Output Rectification

AC/DC Solutions
Output Rectification
Output RectificationIn offline SMPS, the output stage delivers the required DC voltage to the load. The power components used in this stage are Schottky diodes, ultra-fast diodes, and, in the case of synchronous rectification, low gate charge and low RDS(on) power MOSFETs.

Up to 24V output, synchronous rectification MOSFETs offer the best efficiency, particularly at lower output voltages, while Schottky diodes are an economical high performance solution. At voltage levels higher than 24V, ultra-fast diodes offer superior performance with lower conduction and switching power losses.

Synchronous Rectification MOSFET
Designers have turned to application-optimized synchronous rectification MOSFETs to increase efficiency for lower output voltages. Low gate charge and low RDS(on) MOSFET can reduce conduction and switching losses by up to 20%.
Synchronous Rectification MOSFET Product Selector Guide

Schottky Diodes
Lambdaaa offers one of the broadest lines of Schottky rectifiers available in the industry. Lambdaaa’s Schottky packaging ranges from surface mount and axial lead types with ratings of a few amps, to large dual die modules rated in excess of 400 Amps.
Schottky Diodes Selector Guide

Ultrafast Diodes
Lambdaaa’s ultra-fast diodes offer ultra-soft recovery and have low forward voltage drop and reverse leakage, critical parameters which reduce conduction and switching losses. The ultra-soft recovery also minimizes radiated electrical noise and eliminates the risk of voltage spikes that can damage the diode or other components.
Ultra-fast Diode Product Selector Guide

Select the Schottky and ultra-fast diodes for your non-synchronous output rectification applications based on the power level.

AC/DC Converter Output Current Rating by Power Level
Dominant Topology
Flyback
Flyback/
SEF
Single Ended Forward(SEF)
SEF/DEF
Double Ended Forward(DEF)
Full Bridge/
DEF
Full Bridge
Power Range
11-50W
50-100W
101-250W
251-500W
501-750W
751-1000W
Above 1000W
Power Supply Output Voltage
Output Rectifier Typical VRRM
2V
15-20V
19TQ015
20L15T
40L15CW
65PQ015
85CNQ015
100BGQ015
125NQ015
185NQ015
185NQ015
245NQ015
185NQ015
245NQ015
185NQ015
245NQ015
3.3V
20-25V
80CPQ020
87CNQ020
82CNQ030
72CPQ030
80CPQ020
87CNQ020
82CNQ030
72CPQ030
242NQ030
182NQ030
100BGQ030
301CNQ045
175BGQ030
440CNQ030
175BGQ030
5V
30-45V
MBR1045
MBR2045CT
MBR3045WT
MBR2545CT
MBR6045WT
72CPQ030
40L45CW
MBR6045WT
72CPQ030
40L45CW
100BGQ045
MBR6045WT
182CNQ030
242NQ030
100BGQ030
242NQ030
100BGQ030
12V
100V
8TQ100
16TQ100
MBR20100CT
16TQ100
43CTQ100
43CTQ100
40CPQ100
83CNQ100
123NQ100
100BGQ100
123NQ100
100BGQ100
15V
100V
31DQ10
8TQ100
MBR20100CT
16CTQ100
43CTQ100
43CTQ100
40CPQ100
83CNQ100
43CTQ100
40CPQ100
83CNQ100
123NQ100
100BGQ100
24V
150-200V
MURD620CT
MUR820
MUR820
MUR1620CT
MUR1520
MUR3020WT
MUR3020WT
60EPU02
80EBU02
60EPU02
80EBU02
48V
200-400V
8ETH03
8ETU04
8ETU0415ETH03
16CTU04
30CPH03
30EPH03
30CPU04
60EPU04
80EBU04
60EPU04
> = 48V
200-400V
HFA08TB60
HFA15TB60
HFA30TA60C

Technical Information
Ultra-fast Recovery Diodes Meet Today’s Requirements for High Frequency Operation and Power Ratings in SMPS Applications(in .pdf format)

Contact your Local Sales Rep or our Technical Assistance Center for further information.
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