Tune that dial - Index of

Mid-power 24-Vin maxi modules
Vicor announces the addition of
eight mid-power Maxi DC-DC converters
to the 24 Vdc input family:
a 3.3-Vout, 200-W model and 300-
W models at 5, 12, 15, 24, 28,
36, and 48-Vout. The modules —
which incorporate Vicor’s patented
low-noise Zero-Current and Zero-
Voltage Switching (ZCS/ZVS) topology
— are appropriate for industrial
or process control, distributed
power, medical, ATE, communications,
defence, and aerospace applications.
With switching frequencies
up to 1MHz, the 24Vdc family
provides rapid transient response
well suited for RF applications.
The new products provide design-
12/2006 - elektor electronics
ers who do not need the full-power
capability of a 24V Maxi module
with a mid-power option, with all of
the functionality and configurability
of the high power models. In addition,
low-noise ZCS/ZVS greatly
reduces the design effort and filtering
costs required for power converters
to meet agency conducted
emissions requirements.
The modules, which are available
in RoHS compliant models, are a
compact 117 x 56 x 12.7 mm in
size, with a height above board
of 10.9 mm.
With these new models, the 24 Vin
Maxi family now comprises 16
models with output voltages from
3.3 to 48 Vdc and power levels
from 200 to 400 W. The converters
operate from 24 V nominal input,
with an input range of 18 V
to 36 V. Efficiencies range up to
88% for the higher output voltages.
These models are available in
five different environmental grades,
with six different pin options and
three choices of baseplate. They
8-bit microcontrollers with integrated Ethernet peripheral
Microchip announces a family
of the world’s smallest 8-bit microcontrollers
with an integrated
IEEE 802.3-compliant Ethernet
communications peripheral. The
PIC18F97J60 family is optimized
for embedded applications, and
has an on-chip Medium Access
Controller (MAC) and Physical
Layer Device (PHY).
By integrating a 10BASE-T Ethernet
controller onto a 10 MIPS PIC18
microcontroller with up to 128
kBytes of Flash program memory,
Microchip is providing embedded
systems designers with a simple,
cost-effective single-chip remotecommunication
solution for a wide
range of applications. Microchip
also offers a free TCP/IP software
stack to reduce development time.
Ethernet is the leading networking
technology for local area networks
(LANs), and it can be used to connect
embedded devices through a
LAN to the Internet. Ethernet’s infrastructure,
performance, interoperability,
scalability and ease of
development have made it a standard
choice for such embedded
communications.
Any embedded application that
requires Ethernet connectivity can
take advantage of the new ninemember
PIC18F97J60 microcontroller
family. Such applications
can include Industrial Automation
(e.g. industrial control, power-supply
monitoring, network/server
monitoring and environmental
monitoring); Building Automation
(e.g. fire & safety, access control,
security panels, lighting control
and VoIP intercoms).
Key features of the new family
include:
• Seamless Migration: add Eth-
can be configured in any combination
in Vicor’s Custom Module
Design System.
A datasheet is available on:
www.vicorpower.com/library/
technical_documentation/
datasheets/2nd_gen/.
www.vicoreurope.com
(067227-V)
ernet to existing PIC18 designs
with minimal cost and development
time.
• IEEE 802.3-Compliant: on-chip
10BASE-T MAC and PHY provide
reliable packet-data transmission
and reception.
• Dedicated 8-kByte Ethernet Buffer:
enables efficient packet storage,
retrieval and modification,
and reduces the demand on the
integrated microcontroller.
• 128 kBytes of Flash and 4
Kbytes SRAM: to accommodate
the TCP/IP stack and Web server,
leaving ample space for application
code.
The PIC18F97J60 PICDEM.net
2 Development Board (part #
DM163024) has been created
specifically to assist development
with these new integrated devices.
In addition, the latest version of Microchip’s
free PIC18 TCP/IP Ethernet
Stack can be downloaded at
www.microchip.com/tcpip . The
new family is also supported by
Microchip’s suite of development
tools, including the MPLAB® VDI
Visual Device Initializer, Application
Maestro software, MPLAB
C18 C compiler and the MPLAB
ICD 2 in-circuit debugger.
The new PIC devices are all offered
in RoHS-compliant TQFP
packages.
www.microchip.com/ethernet
(067227-II)
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