Texas Instruments TPS56x24x Synchronous Step-Down Converter
Texas Instruments TPS56x24x Synchronous Step-Down Converter is a simple, easy-to-use, high-efficiency, high-power-density, synchronous buck converter with an input voltage range of 3V to 17V and supporting up to 2A (TPS562242B) or 3A (TPS563242, TPS563247) of continuous output current at output voltages between 0.6V and 10V.
The Texas Instruments TPS56x24x employs D-CAP3 control mode to support low-ESR output capacitors and provide a fast transient response without requiring external compensation. The device can support up to 95% duty cycle operation.
The TPS562242B and TPS563242 operate in Eco-mode, which maintains high efficiency during light loading. The TPS563247 operates in FCCM mode, which maintains low output ripple and the same frequency across all load conditions. The devices integrate complete protection through OVP, OCP, UVLO, OTP, and UVP with hiccup. The device is available in a 1.6mm × 1.6mm SOT-563 package with a junction temperature of –40°C to +125°C.
Features
- Configured for a wide range of applications
- 3V to 17V input voltage range
- 0.6V to 10V output voltage range
- 0.6V reference voltage
- ±1% reference accuracy at +25°C
- ±1.5% reference accuracy at –40°C to +125°C
- Integrated 55.0mΩ and 24.3mΩ MOSFETs
- 100µA low quiescent current
- 1.2MHz switching frequency
- Maximum 95% large duty cycle operation
- Precision EN threshold voltage
- 1.6ms fixed typical soft-start time
- Ease of use and small design size
- TPS562242B, TPS563242 Eco-mode, TPS563247 FCCM mode at light loading
- D-CAP3™ control mode
- Easy layout with integrated bootstrap capacitor
- Supports start-up with prebiased output
- Non-latch for OV, OT, and UVLO protection
- Hiccup mode for UV protection
- Cycle-by-cycle OC and NOC protection
- 1.6mm × 1.6mm SOT-563 package
Applications
- WLAN/Wi-Fi® access point, switch, router
- Appliances, video recorder
- Pro-audio, surveillance, drone
- TV, STB, and DVR, smart speaker
Functional Block Diagram
