TPS61377 Datasheet | Texas Instruments

Features - Wide input voltage and output voltage range - Input voltage range: 2.9 V to 23 V - Output voltage range: 4.5 V to 25 V - Programmable peak current limit from 1.5 A to 6 A - Switching frequency - TPS61377: 650 k Hz - TPS613771: 1.2 MHz - High efficiency and power capability - 6 A peak switching current limit - Low-side FET: 50 mΩ, High-side FET: 40 mΩ - Up to 95.3% efficiency at VIN = 9 V, VOUT = 16 V, and IOUT = 2.0 A - Up to 96.0% efficiency at VIN = 12 V, VOUT = 24 V, and IOUT = 1.5 A - Extend the system operating time - Typical 70 µA quiescent current - Maximum 1.25 µA shutdown current - Selectable auto PFM and forced PWM mode - Safety and robust operation features - Output overvoltage protection - Cycle-by-cycle overcurrent protection - Thermal shutdown - Precise EN/UVLO threshold - External loop pensation - 2.5-mm × 2.0-mm Hot Rod™ Lite VQFN package 2 Applications - 3.3 VIN, 5 VIN to 12 VOUT, 24 VOUT power conversion - Industrial power systems - Appliances 3 Description The TPS61377 is a high-voltage synchronous boost converter with a 50-mΩ low-side power switch and a 40-mΩ high-side rectifier switch to provide a high efficiency and small size solution. The TPS61377 has a wide input voltage range of 2.9 V to 23 V and the output voltage covers up to 25 V with 6-A switching current capability. The TPS61377 uses an adaptive constant off-time peak current control topology to regulate the output voltage. Under moderate to heavy load condition, the TPS61377 operates in pulse width modulation (PWM) mode. At light load, the device has two operating modes that can be selected via the MODE pin. One is pulse frequency modulation (PFM) mode to improve light-load efficiency, and the other is forced PWM mode to avoid audible noise and other application problems caused by low switching frequency. The TPS61377 implements a soft-start function and a programmable peak switching current limit function. The TPS61377 also provides output overvoltage...