Datasheet

www.microchip.com/power 13
Quarter Brick DC/DC Converter Reference Design
Microchip’s quarter brick DC/DC
converter uses a single dsPIC33F
“GS” digital power digital signal
controller (DSC) to control a phase
shifted full bridge (PSFB) topology.
Using digital control techniques the dsPIC DSC enables
efficiencies as high as 94%. The reference design
works with standard telecom inputs of 36-76V DC and
outputs 12V DC at 200W of power while conforming to
the industry standard quarter brick size.
Digital LED Lighting Development Kit
The Digital LED Lighting Development
Kit showcases the benefits of a digitally
controlled LED lighting system. A
single dsPIC33 “GS” DSC is able to
control a buck or boost power stage
to power LED strings and at the same
time implement advanced communication. The kit
includes a baseboard with a dsPIC33 “GS” DSC and
two power stage daughter cards, a buck and a boost.
Each daughter card can power either the on-board LED
strings or connect to external LED strings. The dsPIC
DSC’s digital control enables both intelligent dimming
and DMX512 communication to be done using a
singlecontroller chip.
Grid Connected Solar Micro Inverter
Reference Design
This reference design uses a single
dsPIC33F “GS” digital power DSC
to showcase a fully digital grid
connected micro inverter system. The
board works with any 220 Watt solar panel between
25 and 55V DC and Microchip offers two versions to
connect to either an 110V or 220V grid. The dsPIC33F
digitally controls the power conversion stages,
maximum power point tracking, grid fault detection and
grid synchronization through software, enabling greater
efficiency and simpler board design.
Digital HID Ballast Reference Design
Microchip’s Digital High Intensity
Discharge (HID) Ballast Reference
Design showcases the benefits digital
control can bring to an HID ballast. Using digital control
techniques a single Microchip dsPIC device is able to
control the entire HID ballast, reducing the ballast’s
components and costs.
Additional information for all reference designs is
available at: www.microchip.com/smps.
Digital Pure Sine Wave Uninterruptible Power Supply
(UPS) Reference Design
The Digital Pure Sine Wave
Uninterruptible Power Supply (UPS)
Reference Design is based on the
dsPIC33F “GS” series of digital-power
Digital Signal Controllers (DSCs). This reference design
demonstrates how digital-power techniques when
applied to UPS applications enable easy modifications
through software, the use of smaller magnetics,
intelligent battery charging, higher efficiency, compact
designs, reduction in audible and electrical noise via a
purer sine-wave output, USB communication and low-
cost overall bill-of-materials.
Digital Power Interleaved PFC Reference Design
This reference design provides an
easy method to evaluate the power,
and features of SMPS dsPIC® Digital
Signal Controllers for an Interleaved
Power Factor Correction application.
The Interleaved PFC reference design unit works with
universal input voltage range and produces a single
high voltage DC output up to 350W of power.
AC/DC Reference Design
This board is a full-featured 300W
(5V/23A and 3.3V/69A) power supply
utilizing PFC and implementing one
dsPIC SMPS device for the primary
controller and one for the secondary
controller. The board also has a universal AC input with
active power factor correction followed by two stages
of DC/DC power conversion. The first stage converts
the high-voltage DC to a 12V DC bus via a zero voltage
transition full-bridge converter incorporating secondary
side synchronous rectification.
DC/DC LLC Resonant Converter Reference Design
Using a single dsPIC33F “GS” digital
signal controller (DSC) to control an
LLC resonant topology, the DC/DC LLC
resonant converter reference design
achieves up to 95% efficiency while
providing high voltage isolation. Full digital control by
the dsPIC enables Zero Voltage Switching on the half
bridge and Zero Current Switching on the synchronous
rectifier, which in turn enables the design’s high
efficiency. The reference design takes 350-420V DC
in and converts it to 12V at 200W output power, while
maintaining 4 kV of input to output isolation.
Advanced Development Tools and Reference Designs
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