Buck controller enables direct step-
Intersil Corporation announced the first 60 V
synchronous buck controller able to bypass the
intermediate step-down conversion stage traditionally
employed in industrial applications. The ISL8117
synchronous step-down PWM controller’s low duty
cycle (40ns minimum on time) enables the direct
step-down conversion from 48 V to a 1 V point-of-load. This technical achievement makes it possible for
designers to reduce system complexity and solution
cost in industrial, factory automation, medical and
communications infrastructure applications. The
component reduces solution footprint and simplifies
design without compromising performance. Default
design values for commonly used functions and
wide Vin and Vout reduce the number of external
components compared to competing solutions.
For more information, visit www.intersil.com.
Output DC-DC converters target low power
Artesyn Embedded Technologies launched its lowest power output
DC-DC converters, targeting a diverse range of low power applications,
including data communication, telecommunication and computer
peripheral equipment, industrial automation and mobile battery-powered systems. The new Artesyn ATA series of 3 watt isolated DC-DC
converters comprises 16 variants, each of which is available in a mini
dual-in-line package for through-hole mounting or a mini surface-mount
package. All ATA series converters feature ultra-wide 4:1 inputs; eight of
the models have 9–36 V inputs and the other eight have 18–75 V inputs.
Within each of these two categories, there is a choice of five single
output models, offering voltages of 3. 3 V, 5 V, 12 V, 15 V, or 24 V, and
three dual output models offering +5/- 5 V, +12/- 12 V, or +15/- 15 V.
For more information, visit www.artestyn.com.
Wide input voltage range of 4. 5 V to 60 V covers
all standard input rails including 5 V, 12 V, 24 V,
36 V, 42 V, and 48 V.
Offering up to 80 percent conversion efficiency, the
converters use 350 kHz fixed frequency switching
to minimize the need for external EMI filtering.
The controllers primary-side regulated sensing methodology
eliminates expensive and unreliable optocouplers, replacing
them in the feedback loop with a simple transformer winding.
Reference design demonstrates industrial
Power Integrations 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. 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.