Texas Instruments TPS55189-Q1 Buck-Boost Converter
Texas Instruments TPS55189-Q1 Buck-Boost Converter is a 27V, 8A converter that integrates four MOSFET switches. This converter can transit among buck mode, boost mode, and buck-boost mode depending on the input voltage and the set output voltage. The TPS55189-Q1 converter operates in boost mode when the input voltage is less than the output voltage and in buck mode when the input voltage is greater than the output voltage. This converter operates in one-cycle buck and one-cycle boost mode alternately when the input voltage is close to the output voltage. The TPS55189-Q1 converter is AEC-Q100 qualified for automotive applications and integrates four MOSFET switches, providing a compact solution for USB Power Delivery (USB PD) applications. The TPS55189-Q1 converter is used in USB PDs, car chargers, automotive infotainment, and advanced driver assistance systems (ADAS).
The TPS55189-Q1 converter features a 200kHz to 2.2MHz switching programmable frequency range by an external resistor and synchronized to an external clock. This converter offers average inductor current limit, over-voltage protections, cycle-by-cycle peak current limit, and output short circuit protection. The TPS55189-Q1 converter is available in a 3mm x 5mm HotRod™ QFN package.
Features
- AEC-Q100 qualified:
- Device temperature grade 1: –40°C to 125°C ambient operating temperature range
- Programmable Power Supply (PPS) support for USB Power Delivery (USB PD):
- 3V to 27V input voltage range
- 0.8V to 22V with 10mV step programmable output voltage range
- ±1% reference voltage accuracy
- ±5% accurate output current monitoring
- Adjustable output voltage compensation for voltage droop over the cable
- Programmable output current limit up to 6.35A with 50mA step
- I2C interface
- Avoid frequency interference and crosstalk:
- Optional clock synchronization
- Programmable switching frequency from 200kHz to 2.2MHz
- High efficiency over the entire load range:
- 96% efficiency at VIN = 12V, VOUT = 20V, and IOUT = 3A
- Programmable PFM and FPWM mode at light load
- EMI mitigation:
- Optional programmable spread spectrum
- Lead-less package
- Rich protection functions:
- Output overvoltage protection
- Thermal shutdown protection
- Hiccup mode for output short-circuit protection
- 8A average inductor current limit
- Available in a 3mm × 5mm HotRod™ QFN package
Applications
- Automotive rear lighting
- Automotive infotainment and cluster
- USB PDs
- Car chargers
- Wireless chargers
- ADAS
Functional Block Diagram
Typical Application Circuit Diagram
Additional Resources
Opublikowano: 2024-07-23
| Zaktualizowano: 2025-05-15