Texas Instruments TPS65130

Beschreibung

The TPS6513x is dual-output DC-DC converter generating a positive output voltage up to 15 V and a negative output voltage down to –15 V with output currents in a 200-mA range in typical applications, depending on input voltage to output voltage ratio. With a total efficiency up to 85%, the device is ideal for portable battery-powered equipment. The input voltage range of 2.7 V to 5.5 V allows the TPS65130/1 to be directly powered from a Li-ion battery, from 3 cells NiMH/NiCd or alkaline batteries. The TPS6513x comes in a small 4-mm × 4-mm VQFN-24 package. Together with a minimum switching frequency of 1.25 MHz, the device enables designing small power supply applications because it requires only a few small external components.

The converter operates with a fixed frequency PWM control topology and, if power-save mode is enabled, it uses a pulse-skipping mode at light-load currents. It operates with only 500-µA device quiescent current. Independent enable pins allow power-up and power-down sequencing for both outputs. The device has an internal current limit overvoltage protection and a thermal shutdown for highest reliability under fault conditions.

Eigenschaften

• Dual Adjustable Output Voltages Up to +15 V and Down to –15 V
• 800-mA Typical Switch Current Limit at Boost and Inverter Main Switches at TPS65130
• 2-A Typical Switch Current Limit at Boost and Inverter Main Switches at TPS65131
• Up to 89% Efficiency at Positive Output Voltage Rail
• Up to 81% Efficiency at Negative Output Voltage Rail
• Power-Save Mode for High Efficiency at Low Load Currents
• Independent Enable Inputs for Power Up and Power Down Sequencing
• Control Output for External PFET to Support Completely Disconnecting the Battery
• 2.7-V to 5.5-V Input Voltage Range
• Minimum 1.25-MHz Fixed Frequency PWM Operation
• Thermal Shutdown
• Overvoltage Protection on Both Outputs
• 1-µA Shutdown Current
• Small 4 mm x 4 mm QFN-24 Package (RGE)

Remarks

• L2-4.7uH also used

Typische Anwendungen

• PDAs
• Pocket Pcs
• (TFT) LCD Bias Supply
• Smartphones
• Camcorders
• Digital Cameras
• Small to Medium Size OLED Displays
• CCD Bias Supply

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers