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Introduction
P
roviding isolated low-voltage bias power to
ICs such as microcontrollers, analog-to-digital
converters, isolated gate drivers, or voltage
monitoring ICs in High Voltage systems is usually
accomplished with an isolated DC-DC converter. If the
High Voltage system is spread out over several modules,
the architecture may call for a parallel DC bus on the
low-voltage side with multiple isolated low-power DC-DC
converters for each module. Because it is used multiple
times in this scenario, an efficient and cost-effective
topology is the best approach.
This application note highlights the design benefits of
using push-pull transformers that are proven solutions
for these situations. Used as an example is the Bourns®
Model HCTSM8 series transformer, which is AEC-Q200
compliant and available with a wide range of turns
ratios as standard. Multiple turns ratios are an important
feature enabling the same basic circuit topology to be
replicated across a system with the same components
and PCB layout. With a transformer series like the Model
HCTSM8, designers are able to select the right reinforced
transformer part number based on the specified output
voltage for powering a microcontroller or an isolated IGBT
gate driver.
How to Select the Right
Reinforced Transformer
for High Voltage Energy
Storage Applications
