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The leader in high-voltage analog
integrated circuits for power conversion, Power
Integrations, has announced a new family of ICs that enables
the design of energy-efficient, low-power and low-cost battery chargers
using only 14 components.
Introduced as the LinkSwitch-LP family, it offers the most simple,
energyefficient alternative to unregulated linefrequency transformers
with up to three watts of output power, which are commonly used
with cell phones, cordless phones, portable audio players, shavers
and other items of personal electronics.
LinkSwitch-LP eliminates a variety of components and circuitry used
in conventional chargers. Typical of these is EMI filtering, for
example, which is achieved with a single capacitor; the need for
thermal protection components is eliminated; and Eshield transformer
design means that no Y capacitor is required. Together with other
factors, these circuit economies mean that chargers using LinkSwitch-LP
require just 14 components.
LinkSwitch-LP features a 700V power MOSFET
integrated with control and fault protection circuitry on a single
silicon chip. The ICs operate across the universal input range of
85 to 265Vac and achieve an extremely low no-load power consumption
of less than 150mW at 265Vac.
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One IC eliminates circuits and
components in chargers |
The simple ON/OFF control scheme of LinkSwitch-LP
provides constant efficiency even at light loads, enabling easy
compliance with recent efficiency standards. It is available in
leadfree, plastic through-hole DIP 8 and surfacemountable SMD 8
packages.
t: (408) 414-8528
e: jshiffler@powerint.com
w: www.powerint.com
EDI-new-products-wk48-2005
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