TPS5120DBTG4

TEXAS INSTRUMENTS  TPS5120DBTG4  直流/直流控制器, 2相, 4.5V至28V, 2路输出, 同步降压, 500kHz, TSSOP-30

description

The TPS5120 is a dual channel, high-efficiency synchronous buck controller where the outputs run 180 degrees out of phase, which lowers the input current ripple, thereby reducing the input capacitance cost. The PWM/SKIP pin allows the operating mode to switch from PWM mode to skip mode under light load conditions. The skip mode enables a lower operating frequency and shortens the pulse width to the low-side MOSFET, increasing the efficiency under light load conditions.

Independent Dual-Outputs Operate 180° Out of Phase

Wide Input Voltage Range: 4.5-V –28-V

Adjustable Output Voltage Down to 0.9 V

Pin-Selectable PWM/SKIP Mode for High

Efficiency Under Light Loads

Synchronous Buck Operation Allows up to 95% Efficiency

Separate Standby Control and Overcurrent Protection for Each Channel

Programmable Short-Circuit Protection

Low Supply 1 mA and Shutdown 1 nA Current

Power Good Output

High-Speed Error Amplifiers

Sequencing Easily Achieved by Selecting

Softstart Capacitor Values.

5-V Linear Regulator Power Internal IC Circuitry

30-Pin TSSOP Packaging