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Texas Instruments TPS56325x Synchronous Buck Converters

Texas Instruments TPS56325x Synchronous Buck Converters are simple, easy-to-use, high efficiency, high power density synchronous buck converters. Each has an input voltage ranging from 3V to 17V and supports up to 3A continuous current at output voltages between 0.6V and 10V. The TPS56325x employs D-CAP3 control mode to provide a fast transient response and support low-ESR output capacitors without external compensation. The device can support up to 95% of duty cycle operations. The integrated bootstrap capacitor helps achieve single-layer PCB and can save total BOM cost.

The TPS563252 operates in Eco-mode, which maintains high efficiency during light loading. The TPS563257 operates in FCCM mode, which keeps the same frequency and lower output ripple during all load conditions. The device integrates complete protection through OVP, OCP, UVLO, OTP, and UVP with hiccup. The Texas Instruments TPS56325x is available in a 1.6mm × 1.6mm SOT-563 package. The junction temperature is specified from –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 solution size
- TPS563252 Eco-mode, TPS563257 FCCM mode at light loading
- D-CAP3™ control mode
- Easy layout with integrated bootstrap capacitor
- Support start-up with pre-biased output
- Open-drain power-good indicator
- 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, and router
Pro-audio, surveillance, and drone
TV, STB and DVR, and smart speaker

Texas Instruments TPS56325x Synchronous Buck Converters

Features

Applications

Functional Block Diagram

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