MAX5974AETE+T

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MAX5974AETE+T

IC OFFLINE SWITCH FWD 16TQFN

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規格

Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
OutputIsolation Isolated
InternalSwitch(s) No
Topology Forward
Voltage-StartUp 16 V
Voltage-Supply(Vcc/Vdd) 7V ~ 26V
DutyCycle 80%
Frequency-Switching 100kHz ~ 600kHz
FaultProtection Current Limiting, Over Temperature, Short Circuit
ControlFeatures EN, Frequency Control, Soft Start, Sync
OperatingTemperature -40°C ~ 85°C (TA)
Package/Case 16-WFQFN Exposed Pad
SupplierDevicePackage 16-TQFN (3x3)

概述

Description

The MAX5974AETE+T is a highly integrated controller designed by Maxim Integrated (now part of Analog Devices) for use in isolated power supply applications. It is specifically utilized in power-over-Ethernet (PoE) powered devices and high-efficiency, isolated, synchronous flyback converters. This IC provides essential features such as pulse-width modulation (PWM) control, which ensures efficient energy conversion, and it supports both continuous conduction mode (CCM) and discontinuous conduction mode (DCM).
Key features of the MAX5974A include programmable frequency, soft-start capability, and a wide input voltage range, providing flexibility and control for various power supply designs. The device also integrates a high-voltage start-up circuit and supports both primary-side regulation (PSR) and secondary-side regulation (SSR), which helps in simplifying design and improving performance. Additionally, the MAX5974A offers features like cycle-by-cycle current limiting and thermal shutdown for enhanced protection.
This IC is typically used in applications that demand efficient energy management, robust protection, and compliance with PoE standards, making it a popular choice for modern networking and telecommunications equipment.

Features

The MAX5974AETE+T is a high-performance controller designed for use in isolated power-supply applications. Some key features include:
1. Active-Clamp Forward Converter: It supports an active-clamp forward converter topology, which enhances the efficiency and performance of power supplies.
2. Integrated High-Side Driver: The device includes an integrated high-side driver, which simplifies design and reduces the need for additional components.
3. Wide Input Voltage Range: It operates across a wide input voltage range, making it versatile for various power supply designs.
4. Programmable Switching Frequency: The switching frequency is programmable up to 1MHz, allowing for flexibility in design and optimization of magnetic components.
5. Current-Mode Control: The controller uses current-mode control, which provides improved loop response and simplified feedback loop compensation.
6. Protection Features: It includes over-current protection, over-voltage protection, and thermal shutdown, enhancing the safety and reliability of the power supply.
7. Soft-Start Capability: The soft-start feature reduces inrush current during startup, preventing damage to components.
8. Compact Package: The device comes in a compact TQFN package, suitable for space-constrained applications.
These features make the MAX5974AETE+T ideal for efficient and reliable power supply designs in telecom, datacom, and industrial applications.

Package

The MAX5974AETE+T is a power management integrated circuit from Maxim Integrated. The package type is a 16-pin TQFN (Thin Quad Flat No-leads) with a 5mm x 5mm dimension. The "+T" typically indicates a tape and reel packaging for automated manufacturing processes.

Pinout

The MAX5974AETE+T is a high-performance power-supply controller designed for applications such as power-over-Ethernet (PoE) powered devices. It typically comes in a 16-pin TQFN (Thin Quad Flat No-Lead) package. The key functions of the MAX5974AETE+T include:
1. Current-Mode PWM Controller: It provides peak current-mode control for power conversion efficiency.
2. Programmable Frequency: The controller allows frequency adjustments to optimize performance.
3. Integrated Startup Circuitry: This feature facilitates easier and more efficient power-up sequences.
4. Feed-forward Voltage Mode: Enhances response to input voltage changes.
5. Synchronization Capability: Can be synchronized to an external clock for the operation of multiple power supplies.
6. Overvoltage Protection: Protects the power supply from voltage spikes.
7. Thermal Shutdown: Prevents damage from overheating.
These features enable designers to build robust power supplies for various applications requiring efficiency and protection. The 16-pin configuration supports various functionalities essential for PoE applications.

Manufacturer

The MAX5974AETE+T is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company specializing in the design, manufacturing, and marketing of a broad range of integrated circuits. The company provides products and solutions for analog and digital signal processing and has a strong focus on serving industries such as communications, healthcare, automotive, and industrial automation.

Application

The MAX5974AETE+T is a PWM controller used in Power-over-Ethernet (PoE) applications. It is specifically designed for power devices (PDs) to facilitate efficient power conversion from the PoE source. Key application areas include powered devices in IP phones, wireless access points, IP cameras, and other networked devices that require efficient power management and conversion over Ethernet connections. The controller supports both isolated and non-isolated converter topologies, making it versatile for various PoE-enabled electronic equipment.

Equivalent

The MAX5974AETE+T is a Power over Ethernet (PoE) controller designed by Maxim Integrated. Equivalent products are other PoE controllers with similar specifications, such as the TPS23753A from Texas Instruments, LT4276 from Analog Devices, and the Si3402-B from Silicon Labs. When selecting an equivalent, ensure compatibility with your design's specific requirements, such as voltage range, current capacity, and features like integrated switching regulators or auxiliary power support.

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