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MAXIM INTEGRATED / ANALOG DEVICES MAX5974AETET Power-over-Ethernet PWM Controller
The MAX5974AETE+T is an active-clamped, spread-spectrum, current-mode PWM controller packaged in a 16-pin TQFN. It is designed to control wide-input-voltage, active-clamped, current-mode PWM forward converters used in Power-over-Ethernet (PoE) powered devices. Suitable for universal or telecom input ranges, this device features several enhancements for improved efficiency, including magnetizing current recycling via an auxiliary driver, programmable dead time for zero-voltage switching, and frequency foldback during light loads to reduce losses. It achieves output regulation without relying on optocouplers and supports applications such as PoE IEEE 802.3af/at powered devices, high-power PoE PDs, active-clamped DC-DC converters, IP phones, and wireless access points. Key specifications include a supply voltage range of 17V to 20V, operating temperature from -40°C to 85°C, short circuit protection with hiccup mode, adjustable switching frequency from 100kHz to 600kHz with synchronization up to 1.2MHz, programmable spread-spectrum for low EMI, dead time, soft-start, slope compensation, and maximum duty cycle limiting to 80%. Additional features include internal bootstrap UVLO with hysteresis, frequency dithering, and internal voltage regulation circuitry.
MAXIM INTEGRATED / ANALOG DEVICES MAX5974AETET Power-over-Ethernet PWM Controller Specifications:
- Package: 16-pin TQFN
- Operating Temperature: -40°C to 85°C
- Supply Voltage Range: 17V to 20V
- Switching Frequency: 100kHz to 600kHz, synchronized up to 1.2MHz
- Spread Spectrum: Programmable for low EMI
- Maximum Duty Cycle: 80%
- Dead Time: Programmable
- Soft-Start: Yes
- Slope Compensation: Yes
- Frequency Foldback: Yes
- Short Circuit Protection: Hiccup Mode
- Bootstrap UVLO: Internal with hysteresis
- Operating Power: Suitable for universal and telecom input ranges
- Application: PoE IEEE 802.3af/at powered devices, active-clamped converters
Buy the Maxim Series PoE PWM Controller: MAX5974AETET
Get the MAX5974AETET PWM controller online today to enhance your PoE powered device designs with advanced efficiency features, wide input compatibility, and robust protection modes. Designed for universal and telecom power ranges, this controller offers programmable frequency, spread-spectrum low EMI operation, and internal regulation for simplified design integration. Perfect for high-power PoE PDs, active-clamped DC-DC converters, IP phones, and wireless access points, it ensures reliable, safe operation with short circuit protection and hysteretic UVLO. Buy now for dependable, high-performance PoE solutions.
Order your Maxim Series PoE PWM Controller MAX5974AETET today and give your Ethernet powered devices the dependable, efficient performance they deserve.
Frequently Asked Questions
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How do I troubleshoot issues or seek technical support for part MAX5974AETET?
You can download the MAX5974AETET datasheet or visit the MAXIM INTEGRATED / ANALOG DEVICES website for support.
Who is the manufacturer of MAX5974AETET?
MAXIM INTEGRATED / ANALOG DEVICES