DBW48D12-40

DBW24S33-33 WALL

Document overview

• PDF pages: 3

Technical content

Page 1

FEATURES

• High Efficiency up to 88%
• RoHS Directive Compliant
• Fixed Switching Frequency
• Six-Sided Continuous Shield
• 40 Watts Maximum Output power
• Single and Dual Outputs Available
• 4:1 Ultra Wide Input Voltage Range
• Standard 2.02” x 2.02” x 0.4” Package

SPECIFICATIONS: DBW Series

All specifications apply @ 25°C ambient unless otherwise noted

INPUT SPECIFICATIONS

Input Voltage Range ............ 24V nominal input ........................ 9 - 36VDC

48V nominal input ...................... 18 - 75VDC

Under Voltage Lockout 24V nominal input........... DC-DC ON..........................................9 VDC

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

48V nominal input........... DC-DC ON........................................18 VDC

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

Input Filter ....................................................................................... Pi Type

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

(Complies with ETS300 132 part 4.4)

Input Surge Voltage (100ms max) ............... 24V input ...................50VDC

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

Input Reflected Ripple Current (nominal Vin and FL) ...................20mAp-p

Start Up Time (nominal Vin and constant resistive load) Power Up..............................................................................20ms max. Remote ON/OFF ..................................................................20ms max.

Remote ON/OFF (See Note 4) Positive Logic ................ DC-DC ON................Open or 3V < Vr < 12V

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

Negative Logic ............... DC-DC ON...............Short or 0V < Vr < 1.2V

DC-DC OFF ..............Open or 3V < Vr < 12V

Remote Off Input Current (nominal Vin) ..............................................3mA

OUTPUT SPECIFICATIONS

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

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

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

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

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

Line Regulation (LL to HL at FL)....................................................... ±0.2%

Load Regulation (See Note 2) ..................... Single Output............. ±0.5% (min. load to 100% load)

Dual Output ................... ±1%

Load Cross Regulation (See Note 3)........... Dual Output ................... ±5%

Minimum Load (See Note 8) .........................................................see table

Ripple/Noise (See Note 9) ............................................................see table

Transient Response Recovery Time..................................................250us (25% load step change)

UL TUV CB

CE MARK

PROTECTION SPECIFICATIONS

Over Voltage Protection ...................................3.3V Output.................3.9V (Zener diode clamp)

5V Output....................6.2V 12V Output...................15V 15V Output...................18V ±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.......................................................110°C typ.

GENERAL SPECIFICATIONS

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

Switching Frequency .................................................................300KHz typ.

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

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

Case Grounding (connect case to -Vin with decoupling Y cap) ........... TBD Isolation Resistance ...............................................................109 ohms min.

Isolation Capacitance ............................................................. 1500pF max.

ENVIRONMENTAL SPECIFICATIONS

Operating Ambient Temperature............. -40°C to +55°C (without derating)

+55°C to +105°C (with derating)

Storage Temperature ..........................................................-55°C ~ +125°C

Maximum Case Temperature........................................................... +105°C

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

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

Thermal Impedance (See Note 6) Without Heat-Sink..............................................................9.2°C / Watt With Heat-Sink.....................................................................7.6°C/Watt

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

Vibration ................................10~55Hz, 10G, 30 minutes along X, Y, and Z MTBF (See Note 5) ........Bellcore TR-NWT-000332............ 1.105 x 106 hrs

MIL-STD-217F ............................. 1.511 x 105 hrs

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OUTPUT VOLTAGE / CURRENT RATING CHART

NOTES

1. For single output: Maximum output deviation is 10% inclusive of remote sense and trim. If remote sense is not being used, the +sense should be connected to its corresponding +OUTPUT and likewise the -sense should be connected to its corresponding –OUTPUT. 2. Load regulation for dual output: Minimum load to 100% load balanced on all outputs. 3. Cross regulation for dual output: asymmetrical load 25% / 100% full load. 4. The ON/OFF control function: There are positive (standard) and negative logic (option). The pin voltage is referenced to negative input. To order negative logic ON/OFF control add the suffix “R” to the part number (Ex: DBW48S5-40R)

1. BELLCORE TR-NWT-000332. Case I: 50% Stress, Temperature at 40ºC. (Ground fixed and controlled environment). MIL-STD-217F Notice2 @ Ta=25°C, Full Load (Ground, Benign, controlled environment). 6. Heat sink is optional. Please call factory for ordering details. 7. The DBW series required an external filter to meet EN55022 class A. 8. The dual output required a minimum 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. 9. Output ripple & noise measured with a 0.1µF/50V MLCC. 10. Typical Value at nominal input voltage. 11. Maximum value at nominal input voltage and full load

1. Typical Value at nominal input voltage and full load. 13. Test by minimum Vin and constant resistive load.

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DERATING CURVES & EFFICIENCY GRAPHS

MECHANICAL DRAWING

1. All dimensions in inches (mm) Tolerance: X.XX±0.02 (X.X±0.5) 2. Pin pitch tolerance ±0.014 (0.35)