Case Study :3-1 Contribution to miniaturization / reduction for base station power supply ◆Panasonic proposal to base station High quality High performance Open mode High efficiency Low loss Low ESR High ripple Maintenance free High reliability Long life ◆Proposed case : Power supply for base station Conductive polymer hybrid aluminum capacitor AC/DC OUTPUT, DC/DC INPUT 48V Line Capacitors AL capacitor Hybrid capacitor ZA series Φ12.5x13.5mm,63V,220μF x4 pcs. Φ6.3x7.7mm,63V,22μF x2 pcs. EEEFK1J221AQ EEHZA1J220XP Mounting area 100 % (832 mm2) 13 % (108 mm2) Height 100 % (13.5 mm) 57 % (7.7 mm) Total ESR 30 mΩ (100 kHz) 12 mΩ (100 kHz) Endurance 105 ˚C, 5000 h 105 ˚C, 10000 h Total Ripple 3200mA (100kHz,105˚C) 3000mA (100kHz,105˚C) DC 48 V AC/DC DC/DC Item DC/DC B.B. Control TRX PA High performance/Miniaturization (Contribution to set miniaturization) © Panasonic Corporation DUP