Texas Instruments TPS543620 Synchronous SWIFT™ Step-Down Converter
Texas Instruments TPS543620 Synchronous SWIFT™ Step-Down Converter is a high-efficiency 18V, 6A synchronous buck converter employing an internally-compensated, fixed-frequency Advanced Current Mode control. It is capable of providing high efficiency while running at a switching frequency up to 2.2MHz. The Texas Instruments TPS543620 is in a small 2.5mm x 3mm HotRod™ VQFN package, which coupled with high efficiency at high frequency, makes it optimal for designs requiring a small solution size. The fixed frequency controller can operate from 500kHz to 2.2MHz and can be synchronized to an external clock using the SYNC pin. Additional features include a high accuracy voltage reference, selectable soft-start times, monotonic start-up into pre-biased outputs, selectable current limits, adjustable UVLO through the EN pin and a full suite of fault protections.
Features
- Fixed-frequency, internally-compensated advanced current mode (ACM) control
- Integrated 25mΩ and 6.5mΩ MOSFETs
- 4V to 18V input voltage range
- 0.5V to 5.5V output voltage range
- Three selectable PWM ramp options to optimize the control loop performance
- Five selectable switching frequencies (500kHz, 750kHz, 1MHz, 1.5MHz, and 2.2MHz)
- Synchronizeable to an external clock
- 0.5V, ±0.5% voltage reference accuracy over the full temperature range
- Selectable soft-start times (0.5ms, 1ms, 2ms, and 4ms)
- Monotonic start-up into pre-biased outputs
- Selectable current limits to support 6A and 3A operation
- Enable with adjustable input undervoltage lockout
- Power good output monitor
- Output overvoltage, output undervoltage, input undervoltage, overcurrent, and overtemperature protection
- –40°C to 150°C operating junction temperature
- 2.5mm × 3mm, 14-pin VQFN-HR package with 0.5mm pitch
Applications
- Wireless infrastructure and wired communications equipment
- Optical and fiber networks
- Test and measurement
- Medical and healthcare
Functional Block Diagram
Related Product
Texas Instruments TPS543820 Synchronous SWIFT™ Step-Down Converter
Buck converter employing an internally-compensated, fixed-frequency Advanced Current Mode control.
Related Development Tool
Texas Instruments TPS543620EVM Converter Evaluation Module (EVM)
Designed to evaluate the TPS543620 a synchronous buck converter, integrating two power MOSFETs.
發佈日期: 2021-01-08
| 更新日期: 2024-08-23