500 to 2.6kW Planar Transformers
Description
Payton SIZE 250 provides a patented planar isolation solution for high power applications. It offers high efficiency, low EMI, excellent repeatability, low profile, and weight. The operating temperature range is -40°C to +130°C.
Transformer Application
| POWER CAPACITY | DIMENSIONS (mm) | TYPICAL WEIGHT | DIELECTRIC ISOLATION | OPERATING VOLTAGE | OPERATING CURRENT (RMS) |
|---|---|---|---|---|---|
| 500W, forward at 150 kHz 2.6kW, full bridge at 200 kHz | L=50-90 W=44-70 H=10-30 | 150 gr. | 500 VDC-4k Vrms | 500 Vpeak max. | 200 A max. |
- Typical efficiency: 97-99%
- Recommended frequency range: 100 kHz - 2.5 MHz.
- Topologies (in order of preference): Full bridge; Half bridge; Push-Pull; Forward; Flyback; Boost; Buck; Resonant topologies.
- Mounting Options: a. Horizontal, b. Vertical
Inductor Application
| STANDARD AL(nH/t2) | 1600 | 1000 | 630 | 400 | 315 | 250 | 160 |
|---|---|---|---|---|---|---|---|
| TYPICAL VALUE OF MAX. Amper Turns | 37 | 64 | 124 | 166 | 210 | 274 | 390 |
AL values not listed are available upon request.
Typical Thermal Impedance For Different Cooling Conditions
| NATURAL COOLING (Hot Spot - Air) | BLOWING AIR 3m/sec (Hot Spot - Air) | ONE SIDE HEATSINK (Hot Spot - Heatsink) | TWO SIDES HEATSINK (Hot Spot - Heatsink) |
|---|---|---|---|
| 9 °C/W | 5.5 °C/W | 3.4 °C/W | 1.7 °C/W |
EXAMPLE: Transformer Type T250 AC P.N. 501044
This T250AC-14-2, high power, high input voltage, high frequency, small dimensional planar transformer is developed for a high power density DC-DC converter, providing the following specifications:
| Transformer Specifications | Value |
|---|---|
| Total output power | 2000 W (26-30Vdc/76.9-66.65 Adc) |
| Operating frequency | 100 kHz |
| Input voltage range | 250-430 V. |
| Topology | Full bridge, current doubler |
| Max. Volt-Sec. product | 2362 V- µSec |
| Duty cycle | 0.96 max. |
| Primary current | 9.6 Arms max. (10.5 a peak) |
| Primary to Sec. ratio | 14:2 |
| (sec. current, max. - 76.9 Arms) | |
| Dielectric strength pri. to sec.+core | 3500 Vrms |
| sec. to core | 1000 Vrms |
| Ambient temperature | -40 °C to +85 °C |
| Total losses (With both sides 70 °C heat sink) | 21W |
| Hot spot temperature (With both sides 70 °C heat sink) | 110 °C |
| Weight | 140 gr. |
