Power Integrations (Nasdaq: POWI),
the leader in high-voltage integrated circuits for energy-efficient
power conversion, today announced a new reference design (DER-479)
demonstrating an industrial power supply using the company’s LinkSwitch-4TM
family of CV/CC primary-side regulated (PSR) switcher ICs with a
1200 V bipolar junction transistor (BJT). The design supports 440 VAC
line inputs and features three outputs which combine to provide up to 11
W of highly accurate constant-voltage DC power.
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DER-479 (Photo: Business Wire)
LinkSwitch-4 controllers feature an adaptive base and emitter switched
drive scheme to boost switching performance and increase efficiency. The
advanced switching technique is especially beneficial in high-voltage
applications as it reduces slow turn-off switching losses and eliminates
BJT failures due to secondary breakdown, improving the reverse-bias safe
operating area (RBSOA) and system reliability. Additionally, the
LinkSwitch-4 controller’s primary-side regulated sensing methodology
eliminates expensive and unreliable optocouplers, replacing them in the
feedback loop with a simple transformer winding. The design uses just 50
mW under no-load conditions while maintaining a fast transient response.
The 65 kHz operating frequency minimizes transformer size, reducing
system cost and PCB footprint. LinkSwitch-4 devices also compensate for
a number of factors including: transformer inductance tolerances; input
line voltage variations; cable voltage drop; and external component
temperature variations.
Comments Silvestro Fimiani, senior product marketing manager at Power
Integrations: “Power supplies for high-voltage systems such as
three-phase meters and motor drives can be challenging to develop –
efficiency, reliability and component count often suffer in such
designs. By pairing the LinkSwitch-4 controller with a 1200 V BJT, the
designs become very straightforward and extremely reliable.”
DER-479 is freely-downloadable at http://www.power.com/der-479.
About Power Integrations
Power
Integrations, Inc. is a leading innovator in semiconductor
technologies for high-voltage power conversion. The company’s products
are key building blocks in the clean-power ecosystem, enabling the
generation of renewable energy as well as the efficient transmission and
consumption of power in applications ranging from milliwatts to
megawatts. For more information please visit www.power.com.
Power Integrations, LinkSwitch and the Power Integrations logo are
trademarks or registered trademarks of Power Integrations, Inc. All
other trademarks are the property of their respective owners.
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