Texas Instruments TPS61391 Boost Converters

Texas Instruments TPS61391 Boost Converters are 700kHz Pulse-Width Modulating (PWM) step-up converters with an 85V switch FET. The 85V switch FET converts a low input voltage to a higher voltage for biasing the APD. These boost converters support input voltage range from 2.5V to 5.5V and switching peak current of up to 1000mA. The TPS61391 boost converters include an accurate current mirror with 1:5 or 4:5 selectable gain options. These converters offer integrated high-power optical protection with the APD power path having an additional FET in series with 0.5µs typical response time. The Texas Instruments TPS61391 boost converters are available in a 3mm x 3mm QFN package with an exposed pad underneath. Typical applications include APD bias, optical line terminal, and high-voltage sensor supply.