0.02% / °C max.

Thermal Impedance (See Note 10)

Natural Convection ............................................................ 9.2°C / Watt

Heat-Sink with 20LFM ......................................................... 7.6°C/Watt

Heat-Sink with 500LFM ....................................................... 2.8°C/Watt

Thermal Shock .................................................................... MIL-STD-810D

Vibration ................................10~55Hz, 10G, 30 minutes along X, Y, and Z

MTBF (See Note 9) .............................................................. 1.398 x 10 hrs

Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833

603-778-2300 www.wallindustries.com Fax 603-778-9797

DB Series

2:1 Input Voltage Range

40 Watt DC/DC Converter

Single, Dual, and Triple Outputs

NOTES

1. For single output: Maximum output deviation is 10% inclusive of remote sense and trim. If remote sense is not being used, the

+Vsense should be connected to its corresponding +OUTPUT and likewise the -Vsense should be connected to its corresponding

–OUTPUT.

2. Dual and triple outputs require a minimum 10% loading on the output to maintain specified regulation. Operation under no-load condition

will not damage these devices, however they may not meet all listed specifications.

3. Load regulation for triple output:

Main output (V1): 10% to 100% with 10% to 100% balanced on auxiliaries.

Auxiliary outputs (V2 and V3): 10% to 100% balanced on all outputs.

4. Cross regulation for dual output: asymmetrical load 25% / 100% FL

Cross regulation for triple output:

Main output 100% load, auxiliary 100%, other auxiliary25% to 100%.

Auxiliary outputs (V2 and V3): main output 100% load, auxiliary 100%, other auxiliary 25% to 100% or main output 25% auxiliary 25%,

other auxiliary 25% to 100%.

5. The models of DBXXD3.3-5-33 are specified with 1µF ceramic output capacitors.

6. Please add an external filter at converter input terminals when measuring input reflected ripple, as in Figure 1.

L: Simulated source impedance of 12µH.

C: Nippon chemi-con KMF series, 220µF/100V

7. The ON/OFF control pin voltage is referenced to the negative input.

8. Switching frequency for dual outputs: master (5Vo) 300KHz

10. Heat sink is optional. Please call factory for ordering details.

11. An external filter capacitor is required for EMC testing. The capacitor should be capable of handing 1A ripple current for 12V/24V/48V

models. We suggest: Nippon chemi-con KMF series, 220µF/100V, ESR 90mΩ.

12. Any condition of dual output (3.3V / 5V) rated Iout current, not to exceed 8A of total output current.

13. Maximum value at nominal input voltage and full load.

14. Typical value at nominal input voltage and full load.

15. Test at minimum Vin and constant resistive load.

slave (3.3Vo) 500KHz

9. BELLCORE TR-NWT-000332. Case I: 50% Stress, Temperature at 40ºC. (Ground fixed and controlled environment).

Figure 1

DERATING CURVES & EFFICIENCY GRAPHS

Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833

603-778-2300 www.wallindustries.com Fax 603-778-9797

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