MAXREFDES1167, 15V/200mA or 12V/100mA, Iso-Buck DC-DC Converter Reference Design Using the MAX17681A
Reference Design using part MAX17681AATB+ by Analog Devices
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For End Products
- DC to DC Power Supply
Description
- MAXREFDES1167, Reference Design for the MAX17681/MAX17681A is a high-voltage, high-efficiency, iso-buck DC-DC converter designed to provide isolated power up to 5W. The device operates over a wide 4.5V to 42V input and uses primary-side feedback to regulate the output voltage. The MAX17681/MAX17681A uses peak-current-mode control. Low-resistance, on-chip MOSFETs ensure high efficiency at full load while simplifying the PCB layout. The MAX17681/MAX17681A devices generate a well-regulated primary side voltage, which is then scaled by a suitable transformer turns ratio to derive isolated secondary output rails. While both the MAX17681 and MAX17681A support primary side overcurrent protection, the MAX17681A is an enhanced design that also supports robust secondary-side overcurrent protection
Key Features
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Conversion TypeDC to DC
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Input Voltage17 to 36 V
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Output Voltage12|15 V
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Output Current0.1@12V|0.2@15V A
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Output Power1.2|3 W
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Efficiency90 %
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TopologyIso-Buck
Featured Parts (4)
| Part Number | Manufacturer | Type | Description | |||
|---|---|---|---|---|---|---|
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MAX17651AZT+ | Analog Devices | Linear Regulators | LDO Regulator Pos 0.6V to 58V 0.1A 6-Pin TSOT-23 T/R | Buy | |
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MAX17651AZT+T | Analog Devices | Linear Regulators | LDO Regulator Pos 0.6V to 58V 0.1A 6-Pin TSOT-23 T/R | Buy | |
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MAX17681AATB+ | Analog Devices | DC to DC Converter and Switching Regulator Chip | Conv DC-DC 4.5V to 42V Synchronous Step Down Single-Out 0.9V to 40.32V 5W 10-Pin TDFN EP T/R | Buy | |
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MAX17681AATB+T | Analog Devices | DC to DC Converter and Switching Regulator Chip | Conv DC-DC 4.5V to 42V Synchronous Step Down Single-Out 0.9V to 40.32V 5W 10-Pin TDFN EP T/R | Buy | |