Topologie | Sperrwandler |
Eingangsspannung | 12 V |
Ausgang 1 | 12 V |
IC-Revision | 1 |
For this evaluation board, the PFC circuit has been implemented on a 4-layer PCB, with 2 oz copper for the outer layers and 1.5 oz copper for the inner layers. GAN039-650NTB devices by Nexperia are used for both the fast and slow switching legs. The inductor is made of a High Flux core with the inductance of 480 μH and a DC resistance of 0.025 Ω, designed to operate at 65 kHz. A simple 4 A rated high/low side driver IC (Si8273) with 0 V and 12 V as the on/off voltage levels directly drives each GaN FET. The control function is handled by a TI UCC28180 PFC controller.
Simplified driver design as standard level MOSFET gate drivers can be used:0 V to 12 V drive voltage
Gate threshold voltage VGSth of 4 V
Robust gate oxide with ±20 V VGS rating
High gate threshold voltage of 4 V for gate bounce immunity
Low body diode Vf for reduced losses and simplified dead-time adjustments
Transient over-voltage capability for increased robustness
CCPAK package technology:Improved reliability, with reduced Rth(j-mb) for optimal cooling
Lower inductances for lower switching losses and EMI
150 °C maximum junction temperature
High Board Level Reliability absorbing mechanical stress during thermal cycling, unlike traditional QFN packages
Visual (AOI) soldering inspection, no need for expensive x-ray equipment
Easy solder wetting for good mechanical solder joints
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | L (µH) | IRP,40K (A) | ISAT,30% (A) | RDC typ. (mΩ) | fres (MHz) | VOP (V) | Montageart | Vin | VOut1 (V) | IOut1 (mA) | VOut2 (V) | IOut2 (mA) | Vaux (V) | ISAT (A) | VT (V (AC)) | fswitch (kHz) | NPRI : NSEC : NAUX | L (mm) | W (mm) | H (mm) | Bauform | Muster | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
![]() | 74438323047 | SPEC | 10 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WE-MAPI SMT-Speicherdrossel | 4.7 | 1.4 | 2.3 | 338 | 35 | 80 | SMT | – | – | – | – | – | – | 1.75 | – | – | – | 2.5 | 2 | 1 | 2510 | ||
![]() | 750314352 | SPEC | 9 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WE-OLSTM Offline Flyback Transformers | 900 | – | – | – | – | – | THT | 85 - 265 V (AC) | 15 | 700 | 6 | 100 | 12 | 0.82 | 1500 | 115 | 11.9:1.33:1:2.11 | 18.5 | 16.5 | 18.8 | EE16/7/5 |
Artikel Nr. | Datenblatt | Simulation | |
---|---|---|---|
![]() | 74438323047 | SPEC | |
![]() | 750314352 | SPEC |
Muster |
---|
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | L (µH) | IRP,40K (A) | ISAT,30% (A) | RDC typ. (mΩ) | fres (MHz) | VOP (V) | Montageart | Vin | VOut1 (V) | IOut1 (mA) | VOut2 (V) | IOut2 (mA) | Vaux (V) | ISAT (A) | VT (V (AC)) | fswitch (kHz) | NPRI : NSEC : NAUX | L (mm) | W (mm) | H (mm) | Bauform | Muster |
---|