input type | V IN (minimum) (V) |
V IN (maximum) (V) |
I OUT (A) |
Output channel | V OUT (V) |
P OUT (W) |
Topology |
---|---|---|---|---|---|---|---|
DC | 17 | 36 | 0.2 | single output | 15 | 3 | ISO-BUCK |
The MAXREFDES1167 is a high-efficiency, iso-buck DC-DC power module based on the MAX17681. It accepts an input voltage range from 17V to 32V and adjusts the output voltage through primary-side feedback. The reference design provides two output configurations: In one configuration, the output is set to 15V @ 200mA with a regulation accuracy of ±8%; in the second configuration, a post-regulator (MAX17651) is used to produce a 12V @ 100mA output with a stable output Pressure accuracy is within ±3%. This iso-buck isolated power module is available in the MAX17681 in a 10-pin (3mm x 2mm) TDFN package and the MAX17651 in a 6-pin TSOT package. The pin spacing of the MAXREFDES1167 complies with the Distributed Power Source Open Standards Alliance (DOSA) open standard for DC/DC module power supplies. Two transformer options are provided, one is from Wurth; the other is from Chinese transformer manufacturer HanRun, which is convenient for users to choose. The reference design provides 1500V electrical isolation.
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This reference design introduces the MAXREFDES1167 hardware circuit design and provides detailed technical guidance for designing iso-buck converters using Maxim's MAX17681A current-mode controller. The power supply has been built and tested.
Devices | Class | introduce | Datasheet |
---|---|---|---|
MAX17651 | 4V to 60V, 100mA, ultra-low quiescent current, linear regulator | Download | |
MAX17681 | Iso-Buck DC-DC Converter | Download |
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