Behind The Mystery of Electromagnetic Compatibility Design 24
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WCAP-CSGP
General-Purpose
MLCCs
WE-MPSA & WE-MPSB
Multilayer Ferrite Beads
Würth Elektronik Solution up to 6W (10W)
The high-performance bipolar isolated auxiliary power supply design
of Würth Elektronik features the following specifications:
■ Input voltage range: 9-18V
■ Output voltage: Bipolar +15V/-4V or Unipolar 15-20V
■ Power up to 6W
■ Peak efficiency of up to 86 percent (83 percent @ 6W)
■ Parasitic coupling capacitance less than 7pF
■ Size: 27mm x 14mm x 14 mm (L x W x H)
Over 50 percent smaller than similar DC/DC converters
currently on the market
■ Weight: <4g
■ Basic insulation for V
Bus
: 800V
■ 4000V
rms
insulation voltage Pri-sec
-4.00 V
-3.95 V
-3.90 V
-3.85 V
-3.80 V
0 W 1 W 2 W 3 W 4 W 5 W 6 W
Voltage
Output Power
Negative Rail Load Regulation @ V
IN
= 12 V
14.80 V
14.85 V
14.90 V
14.95 V
15.00 V
0 W 1 W 2 W 3 W 4 W 5 W 6 W
Voltage
Output Power
Positive Rail Load Regulation @ V
IN
= 12 V
Figure 5: Würth Elektronik reference design for a compact, isolated DC/DC
converter for HV SiC/GaN/IGBT Gate Driver (Source: Würth Elektronik Group)
With the new transformer series WE-AGDT,
Würth Elektronik is demonstrating its
innovative strength addressing the future
challenges in the power electronics field.
"
Figure 6: Voltage of Positive and Negative rails versus load power (@ V
IN
(nominal) = 12V) (Source: Würth Elektronik Group)
