Texas Instruments TPS55330

Beschreibung

The TPS55330 is a monolithic non-synchronous switching regulator with integrated 5-A, 24-V power switch. It can be configured in several standardswitching-regulator topologies, including boost, SEPIC and isolated flyback. The device has a wide input voltage range to support applications with input voltage from multi-cell batteries or regulated 3.3-V,5-V, and 12V power rails.The TPS55330 regulates the output voltage with current mode PWM (pulse width modulation) control, and has an internal oscillator. The switchingfrequency of PWM is set by either an external resistor or by synchronizing to an external clock signal. The user can program the switching frequency from100 kHz to 1.2 MHz.The device features a programmable soft-start function to limit inrush current during start-up and has other built-in protection features including cycle-by- cycle over current limit and thermal shutdown.The TPS55330 is available in a small 3mm x 3mm 16-pin QFN with PowerPad™ for enhanced thermal performance.

Eigenschaften

• Internal 5-A, 24-V Low-Side MOSFET Switch
• 2.9-V to 16-V Input Voltage Range
• ±0.7% Reference Voltage
• 0.5mA Operating Quiescent Current
• 2.7µA Shutdown Supply Current
• Fixed Frequency Current Mode PWM Control
• Frequency Adjustable from 100kHz to 1.2MHz
• Synchronization Capability to External Clock
• Adjustable Soft-Start Time
• Pulse-Skipping for Higher Efficiency at Light Loads
• Cycle-by-Cycle Current Limit, Thermal Shutdown, and UVLO Protection
• QFN-16 (3mmx3mm) with PowerPad™
• Wide –40°C to 150°C Operating TJ Range

Typische Anwendungen

• Portable PCs
• ADSL Modems
• SEPIC Topology
• Power Docking for Tablets
• 3.3-V, 5-V, 12-V Power Conversion
• Industrial Power Systems
• Thunderbolt Port
• Boost Topology
• Flyback Topology

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers