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SRP-C HIGH CURRENT, SHIELDED POWER
INDUCTORS
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SRP0xxx SHIELDED POWER INDUCTORS
Figure 9 Presents the benefits of selecting a standard catalog transformer like the Model
HCTSM8 series
Future Trends
Working voltages of 1000V
and 1500 for transportation
applications, as well as
energy storage in industrial
installations, require isolation
testing with various levels
of test voltages according
to the relevant standards as
shown in Figure 8. The IEC
60664 standard also refers
to using partial discharge
testing to ensure there are
no defects in the insulation
such as tiny pinholes, which
would expand over time
under a strong electric field.
In fact, complying with IEC
60664 requires that designs
pass the standard of partial
discharge if the electric
field between primary and
secondary exceeds
1000V/mm and if the working
voltage exceeds 750V.
Figure 8 Electrical insulation test voltages for a 1500 V battery
Design Advantages
This application note illustrates the advantages designers can leverage by using the
HCTSM8 series transformers for module hardware energy storage applications. The
flexibility, efficiencies, low EMI, and space-saving benefits present a compelling solution
for these designs.
The Bourns® HCT series has been tested and approved by Texas Instruments in its
Model SN6501 and SN6505 series of push-pull drivers. As the range of applications
for High Voltage driven equipment in transportation and other markets increases, so
too will the demand for stable, high-quality and standardized isolated power designs in
applications such as modules in High Voltage battery or ultra-capacitor packs. Bourns
offers 11 different fully tested and AEC-Q200 compliant Model HCTSM8 series push-pull
transformer part numbers for the Texas Instrument drivers. Based on Bourns' advanced
power transformer design, the HCTSM8 series delivers the right combination of isolated
power with low-voltages for energy storage gate drivers, microcontrollers, battery
management ICs and many more applications. ■
