SOLUTIONS | Planar Transformers & Inductors SIZE 220 1kW-3kW DESIGN EXAMPLE ( 3TAUX 3T AUX TRANSFORMER DESIGN | EXAMPLE - PQC2159 ui z o 5 LJ LL-LJ LU CL cn —1 < LJ QC I— LJ LD —I LU Topology Push Pull Output Voltage/Current After Rectification Ns1+Ns2 (320W Nom. Power) 13VDC/24.6A Efficiency At Full Power (Calc.) 99% (3.2W losses) Mounted On Heatsink With Max. Temp. +90°C Temp. Rise Hot Spot External Heatsink, Max. +30°C Minimum Isolation Voltage Primary To Core, Secondary Ns1 And Naux1 1500VAC Leakage Inductance Np1+Np2/Ns1+Ns2 Shorted, Typ. 150nH NOTES: 1) FOR OPTIMAL PERFORMANCE A THERMALLY CONDUCTIVE SUBSTRATE BETWEEN FERRITE AND HEATSINK SHOULD BE UTILIZED 2) PATENTED TERMINALS AVAILABLE FOR SHIELDING ON HIGH CURRENT WINDING

TRANSFORMER DESIGN | EXAMPLE - PQC1834 ELECTRICAL SPECIFICATIONS Topology Full Bridge ZVS Output Voltage/Current After Rectification 800W (320VDC/2.5ADC) Turns Ratio - Np/Ns 5T/40T Duty Cycle, Max. 2.5A Operation 88% Efficiency At Full Output 2.5A Operation (Calc.) 99.25% (6W losses) External Heatsink Temperature Max. +90°C Temp. Rise Hot Spot External Heatsink, Max. +20°C (2.5A operation) Transformer Clamped To Heatsink Minimum Isolation Voltage Primary To Secondary And Core 1000VAC Leakage Inductance 3-4/1-2 Shorted, Typ. 8.0pH Leakage Inductance 1-2/3-4 Shorted, Typ. 125nH NOTES: 1) FOR OPTIMAL...

SOLUTIONS | Planar Transformers & Inductors SIZE 220 1kW-3kW DESIGN EXAMPLE INDUCTOR DESIGN | EXAMPLE - PQC2039 Inductance At Rated Current Rated Current Ripple Frequency Minimum Isolation Voltage (Winding To Core) Temp. Rise Hot Spot External Heatsink, Max. +40°C ) FOR OPTIMAL PERFORMANCE A THERMALLY CONDUCTIVE Heatsink Temperature Max. +65°C SUBSTRATE BETWEEN FERRITE AND HEATSINK SHOULD BE UTILIZED 2) PATENTED TERMINALS AVAILABLE FOR SPLITTING HIGH Resistance Max. 1mOhm CURRENT WINDING Total Losses 10W