Overview
The LM5122MHX/NOPB, produced by Texas Instruments, is a highly versatile and efficient DC/DC controller designed for synchronous boost regulator applications. Introduced on February 16, 2013, this component is part of the power controllers category, specifically within the DC to DC controllers segment. It is notable for its wide input voltage range, advanced features, and robust performance, making it suitable for various power management applications.
This controller operates with a peak-current-mode control method, providing inherent line feed forward, cycle-by-cycle current limiting, and ease of loop compensation. It is compliant with EU RoHS standards and is manufactured in Malaysia.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LM5122MHX/NOPB |
| Package Type | 20-Pin HTSSOP |
| Input Voltage Range | 3 V to 65 V (4.5 V for Start-Up) |
| Output Voltage | Up to 100 V |
| Switching Frequency | Programmable up to 1 MHz |
| Integrated Gate Drivers | Robust 3-A N-channel MOSFET gate drivers |
| Thermal Shutdown | Yes |
| Shutdown Quiescent Current | 9 µA |
| Multi-phase Capability | Yes |
Key Features
- Wide Input Voltage Range: 3 V to 65 V, with a start-up voltage of 4.5 V.
- Programmable Switching Frequency: Up to 1 MHz, with free-run and synchronizable switching options.
- Peak-Current-Mode Control: Provides inherent line feed forward and cycle-by-cycle current limiting.
- Integrated Gate Drivers: Robust 3-A N-channel MOSFET gate drivers with adaptive dead-time control.
- Programmable Soft Start: Limits inrush current during startup, prolonging the lifespan of the device and connected components.
- Thermal Shutdown Protection: Ensures device safety under high-temperature conditions.
- Multi-phase Capability: Allows for multi-phase interleaved configurations, enhancing overall system efficiency).
- External Synchronization Capability: Enables synchronization with external clocks for better system integration).
- Low Shutdown Quiescent Current: 9 µA, reducing standby power consumption).
Applications
The LM5122MHX/NOPB is versatile and can be used in a variety of power management applications, including:
- Telecom and Datacom Power Supplies: Ideal for high-efficiency power conversion in telecommunications and data communications systems).
- Industrial Power Systems: Suitable for industrial applications requiring robust and efficient power management).
- Off-line Isolated Flyback and Forward Converters: Can be used in off-line isolated flyback and forward converters, as well as active clamp forward converters).
- Automotive Systems: Although not AEC qualified, it can be considered for automotive applications due to its robust performance and wide input voltage range).
Q & A
- What is the input voltage range of the LM5122MHX/NOPB?
The input voltage range is from 3 V to 65 V, with a start-up voltage of 4.5 V).
- What is the maximum output voltage of the LM5122MHX/NOPB?
The maximum output voltage is up to 100 V).
- What is the switching frequency range of the LM5122MHX/NOPB?
The switching frequency is programmable up to 1 MHz).
- Does the LM5122MHX/NOPB have integrated gate drivers?
Yes, it has robust 3-A N-channel MOSFET gate drivers with adaptive dead-time control).
- What is the shutdown quiescent current of the LM5122MHX/NOPB?
The shutdown quiescent current is 9 µA).
- Is the LM5122MHX/NOPB compliant with EU RoHS standards?
Yes, it is compliant with EU RoHS standards).
- What is the package type of the LM5122MHX/NOPB?
The package type is 20-Pin HTSSOP).
- Does the LM5122MHX/NOPB have thermal shutdown protection?
Yes, it has thermal shutdown protection).
- Can the LM5122MHX/NOPB be used in multi-phase configurations?
Yes, it has multi-phase capability and allows for multi-phase interleaved configurations).
- What are some common applications of the LM5122MHX/NOPB?
Common applications include telecom and datacom power supplies, industrial power systems, and off-line isolated flyback and forward converters).
