Texas Instruments LP8762x-Q1 Four-Phase 12A Buck Converter
Texas Instruments LP8762x-Q1 Four-Phase 12A Buck Converter is designed to meet current processors' and platforms' power management requirements in various safety-relevant automotive and industrial applications. The device has four step-down DC-DC converter cores that can be configured for five different phase configurations, from one 4-phase output to four 1-phase outputs. An I2C-compatible serial interface or an SPI serial interface can change the device settings.
The automatic PFM/PWM (AUTO mode) operation and the automatic phase adding and shedding maximize efficiency over a wide output current range. The Texas Instruments LP8762x-Q1 device supports remote differential voltage sensing for multiphase outputs to compensate for the IR drop between the point-of-load (POL) and the regulator output, improving the accuracy of the output voltage. The phases are interleaved and the switching clock can be forced to PWM mode. The switching can be synchronized to an external clock, and spread-spectrum mode can be enabled to minimize disturbances.
Features
- AEC-Q100 qualified with the following results
- 2.8V to 5.5V input voltage
- Device temperature grade 1 (–40°C to +125°C ambient operating temperature range)
- Device HBM ESD classification Level 2
- Device CDM ESD classification Level C4B
- Functional safety-compliant
- Developed for functional safety applications
- Documentation available to aid ISO 26262 system design up to ASIL-D
- Documentation available to aid IEC 61508 system design up to SIL-3
- Systematic capability up to ASIL-D
- Hardware integrity up to ASIL-D
- Windowed voltage and over-current monitors
- Watchdog with selectable trigger/Q&A mode
- Level or PWM error signal monitoring (ESM)
- Thermal monitoring with a high-temperature warning and thermal shutdown
- Bit-integrity (CRC) error detection on configuration registers and non-volatile memory
- Four high-efficiency step-down DC-DC converters
- Output voltage of 0.3V to 3.34V (0.3V to 1.9V for multi-phase outputs)
- A maximum output current of 3A per phase, up to 12A with a 4-phase configuration
- Programmable output voltage slew rate of 0.5mV/μs to 33mV/μs
- 2.2MHz or 4.4MHz switching frequencies
- Ten configurable general-purpose I/O (GPIO)
- SPMI interface for multi-PMIC synchronization
- Input overvoltage monitor (OVP) and undervoltage lockout (UVLO)
Applications
- Advanced driver assistance systems (ADAS)
- Front camera
- Surround-view system ECU
- Long range radar
- Sensor fusion
- Domain controller
Functional Block Diagram
Additional Resources
Related Development Tool
Texas Instruments LP8764x-Q1EVM Evaluation Modules
Used to test, demo, debug and configure one or more LP8764-Q1 power management ICs.
Publicado: 2024-09-25
| Actualizado: 2025-05-12