W Series for Welding Applications Datasheet by STMicroelectronics

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K17 llle.augmen‘ed
New W series
of ultrafast rectifiers
for welding applications
High-performance product series for low power consumption welders
www.st.com
In modern welding equipment,
high-power secondary
rectification causes around half
of the power losses. This is mainly
due to conduction in the diodes.
ST has developed the new W
series of ultrafast STTH rectifiers
to overcome these losses,
leveraging our long experience
with market leaders in the
welding industry.
Using platinum doping, the new
W series of high-current diodes,
from 20 A up to 200 A, are ideal
for the latest requirements in
welding equipment.
MAIN APPLICATIONS
• Secondaryrectificationin
• TIG(tungsteninertgas)
• MIG(metalinertgas)
• MMA(manualmetalarc)
• Plasmaweldingequipment
• PFCboostdiodesandfreewheeling
diodesinprimarystage
KEY FEATURES
• LowerVFtoreduceconduction
losses
• LowerIR
• Insulatedpackagesavailable
• Greenmoldingcompound
• Ribbonbonding
KEY BENEFITS
• Efficientandcost-effectivesolution
• Improvedrobustness
• Noneedforredesign
• Environmentallyfriendly
nnnnnn
EXAMPLE WITH FULL-BRIDGE FORWARD CONVERTER TOPOLOGY
W ULTRAFAST SERIES PRODUCT TABLE
Part number VRRM
(V)
IF(AV)
(A)
Common
cathode
Tj max
(°C)
VF typ
@ 150 °C
(V)
IRM typ(*)
(A)
QRR typ(*)
(µC) Package
200 V ultrafast diodes
STTH20W02CW 200 20 Yes 175 0.89 7.0 0.15 TO-247
STTH30W02CW 200 30 Yes 175 0.90 7.0 0.16 TO-247
STTH60W02CW 200 60 Yes 175 0.85 8.0 0.22 TO-247
300 V ultrafast diodes
STTH30W03CW 300 30 Yes 175 0.90 7.0 0.16 TO-247
STTH60W03CW 300 60 Yes 175 0.94 7.0 0.18 TO-247
STTH200W03TV1 300 200 No 150 0.95 9.0 0.40 ISOTOP
400 V ultrafast diodes
STTH61W04SW 400 60 No 175 0.93 19.0 1.40 TO-247
STTH100W04CW 400 100 Yes 175 0.98 15.0 0.85 TO-247
STTH200W04TV1 400 200 No 150 1.05 17.0 0.90 ISOTOP
600 V ultrafast diodes
STTH50W06SW 600 50 No 175 1.25 14.0 0.85 TO-247
STTH100W06CW 600 100 Yes 175 0.92 30.0 3.70 TO-247
STTH200W06TV1 600 200 No 150 1.00 30.0 4.60 ISOTOP
Notes:
(*) Refer to the respective datasheets for the test conditions
Primary side power section and current transformer
Secondary side
power section
MCU
Auxiliary and MCU
Voltage
control IC
Voltage control IC
PWM control IC
High side driver
High side driver
© STMicroelectronics - October 2012 - Printed in United Kingdom - All rights reserved
The STMicroelectronics corporate logo is a registered trademark of the STMicroelectronics group of companies
All other names are the property of their respective owners
For more information on ST products and solutions, visit www.st.com
Order code: FLDIODWELDING1012

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