AZ7500FMTR-G1

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Mode PWM Controller
• Characteristics: High-performance, low-power consumption
• Package: Surface Mount Technology (SMT)
• Essence: Regulates and controls the output voltage of power supplies
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 8V to 35V
• Output Voltage Range: 5V to 30V
• Maximum Duty Cycle: 100%
• Oscillator Frequency Range: 50kHz to 1MHz
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AZ7500FMTR-G1 has a total of 16 pins. The pin configuration is as follows:

1. VCC: Power supply input
2. GND: Ground reference
3. COMP: Error amplifier output
4. FB: Feedback input for regulating output voltage
5. CS: Current sense input
6. RT/CT: Timing resistor/capacitor connection
7. CT: Timing capacitor connection
8. RT: Timing resistor connection
9. OSC: Oscillator timing capacitor connection
10. SYNC: Synchronization input
11. DTC: Dead time control input
12. SD: Shutdown control input
13. DRV: Gate driver output
14. OUT: Output voltage
15. VREF: Reference voltage output
16. NC: No connection

Functional Features

• Voltage mode control with adjustable duty cycle
• Internal error amplifier for precise regulation
• Overcurrent protection with current sensing
• Adjustable oscillator frequency for flexibility
• Synchronization capability for multiple ICs
• Dead time control for preventing shoot-through currents
• Shutdown control for power saving

Advantages and Disadvantages

Advantages: - High-performance voltage regulation - Low-power consumption - Wide input and output voltage range - Flexible oscillator frequency selection - Multiple protection features

Disadvantages: - Limited maximum duty cycle - Requires external components for operation - Sensitive to noise and interference

Working Principles

The AZ7500FMTR-G1 is a voltage mode PWM controller that regulates the output voltage of power supplies. It operates by comparing the feedback voltage with a reference voltage and adjusting the duty cycle of the PWM signal accordingly. The error amplifier amplifies the difference between the feedback voltage and the reference voltage, providing precise regulation. The current sense input monitors the load current and triggers overcurrent protection if necessary. The oscillator generates a periodic signal that controls the switching frequency of the power supply. By adjusting the timing resistor and capacitor, the desired frequency can be set. The gate driver output drives the power MOSFETs, controlling the power flow to the output. Various control inputs such as synchronization, dead time control, and shutdown provide additional functionality and protection.

Detailed Application Field Plans

The AZ7500FMTR-G1 is widely used in various applications, including:

1. Switching Power Supplies: It is commonly used in AC-DC and DC-DC converters to regulate the output voltage efficiently.
2. LED Lighting: The IC can be utilized in LED drivers to maintain stable and constant current for LED illumination.
3. Battery Chargers: It is employed in battery charging circuits to control the charging process and protect the batteries from overcharging.
4. Motor Control: The PWM controller can be integrated into motor control circuits to regulate the speed and direction of motors.
5. Audio Amplifiers: It can be used in audio amplifier circuits to provide efficient power conversion and regulation.

Detailed and Complete Alternative Models

1. SG3525: A similar voltage mode PWM controller with adjustable frequency and duty cycle.
2. UC3842: A popular PWM controller with integrated error amplifier and protection features.
3. TL494: An IC that combines a PWM controller and a voltage reference for power supply applications.
4. IRS2153D: A high-voltage, self-oscillating half-bridge driver IC suitable for various power supply designs.

These alternative models offer similar functionality and can be considered as substitutes for the AZ7500FMTR-G1 in different applications.

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