TELECOM POWER
As data consumption such as mobile devices emerging, digital service is increased, 5G telecom infrastructure is rapidly increasing. 5G small cells and base stations are key structures for 5G infrastructure. The higher frequency, the shorter signals travel, which means mmWave 5G will require a much higher density of small cells. Therefore, energy usage will be dramatically increased with 5G infrastructure. Therefore, Telecom power supply require higher system efficiency and power density.
Topology Trend
PFC : Boost PFC → Dual-Boost Bridgeless PFC → Totem-pole PFC
DC-DC : Phase-shift full-bridge → LLC resonant converter
| Output Power | 300 W ~ 3 kW |
|---|---|
| Input / Output Voltage | 90~264VAC / 12~48VDC |
| Switching Freq. | PFC : 60 ~ 100 kHz, DC-DC : > 100kHz |
| System Requirement |
High System Efficiency / High Power Density BOM Reduction High Reliability Fan-less rectifier for BBU (Base Band Units) |
Device Solution
| System Block | Topology | Product Category | PMS Solution |
|---|---|---|---|
| PFC | Boost CCM / Interleaved PFC | 600/650V SJ MOSFETs | 600/650V e MOS |
| 650V SiC Diodes | 650V e SiC Diode | ||
| CCM Totem-pole PFC | 650V SiC MOSFETs | 650V e SiC MOSFET | |
| HV DC-DC (Primary) |
ZVS PSFB, HB / FB LLC | 600/650V SJ MOSFETs | 600/650V e MOS |
| 650V SiC MOSFETs | 650V e SiC MOSFET | ||
| HV DC-DC (Secondary) |
Synchronous Rectification | 60~150V MV MOSFETs | 60~150V e MOS |
| Dual-Boost Bridgeless PFC - Recommended Products | ||
|---|---|---|
| e MOS E7 | PMW60N099E7 *PML60N105E7 PMP60N180E7 |
600V / 99mΩ, TO-247 600V / 105mΩ, PQFN88 600V / 180mΩ, TO-220 |
| e SiC Diode | PCH65S06D1Q PCH65S08D1Q |
650V / 6A, TO-220 2L 650V / 8A, TO-220 2L |
| LLC or ZVS PSFB - Recommended Products | ||
|---|---|---|
| e MOS F7 | *PMW60N075F7 *PMW60N105F7 |
600V / 75mΩ, TO-247 600V / 105mΩ, TO-247 |
| Synchronous Rectification - Recommended Products | ||
|---|---|---|
| 150V e MOS | *PSS15N7P5G1 *PSS15N8P8G1 *PSS15N11G1 |
150V / 7.5mΩ, PQFN56 150V / 8.8mΩ, PQFN56 150V / 11mΩ, PQFN56 |
| Totem-Pole PFC - Recommended Products | ||
|---|---|---|
| e SiC MOSFET (FAST Leg) |
*PCZ65N27M1 *PCZ65N48M1 |
650V / 27mΩ, TO-247-4L 650V / 48mΩ, TO-247-4L |
| e MOS E7/F7 (SLOW Leg) |
PMW60N028E7 PMW60N040E7 *PMW60N030F7 *PMW60N043F7 *PMW65N043F7 |
600V / 28mΩ, TO-247 600V / 40mΩ, TO-247 600V / 43mΩ, TO-247 600V / 30mΩ, TO-247 650V / 43mΩ, TO-247 |
| LLC or ZVS PSFB - Recommended Products | ||
|---|---|---|
| e SiC MOSFET | *PCZ65N27M1 *PCZ65N48M1 *PCZ65N72M1 |
650V / 27mΩ, TO-247-4L 650V / 48mΩ, TO-247-4L 650V / 72mΩ, TO-247-4L |
| e MOS F7 | *PMW60N030F7 *PMW60N043F7 *PMW65N043F7 *PMW60N075F7 |
600V / 30mΩ, TO-247 600V / 43mΩ, TO-247 650V / 43mΩ, TO-247 600V / 75mΩ, TO-247 |
| Synchronous Rectification - Recommended Products | ||
|---|---|---|
| 150V e MOS | *PSS15N7P5G1 *PSS15N8P8G1 *PSS15N11G1 |
150V / 7.5mΩ, PQFN56 150V / 8.8mΩ, PQFN56 150V / 11mΩ, PQFN56 |
