TPS65270RGER

Product Summary

The TPS65270RGER is a monolithic dual synchronous buck regulator with wide operating input voltage that can operate in 5-, 9-, 12- or 15-V bus voltages and battery chemistries. The converters are designed to simplify its application while giving the designer the option to optimize their usage according to the target application. The TPS65270RGER features a precision 0.8-V reference and can produce output voltages up to 15 V. Each converter features enable pin that allows dedicated control each channel that provide flexibility for power sequencing. Softstart time in each channel can be adjustable by choosing different external capacitors. Applications are (1)DTV; (2)DSL modems; (3)Cable modems; (4)Set top boxes; (5)Car DVD players; (6)Home gateway and access point networks; (7)Wireless routers.

Parametrics

TPS65270RGER absolute maximum ratings: (1)Voltage range at VIN1, VIN2, LX1, LX2: –0.3 to 18 V; (2)Voltage range at LX1, LX2 (maximum withstand voltage transient < 10 ns): –1 to 18 V; (3)Voltage at BST1, BST2, referenced to LX1, LX2 pin: –0.3 to 7 V; (4)Voltage at VCC, EN1, EN2, COMP1, COMP2, LOW_P: –0.3 to 7 V; (5)Voltage at SS1, SS2, FB1, FB2, ROSC: –0.3 to 3.6 V; (6)Voltage at AGND, GND: –0.3 to 0.3 V; (7)Operating virtual junction temperature range: –40 to 125 °C; (8)Storage temperature range: –55 to 150 °C.

Features

TPS65270RGER features: (1)Wide input supply voltage range (4.5 V - 18 V); (2)0.8 V, ±1% accuracy reference; (3)Up to 2-A (Buck 1)and 3-A (Buck 2)maximum continuous output loading current; (4)Low power pulse skipping mode to achieve high light load efficiency; (5)Adjustable switching frequency 300 kHz - 1.4 MHz set by external resistor; (6)Dedicated enable and soft-start for each buck; (7)Peak current-mode control with simple compensation circuit; (8)Cycle-by-cycle over current protection; (9)180° out-of-phase operation to reduce input capacitance and power supply induced noise; (10)Available in 24-lead thermally enhanced HTSSOP (PWP)and QFN 4-mm x 4-mm (RGE)packages.

Diagrams