25 to 140W Planar Inductor
Description
Payton SIZE 40 provides a planar solution for low power applications (such as telecommunication) providing high efficiency, low EMI, excellent repeatability, low profile and weight with an operating temperature range of -40°C to +130°C.
Transformer Application
| POWER CAPACITY | DIMENSIONS (mm) | TYPICAL WEIGHT | DIELECTRIC ISOLATION | OPERATING VOLTAGE | OPERATING CURRENT (RMS) |
|---|---|---|---|---|---|
| 30W, flyback at 100 kHz 140W, forward at 350 kHz | L=19-27 W=20 H=6-12 | 10-14 gr. | Up to 1000 Vrms | 150 Vpeak max. | 25 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) | 1000 | 630 | 400 | 315 | 160 | 100 |
|---|---|---|---|---|---|---|
| TYPICAL VALUE OF MAX. Amper Turns | 10 | 18 | 30 | 40 | 82 | 124 |
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) |
|---|---|---|---|
| 36 °C/W | 21 °C/W | 14 °C/W | 7 °C/W |
EXAMPLE: Inductor Type I40 P.N. 18822
This I40-2.4μΗ/20A, high frequency, small dimensional planar inductor is developed for a high power density DC-DC converter, providing the following specifications:
| Inductor Specifications | Value |
|---|---|
| Inductance L | 2.4 µH ±10% |
| Operating frequency | 100-400 kHz |
| DC current | 20 Adc max. |
| Peak of ripple current | 2 Apeak max. |
| Peak of total current | 22 Apeak max. |
| Dielectric strength | 500 Vdc |
| Ambient operating temperature | -10 °C to +50 °C |
| Total losses (Natural cooling) | 1.0 W |
| Hot spot temperature (Natural cooling) | 85 °C max. |
| Weight | 11 gr. |
