| Input Type | V IN (MIN) (V) |
V IN (MAX) (V) |
IOUT (A) |
Single/Multiple Output |
VOUT (V) |
POUT (W) |
Isolated/Non-Isolated | Topology |
|---|---|---|---|---|---|---|---|---|
| DC | 17 | 60 | 1 | Single | 24 | 24 | Isolated | Flyback |
The MAXREFDES1085 is a miniature, 24V output, isolated power supply that can deliver up to 1A of load current. The design uses the MAX17596 peak-current-mode controller in discontinuous-conduction mode (DCM) flyback topology running at 125kHz. The input voltage range of the MAX17596 is 4.5V to 36V. However, an extra bias winding from the transformer is used to power the controller. This allows the input operating voltage to go up to 60V for this design.
The transformer provides a galvanic isolation of 1500VRMS between the primary and the secondary. In addition, an optocoupler is used to provide secondary side feedback to the controller for voltage regulation while maintaining isolation. This document also discusses a step-by-step procedure to implement this reference design and presents design equations for the calculation of all the design parameters. These equations show how to calculate the component values to allow users to modify this design for their applications.
This board is not available for purchase.
This document describes the hardware shown in above. It provides a detailed systematic technical guide to designing a DC-DC discontinuous conduction mode (DCM) flyback using Maxim’s MAX17596 current-mode controller. The power supply has been built and tested, details of which follow later in this document.
| Devices | Class | introduce | Datasheet |
|---|---|---|---|
| MAX17596 | Peak-Current-Mode Controllers for Flyback and Boost Regulators | Download |
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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.
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