Features: • 48 V to 48 V V•I Chip Converter
• 6.3 A (9.4 A for 1 ms)
• High density 1218 W/in3
• Small footprint 280 W/in2
• Low weight 0.5 oz (14 g)
• Pick & Place / SMD
• 125 operation
• 1 s transient response
• 3.5 million hours MTBF
• Typical efficiency 96%
• No output filtering required
• Surface mount BGA or J-Lead packagesApplicationIn applications requiring higher current or redundancy, VTMs can be operated in parallel without adding control circuitry or signal lines. To maximize current sharing accuracy, it is imperative that the source and load impedance on each VTM in a parallel array be equal. If VTMs are being fed by an upstream PRM, the VC nodes of all VTMs must be
connected to the PRM VC.
To achieve matched impedances, dedicated power planes within the PC board should be used for the output and output return paths to the array of paralleled VTMs. This technique is preferable to using traces of varying size and length.
The VTM power train and control architecture allow bi-directional power transfer when the VTM is operating within its specified ranges. Bi-directional power processing improves transient response in the event of an output load dump. The VTM may operate in reverse, returning output power back to the input source. It does so efficiently.
Pinout
Specifications
|
Parameter |
Values |
Unit |
Notes |
| +In to -In |
-1.0 to 60.0 |
Vdc |
|
| +In to -In |
100 |
Vdc |
For 100 ms |
| PC to -In |
-0.3 to 7.0 |
Vdc |
|
| VC to -In |
-0.3 to 19.0 |
Vdc |
|
| +Out to -Out |
0.1 to 60.0 |
Vdc |
|
| Isolation voltage |
2.250 |
Vdc |
Input to Ouput |
| Output current |
6.3 |
A |
Continuous |
| Peak output current |
9.4 |
A |
For 1 ms |
| Output power |
337 |
W |
Continuous |
| Peak output power |
505 |
W |
For 1 ms |
| Case temperature |
208 |
|
During reflow |
| Operating junction temperature(1) |
-40 to 125
-55 to 125
|
|
T - Grade
M - Grade |
| Storage temperature |
-40 to 150
-65 to 150 |
|
T - Grade
M - Grade |
Note:
(1) The referenced junction is defined as the semiconductor having the highest temperature. This temperature
is monitored by a shutdown comparator.
DescriptionThe V048K480T006 V•I Chip Voltage Transformation Module (VTM) excels at speed, density and efficiency to meet the demands of advanced power applications while providing isolation from input to output. It achieves a response time of less than 1 s and delivers up to 6.3 A in a volume of less than 0.25 in3 with unprecedented efficiency. It may be paralleled to deliver higher power levels at an output voltage settable from 26.0 to 55.0 Vdc.
The VTM V048K480T006's nominal output voltage is 48 Vdc from a 48 Vdc input Factorized Bus, Vf, and is controllable from 26.0 to 55.0 Vdc at no load, and from 24.8 to 53.9 Vdc at full load, over a Vf input range of 26 to 55 Vdc. It can be operated either open- or closedloop depending on the output regulation needs of the application. Operating open-loop, the output voltage tracks its Vf input voltage with a transformation ratio, K =1 , for applications requiring an isolated output voltage with high efficiency. Closing the loop back to an input Pre-Regulation Module (PRM) or DC-DC converter enables tight load regulation.
The 48 V VTM achieves a power density of 1218 W/in3 in a V•I Chip package compatible with standard pick-andplace
and surface mount assembly processes. The V•I Chip BGA package of the V048K480T006 supports in-board mounting with a low profile of 0.16" (4 mm) over the board. A J-lead package option supports on-board surface mounting with a profile of only 0.25" (6 mm) over the board. The VTM's fast dynamic response and low noise eliminate the need for bulk capacitance at the load, substantially increasing system density while improving reliability and decreasing cost.
V048K480T006 Data Sheet
