Ideal Diode Bridge

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