Power chips cut the cost of charger designs
Power Integrations
LinkSwitch-LP
Power Integrations has introduced a new family of ICs designed for use in ultra-low-cost battery chargers.
Power Integrations has introduced a new family of ICs designed for use in ultra-low-cost battery chargers.
The new LinkSwitch-LP family offers the simplest energy-efficient replacement for unregulated line-frequency transformers with up to 3W of output power.
Such chargers are commonly sold with products such as cellphones, cordless phones, portable audio players, shavers and other personal electronics.
Chargers using LinkSwitch-LP require just 14 components - the lowest component count available for energy-efficient switched-mode chargers.
"Recent energy-efficiency standards practically eliminate the use of linear-transformer-based external power supplies in key markets such as California", noted Doug Bailey, Vice President of Marketing for Power Integrations.
"LinkSwitch-LP is ideal for designers whose mandate is to meet these standards at the lowest possible cost.
"Chargers using LinkSwitch-LP are vastly simpler than discrete designs, which typically contain dozens of components", Bailey continued.
"LinkSwitch-LP also offers integrated energy-efficiency and safety features that are either unavailable in discrete designs or, at best, require additional components and design effort".
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 265V AC and achieve an extremely low no-load power consumption of less than 150mW at 265V AC.
The simple on/off control scheme of LinkSwitch-LP provides constant efficiency even at light loads, enabling easy compliance with recent efficiency standards.
LinkSwitch LP is available in lead-free, plastic through-hole DIP8 and surface-mountable SMD8 packages.
Pricing in 1000-piece quantities for the LNK562PN, a 1.9W part in a DIP8 package, is $0.45 each.
The LNK564PN, a 3W part, is priced at $0.49 each.
Small quantities of each type are available from factory stock, with production quantities available 4 weeks ARO.
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