Ideal Diode Bridge Thermograph with 24VIN AC, 9.75A DC Load on Same PCB 50.0 80.0 >80°C 35°C 25.0 SBM1040 (×4) DIODE BRIDGE 25.0 LT4320+2.5mΩ RDS(ON) (×4) MOSFET BRIDGE Active Diode Bridge Controller Minimizes Voltage Drop and Heat Sinking Requirements Temperature Rise vs Load Current 90 Features 80 Low Loss Replacement for Diode Bridge Rectifier Maximizes Power Efficiency and Available Voltage Minimizes Heat to Ease Thermal Design 9V to 72V, DC to 600Hz Operation Controls N-Channel MOSFETs –40°C to 85°C Guaranteed Temperature Range 8-Pin 3mm × 3mm DFN and 12-Lead MSOP Packages n n n n n n TEMPERATURE RISE (°C) n 70 60 DIODE SBM1040 50 40 30 20 2.5mΩ RDS(ON) MOSFET + LT4320 10 0 L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 0 2 4 6 CURRENT (A) 8 10 LT4320 Ideal Diode Bridge Controller TOP BOTTOM DC1823A Demonstration Circuit: 1.2kW Ideal Diode Bridge Rectifier Diodes (B360B) MOSFETs (19mΩ R DS(ON)) Diode Bridge LT4320 Ideal Diode Bridge >80°C MOSFET BSZ110N06NS3 31°C BSC031N06NS3 PSMN040-100MSE Operating Voltage Load Current Power Loss Power Loss 55V DC 3.5A 0.22W 4.2W 24V AC 1.5A 0.13W 1.9W 55V DC 30A 4.5W 36W 24V AC 10A 1.6W 12W 72V DC 2A 0.24W 2.4W Condition: 13V DCIN, 3A Load on Same PCB Scan to Watch Video video.linear.com/136 www.linear.com/4320 n 1-800-4-LINEAR 0513