Overview
The LM25037MTX/NOPB, produced by Texas Instruments, is a dual-mode PWM controller designed for implementing balanced double-ended power converter topologies such as push-pull, half-bridge, and full-bridge. This controller is versatile and can be configured for either voltage-mode or current-mode control, making it suitable for a wide range of power conversion applications. It features an ultra-wide input operating range from 5.5 V to 75 V, making it highly adaptable to various power sources. The LM25037MTX/NOPB is also qualified for automotive applications and meets the AEC-Q100 standards, ensuring reliability in harsh environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 5.5 to 75 | V |
| Output Current (Peak) | 1.2 | A |
| Operating Junction Temperature | -40 to 125 | °C |
| Package Type | TSSOP (16-pin) | - |
| Reference Voltage Output | 5 | V |
| Maximum Duty Cycle Limit | 0 to 96% | - |
| Thermal Shutdown Threshold | 165 | °C |
| Oscillator Frequency | Up to 2 MHz | - |
Key Features
- Alternating Outputs: Provides two alternating gate drive outputs, each capable of 1.2-A peak output current.
- Dual-Mode Control: Can be configured for either voltage-mode or current-mode control.
- Ultra-Wide Input Range: Operates from 5.5 V to 75 V.
- Programmable Maximum Duty Cycle Limit: Allows for adjustable duty cycle limits.
- Line Undervoltage Lockout (UVLO): With adjustable hysteresis.
- Overcurrent Protection: Features cycle-by-cycle current limit and hiccup mode fault protection with adjustable delays.
- Soft-Start and Soft-Stop: Includes programmable soft-start and soft-stop capabilities.
- Precision Reference Output: Provides a 5-V reference output.
- Thermal Shutdown: Includes thermal shutdown with a threshold of 165°C.
- Oscillator Synchronization: Supports oscillator synchronization with low-frequency lockout protection.
Applications
- Automotive Power Converters: Qualified for automotive applications and meets AEC-Q100 standards.
- Telecom Power Converters: Suitable for telecom power conversion applications.
- Industrial Power Converters: Used in various industrial power conversion scenarios.
- Push-Pull, Half-Bridge, and Full-Bridge Topologies: Ideal for implementing balanced double-ended power converter topologies.
Q & A
- What is the input voltage range of the LM25037MTX/NOPB?
The input voltage range is from 5.5 V to 75 V.
- What is the peak output current of the gate drivers?
The peak output current of the gate drivers is 1.2 A.
- What are the operating temperature ranges for the LM25037MTX/NOPB?
The operating junction temperature range is -40°C to 125°C.
- What types of control modes does the LM25037MTX/NOPB support?
The controller supports both voltage-mode and current-mode control.
- Does the LM25037MTX/NOPB have thermal shutdown protection?
Yes, it includes thermal shutdown protection with a threshold of 165°C).
- What is the purpose of the UVLO pin?
The UVLO pin is used for line undervoltage lockout with adjustable hysteresis and can also implement remote enable/disable functions).
- How does the soft-start feature work?
The soft-start feature allows for a gradual increase in the output voltage during start-up, preventing inrush currents and reducing stress on the power components).
- Can the LM25037MTX/NOPB be used in automotive applications?
Yes, it is qualified for automotive applications and meets the AEC-Q100 standards).
- What is the oscillator frequency range of the LM25037MTX/NOPB?
The oscillator can operate up to 2 MHz and supports synchronization with low-frequency lockout protection).
- What is the reference voltage output of the LM25037MTX/NOPB?
The reference voltage output is 5 V, which can be used to bias external circuits).
