DB48T3.3-12-31 Wall Industries, DB48T3.3-12-31 Datasheet - Page 3

• Manufacturer Part Number: DB48T3.3-12-31
• Description: 2:1 Input Voltage Range 40 Watt Dc/dc Converter Single, Dual, and Triple Outputs
• Manufacturer: Wall Industries

NOTES
1. For single output: Maximum output deviation is 10% inclusive of remote sense and trim. If remote sense is not being used, the
2. Dual and triple outputs require a minimum 10% loading on the output to maintain specified regulation. Operation under no-load condition
3. Load regulation for triple output:
4. Cross regulation for dual output: asymmetrical load 25% / 100% FL
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.
7. The ON/OFF control pin voltage is referenced to the negative input.
8. Switching frequency for dual outputs: master (5Vo) 300KHz
9. BELLCORE TR-NWT-000332. Case I: 50% Stress, Temperature at 40ºC. (Ground fixed and controlled environment).
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
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.
DERATING CURVES & EFFICIENCY GRAPHS
+Vsense should be connected to its corresponding +OUTPUT and likewise the -Vsense should be connected to its corresponding
will not damage these devices, however they may not meet all listed specifications.
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.
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%.
–OUTPUT.
models. We suggest: Nippon chemi-con KMF series, 220µF/100V, ESR 90mΩ.
L: Simulated source impedance of 12µH.
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax [phone]
C: Nippon chemi-con KMF series, 220µF/100V
slave (3.3Vo) 500KHz
Figure 1
Single, Dual, and Triple Outputs
40 Watt DC/DC Converter
2:1 Input Voltage Range
DB Series