MAX5974D (4)
MAX5974D is available from Analog Devices at Xecor. Designed for active-clamped, current-mode PWM control in Power-over-Ethernet (PoE) powered device (PD) applications, the MAX5974D offers features such as peak current-mode control, programmable switching frequency up to 600kHz, and spread-spectrum operation for low EMI. Available in a compact 3mm x 3mm, 16-pin TQFN-EP package, it is ideal for applications like IP phones, security cameras, wireless access nodes, and high-power PDs beyond the 802.3af/at standard. Whether used in telecommunications or industrial systems, this series ensures high efficiency, scalability, and robust performance for demanding applications. Xecor is an authorized distributor for Analog Devices. Please view our extensive selection of the MAX5974D series below.
| Part Number | Description | Package | Inventory | Add To Bom |
|---|---|---|---|---|
| MAX5974DATE+ | High-speed, high-density controller for precise voltage and current contro | TQFN EP-16 | 7,854 | |
| MAX5974DATE+T | Current Mode PWM Controller MAX5974DATE+T regulates currents up to 1A across a frequency spectrum spanning from 100kHz to 600kHz | TQFN-16 | 3,954 | |
| MAX5974DETE+T | 16-pin TQFN EP packaged Current Mode PWM Controller designed for 1A output | TQFN-16 | 5,974 | |
| MAX5974DETE+ | Accurate current sensing and flexible pulse-width modulation enable precise power management in high-reliability systems | TQFN-16 | 8,356 |
Key Featrues
Peak Current-Mode Control with Active-Clamped Forward PWM Controller: This feature ensures precise current regulation and efficient power conversion, making it ideal for high-power PoE applications. It enhances performance by minimizing losses and improving stability in forward converter designs.
Regulation Without Optocoupler (MAX5974A/MAX5974B): By eliminating the need for an optocoupler, this feature simplifies circuit design, reduces component count, and lowers costs while maintaining accurate voltage regulation, improving overall system reliability.
Programmable Frequency Dithering for Spread-Spectrum Operation: This feature reduces electromagnetic interference (EMI) by spreading the switching frequency spectrum, enabling compliance with stringent EMI standards and improving compatibility in noise-sensitive environments.
Frequency Foldback for High-Efficiency Light-Load Operation: This feature optimizes efficiency during light-load conditions by reducing the switching frequency, minimizing power losses, and extending battery life in portable or low-power applications.
Cycle-by-Cycle Peak Current-Limit with 35ns Propagation Delay: This fast-acting protection mechanism ensures robust overcurrent protection, preventing damage to the converter and connected devices while maintaining high reliability in demanding applications.
Regulation Without Optocoupler (MAX5974A/MAX5974B): By eliminating the need for an optocoupler, this feature simplifies circuit design, reduces component count, and lowers costs while maintaining accurate voltage regulation, improving overall system reliability.
Programmable Frequency Dithering for Spread-Spectrum Operation: This feature reduces electromagnetic interference (EMI) by spreading the switching frequency spectrum, enabling compliance with stringent EMI standards and improving compatibility in noise-sensitive environments.
Frequency Foldback for High-Efficiency Light-Load Operation: This feature optimizes efficiency during light-load conditions by reducing the switching frequency, minimizing power losses, and extending battery life in portable or low-power applications.
Cycle-by-Cycle Peak Current-Limit with 35ns Propagation Delay: This fast-acting protection mechanism ensures robust overcurrent protection, preventing damage to the converter and connected devices while maintaining high reliability in demanding applications.
Applications
Active-Clamped Forward DC-DC Converters: The MAX5974 is ideal for controlling active-clamped, current-mode PWM forward converters in Power-over-Ethernet (PoE) powered device (PD) applications. Its peak current-mode control and programmable frequency dithering ensure efficient and low-EMI operation, making it suitable for high-power DC-DC conversion in industrial and telecom environments.
High-Power PD (Beyond the 802.3af/at Standard): The MAX5974 is well-suited for high-power PoE applications that exceed the 802.3af/at standards. Its internal 1% error amplifier and programmable feed-forward maximum duty-cycle clamp ensure precise regulation and robust performance, making it ideal for advanced PoE systems in enterprise and industrial settings.
IP Phones: The MAX5974 provides reliable power management for IP phones in PoE networks. Its fast cycle-by-cycle peak current-limit and output short-circuit protection with hiccup mode ensure safe and efficient operation, making it a dependable choice for VoIP communication systems in office and remote work environments.
Security Cameras: The MAX5974 is perfect for powering security cameras in PoE-enabled surveillance systems. Its frequency foldback for high-efficiency light-load operation and reverse current limit to prevent transformer saturation ensure consistent and reliable performance, making it ideal for 24/7 monitoring applications in both indoor and outdoor settings.
High-Power PD (Beyond the 802.3af/at Standard): The MAX5974 is well-suited for high-power PoE applications that exceed the 802.3af/at standards. Its internal 1% error amplifier and programmable feed-forward maximum duty-cycle clamp ensure precise regulation and robust performance, making it ideal for advanced PoE systems in enterprise and industrial settings.
IP Phones: The MAX5974 provides reliable power management for IP phones in PoE networks. Its fast cycle-by-cycle peak current-limit and output short-circuit protection with hiccup mode ensure safe and efficient operation, making it a dependable choice for VoIP communication systems in office and remote work environments.
Security Cameras: The MAX5974 is perfect for powering security cameras in PoE-enabled surveillance systems. Its frequency foldback for high-efficiency light-load operation and reverse current limit to prevent transformer saturation ensure consistent and reliable performance, making it ideal for 24/7 monitoring applications in both indoor and outdoor settings.
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