Overview
The LM25122QPWPRQ1 is a wide-input synchronous boost controller produced by Texas Instruments. It is designed for high-efficiency synchronous boost regulator applications and is AEC-Q100 qualified, making it suitable for automotive and other high-reliability environments. The controller operates over a wide input voltage range of 3-42 V and can output up to 50 V. It features peak current mode control, robust integrated gate drivers, and adaptive dead-time control, among other advanced functionalities.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 3 V to 42 V (4.5 V for startup) |
| Output Voltage Range | Up to 50 V |
| Switching Frequency | Programmable up to 600 kHz |
| Integrated Gate Drivers | Robust 3 A N-channel MOSFET gate drivers |
| Control Method | Peak Current Mode Control |
| Temperature Range | -40°C to +125°C |
| ESD Classification | HBM Level 2, CDM Level C6 |
| Package Type | HTSSOP (PWP) with 20 pins |
| Thermal Shutdown Protection | Yes |
| Shutdown Quiescent Current | 9 µA |
Key Features
- Multiphase capability with 180º phase shifted clock output for easy multi-phase interleaved configuration
- Optional diode emulation mode for discontinuous mode operation at light load conditions
- Programmable cycle-by-cycle current limit and hiccup mode overload protection
- Programmable line undervoltage lockout (UVLO) and soft-start
- Internal charge pump for 100% duty cycle in bypass operation
- Adaptive dead-time control and robust integrated gate drivers
- Inductor DCR current sensing capability
- Programmable slope compensation and skip cycle mode to reduce standby power
- Allows external VCC supply
Applications
The LM25122QPWPRQ1 is particularly suited for high-efficiency synchronous boost regulator applications in automotive and industrial systems. It is ideal for use in:
- Automotive audio amplifiers and infotainment systems
- Off-battery dual-phase boost converters
- Automotive tracking power supplies
- High-reliability DC/DC converters requiring wide input voltage ranges
Q & A
- What is the input voltage range of the LM25122QPWPRQ1? The input voltage range is 3 V to 42 V, with a minimum startup voltage of 4.5 V.
- What is the maximum output voltage of the LM25122QPWPRQ1? The maximum output voltage is up to 50 V.
- What is the switching frequency range of the LM25122QPWPRQ1? The switching frequency is programmable up to 600 kHz.
- Does the LM25122QPWPRQ1 support multiphase operation? Yes, it supports multiphase operation with a 180º phase shifted clock output.
- What is the temperature range of the LM25122QPWPRQ1? The temperature range is -40°C to +125°C.
- What type of control method does the LM25122QPWPRQ1 use? It uses peak current mode control.
- Does the LM25122QPWPRQ1 have thermal shutdown protection? Yes, it has thermal shutdown protection.
- What is the shutdown quiescent current of the LM25122QPWPRQ1? The shutdown quiescent current is 9 µA.
- Can the LM25122QPWPRQ1 operate in discontinuous mode? Yes, it can operate in discontinuous mode using the diode emulation feature.
- Is the LM25122QPWPRQ1 AEC-Q100 qualified? Yes, it is AEC-Q100 qualified.
