Traditional Distributed Power Solutions
Traditional designs that employ distributed ability architecture house DC-DC converters on PC boards really about the point-of-load to maximize arrangement speeds as well as efficiencies. To ability the DC-DC converters, the required AC-DC ability render alongside PFHC is typically mounted somewhere inwards the system’s enclosure, external to the primary pc-board (Figure 1).
This technique is quite reasonable for nearly applications. However, when it comes to equipment that must hold out mounted outdoors as well as occupy the smallest possible volume, at that spot are straightaway improved ability products available.
Improved Power Distribution Methods
Typical medium ability (400-700 watts) PCB mounted DC-DC converters are packaged inwards “full brick” sizes (e.g., 2.4” west x 4.6” L x 0.5” H). Influenza A virus subtype H5N1 give away of major manufacturers of DC-DC converters cause got seen the involve for, as well as are straightaway providing air-conditioning input PFHC front end ends inwards brick-formats that are PCB mountable close to the DC-DC converter(s). This has the payoff of placing all the ability components on the same pc-board thence reducing the terminate products size as well as eliminating the ability interconnect wires (Figure 2).
These AC-DC w/PFHC front-end bricks require some external components (capacitors, resistors, etc.), but the infinite required for these items is modest inwards comparing to the elimination of the external “metal boxed air-conditioning front end end”. And, these external components tin hold out robotically inserted during the production of the pc-board. An added produce goodness of utilizing these brick packages is that they tin hold out cooled without fans, past times agency of rut sinks or mutual frigidness plates (e.g., mounting the brick bases against the system’s metallic enclosure).
The Latest AC-DC Power “Brick” Solutions
Power Supply manufacturers cause got non stopped developing smaller as well as ameliorate ability solutions. In fact, inwards recent times the AC/PFHC brick mentioned higher upwards has been merged alongside a DC-DC converter to flat the ultimate ability solution; an AC/PFHC/DC integrated brick. These 2-in-1 devices cause got broad make 85 to 265 VAC inputs, right the ability factor, as well as provide the DC output(s) to the system. All this is accomplished inside the same size constraints of a unmarried “full brick” parcel criterion solely 2.4” west x 4.6” L x 0.5” H, thence providing a 50% board infinite savings (Figure 3).
These integrated 2-in-1 pcb-mounted Power Bricks are ideal for Distributed Power Architectures where POL (Point of Load) Converters are needed. Since the 2-in-1 Power Bricks provide the conversion from air-conditioning to DC (with PFHC) along alongside the needed isolation, as well as the Intermediate Bus Voltage, the role of multiple low-cost, non-isolated POL converters becomes quite practical (Figure 4).
Recent advances inwards components as well as ability pattern technologies cause got made these new
2-in-1 pcb-mount ability bricks possible. In gild to growth ability densities, exceptional Permalloy cores cause got been developed as well as employed inwards the inductors. New substrates as well as innovative transformer winding techniques cause got facilitated constituent acme compressions as well as improved thermal management. And, of course, advances inwards integrated as well as hybrid circuits cause got contributed greatly to this adjacent generation of ability products.
Applications of 2-in-1 AC-DC Power Bricks
These novel “2-in-1” AC-DC ability bricks are ideal for many outdoor as well as indoor applications including:
- Custom Power Supplies
- PCB Mounted Bulk Power for Multiple DC-DC or POL Converters
- Large LED & Liquid Crystal Displays
- Traffic Information, Control, & Signaling Equipment
- Toll Devices
- Pico & Cell Phone Repeaters
- WiFi, Telecom Sub-Stations
- Underwater Surveying Devices
- Automatic Pass-Reading-Devices for FastTrac Car Lanes
- Oil Pumping & Pipeline Monitoring Devices
- Security Systems
Lambda, a unit of measurement of TDK Corp., is currently i of the manufacturers of a novel make of integrated “single-brick” AC-DC ability bricks. These “2-in-1” pcb-mount devices are as well as so innovative, they cause got 7 patents pending.
Some of the salient features of Lambda’s single-brick AC-DC PFE Series ability modules include:
- Operates from Universal 85 to 265VAC, 47-63Hz Input
- Power Factor & Harmonic Correction Meets EN61000-3-2
- Low Profile, Single-Brick Footprint
- High Power Density (up to 129W/in3) & Efficiency (up to 90%)
- Regulated as well as Isolated DC Outputs alongside Wide Operating Temperatures (at baseplate)
- PFE500-12: 12VDC Output, 400 Watts, -40 to +85°C
- PFE500-28: 24 to 28VDC Output, 500 Watts, -40 to +100°C
- PFE500-48: 48VDC Output, 500 Watts, -40 to +100°C
- PFE700-48: 51VDC Output (semi-regulated), 714 Watts, -40 to +85°C
- ±20% Output Voltage Adjustment Range
- Over Voltage/Current/Temperature Protection
- Approved to UL/CSA/EN60950-1, CE Marked, & RoHS Compliant
- Optional Heatsinks & Evaluation Kits Available
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