The RPX series of dc-dc converter modules from RECOM are complete power modules with integrated power transistors and inductors, requiring only input and output capacitors and voltage-setting resistors to form fully functioning power regulators with various maximum current ratings up to 4 A. The RPX modules’ wide input-voltage ranges mean that they can be used in circuits with a supply voltage of 5 V, 12 V, 15 V or 24 V dc.
The RPX-1.0, RPX-1.5, RPX-2.5 and RPX-4.0 power modules are supplied in thermally-enhanced, surface-mount QFN packages that have a small footprint and offer high power density. The 3D power packaging design developed by RECOM features an integrated inductor and a control IC embedded in the substrate, reducing the system footprint. The excellent thermal performance of the RPX modules means that they can operate at temperatures up to at least 85°C without forced-air cooling.
Built-in protection functions include short-circuit protection, over-current limiting and thermal shutdown. A resistor divider on the input allows an under-voltage lockout voltage to be set to protect battery-powered supplies from over-discharge. A resistor divider on the output controls the setting of the output voltage over a very wide range, while an enable input provides for voltage supply sequencing.
Some products in the RPX series are now also offered as -Q variants, qualified to AEC-Q100 Grade 1 for operation up to 125°C. These modules include wettable flanks, which facilitate automated optical inspection of the land-grid array solder joints.
All modules are readily available on short lead times from Future Electronics.
Product Name | Current Rating (A) | Input-voltage Range (V) | Main Output-voltage Range (V) | Package Dimensions |
RPX-0.5Q | 0.5 | 4.0 to 36.0 | 0.8 to 34 | 3 mm x 5 mm x 1.6 mm |
RPX-1.0 | 1.0 | 4.0 to 36.0 | 0.8 to 30 | 3 mm x 5 mm x 1.6 mm |
RPX-1.5 | 1.5 | 4.0 to 36.0 | 0.8 to 30 | 3 mm x 5 mm x 1.6 mm |
RPX-1.5Q | 1.5 | 4.0 to 36.0 | 0.8 to 30 | 3 mm x 5 mm x 1.6 mm |
RPX-2.5 | 2.5 | 4.5 to 28.0 | 1.2 to 6.0 | 4 mm x 4.5 mm x 2.0 mm |
RPX-4.0 | 4.0 | 3.8 to 36.0 | 1.0 to 7.0 | 5.0 mm x 5.5 mm x 4.1 mm |
Module Part Number: RPX-4.0-EVM-1
The RPX-4.0-EVM-1 generates a constant output voltage selectable in a range from 1.0 V to 7.0 V dc from an input in the range 4 V to 36 V dc. It has a maximum continuous output current of 4.0 A.
All the functions of the RPX-4.0 such as output voltage selection, control, power good, trim, and output sense can be evaluated with this board. The behavior in overload or over-temperature conditions can be evaluated easily. The evaluation board also contains the filter components required to meet the requirements of the EMC Class B standard.
Alternative component positions are provided to enable optimization of EMC performance depending on operating conditions and budget.
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