Texas Instruments TPS65268-Q1 Triple Step-Down Converter
Texas Instruments TPS65268-Q1 Triple Step-Down Converter incorporates triple-synchronous buck converters with 4 to 8V wide input voltage. The converter in constant frequency peak current mode is designed to simplify its application while giving designers options to optimize the system according to targeted applications. The switching frequency of the converters is adjustable from 200kHz to 2.3MHz with an external resistor. An operation that is 180° out-of-phase between BUCK1 and BUCK2 and BUCK3 (BUCK2 and BUCK3 run in-phase) minimizes the input filter requirements. Each buck converter in the TPS65268-Q1 device operates in forced continuous-current mode (FCCM) at light load conditions for reduced output voltage ripple and improved load transient response. The Texas Instruments TPS65268-Q1 device features over-voltage, over-current, short-circuit, and over-temperature protection.
Features
- Qualified for automotive applications
- AEC-Q100 qualified with the following results
- Device temperature Grade 1 (–40°C to +125°C operating junction temperature)
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C4B
- Operating input voltage range 4V to 8V maximum continuous output current 3A, 2A, 2A
- A feedback reference voltage of 0.6V ±1%
- Adjustable clock frequency from 200kHz to 2.3MHz
- Forced Continuous Current Mode (FCCM)
- External clock synchronization
- Dedicated enable and soft-start pins for each buck
- Output voltage Power Good indicator
- Thermal overloading protection
Applications
- Automotive
- Car audio and video
- Home gateway and access point networks
- Surveillance
Application Schematic
Đã phát hành: 2018-03-30
| Đã cập nhật: 2022-11-09