25µA quiescent current synchronous boost converter

The TPS61379-Q1 is a fully integrated

synchronous boost converter with load disconnect function integrated. The input voltage

covers 2.3 V to 14 V, while the maximal output voltage is up to 18.5 V. The switching

current limit is 2 A typical. It consumes 25-µA quiescent current from VIN.

The TPS61379-Q1 employs the peak current

mode control with the switching frequency programmable from 200 kHz to 2.2 MHz. The device

works in fixed frequency PWM operation in medium to heavy load. There are two optional modes

in light load by configuring the MODE pin: auto PFM mode and forced PWM to balance the

efficiency and noise immunity in light load. The switching frequency can be synchronized to

an external clock. The TPS61379-Q1 uses the spread spectrum of the internal clock to be more

EMI friendly at FPWM mode. In addition, there is an internal soft-start time to limit the

inrush current.

The TPS61379-Q1 has various fixed output

voltage versions to save the external feedback resistor. It supports the external loop

compensation so that the stability and transient response can be optimized at wider

VOUT/VIN ranges. It also integrates robust protection features

including the output short protection, output overvoltage protection, and thermal shutdown

protection. The TPS61379-Q1 is available in a 3-mm × 3-mm 16-pin QFN package with wettable

flank.