500 to 5kW Planar Transformers
Description
Payton SIZE 500 provides a patented planar isolation solution for high power applications. It offers high efficiency, low EMI, excellent repeatability, low profile and weight with an operating temperature range of -40°C to +130°C.
Transfomer Application
| POWER CAPACITY | DIMENSIONS (mm) | TYPICAL WEIGHT | DIELECTRIC ISOLATION | OPERATING VOLTAGE | OPERATING CURRENT (RMS) |
|---|---|---|---|---|---|
| 500W, forward at 50 kHz 5kW, full bridge at 200 kHz | L=80-120 W=60-90 H=10-30 | 400 gr. | 500 VDC-4k Vrms | 700 Vpeak max. | 200 A max. |
- Typical efficiency: 97-99%
- Recommended frequency range: 80 kHz - 1.0 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 | 51 | 87 | 157 | 233 | 290 | 365 | 510 |
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) |
|---|---|---|---|
| 5.4 °C/W | 3.2 °C/W | 2 °C/W | 1 °C/W |
EXAMPLE: Transformer Type T500 AC P.N. 17546
This T500AC-7-2, high power, high input voltage, high frequency, small dimensional planar transformer is developed for a high power density DC-DC converter and may be used in welding applications, providing the following specifications:
| Transformer Specifications | Value |
|---|---|
| Total output power | 3900 W (26 Vdc/150 Adc) Welding duty of 50% |
| Operating frequency | 200 kHz |
| Input voltage range | 150-375 Vdc link. |
| Topology | Forward with active clamp |
| Volt-Sec. product | 460V- µSec |
| Operating Duty cycle | 0.618 max. |
| Primary current | 37 Arms (47 a peak) (for 90% power supply effic.) |
| Primary to Sec. ratio (sec. current - 118 Arms) | 3.5:1 |
| Dielectric strength pri. to sec.+core | 4000 Vrms |
| sec. to core | 1000 Vrms |
| Ambient temperature | -25 °C to +40 °C |
| Total losses (With 50 °C heat sink) | 40W |
| Hot spot temperature (With 50 °C heat sink) | 130 °C |
| Weight | 250 gr. |
