TPS40303 Datasheet | Texas Instruments

Features - 1 Input Voltage Range From 3 V to 20 V - 300-k Hz (TPS40303), 600-k Hz (TPS40304), and 1.2-MHz (TPS40305) Switching Frequencies - High- and Low-Side FET RDS(on) Current Sensing - Programmable Thermally pensated OCP Levels - Programmable Soft Start - 600-m V, 1% Reference Voltage - Voltage Feed-Forward pensation - Supports Prebiased Output - Frequency Spread Spectrum - Thermal Shutdown Protection at 145°C - 10-Pin 3-mm × 3-mm VSON Package With Ground Connection to Thermal Pad - Create a Custom Design Using the TPS4030x With the WEBENCH® Power Designer 2 Applications - POL Modules - Printers - Digital TVs - Tele - USB Type-C Wall Receptacles 3 Description The TPS4030x is a family of cost-optimized synchronous buck controllers that operate from 3-V to 20-V input. The controller implements a voltage-mode control architecture with input-voltage feed-forward pensation that responds instantly to a change in input voltage. The switching frequency is fixed at 300 k Hz, 600 k Hz, or 1.2 MHz. The frequency spread-spectrum (FSS) feature adds to the switching frequency, significantly reducing the peak EMI noise and making it much easier to ply with EMI standards. The TPS4030x offers design with a variety of userprogrammable functions, including soft start, overcurrent protection (OCP) levels, and loop pensation. OCP level may be programmed by a single external resistor connected from the LDRV pin to circuit ground. During initial power on, the TPS4030x enters a calibration cycle, measures the voltage at the LDRV pin, and sets an internal OCP voltage level. During operation, the programmed OCP voltage level is pared to the voltage drop across the low-side FET when it is on to determine whether there is an overcurrent condition. The TPS4030x then enters a shutdown and restart cycle until the fault is removed. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) TPS40304 VSON (10) 3.00 mm × 3.00 mm TPS40305 (1) For all available packages, see the...