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TPS40304 3V to 20V Input Synchronous Buck Controller


Texas Instruments' TPS40304 reduces output capacitance requirements for tight regulation point of load converters

Texas Instruments' TPS40304 is a cost-optimized synchronous buck controller that operates from 3V to 20V (input). This controller implements voltage-mode control architecture with input-voltage feed-forward compensation that responds instantly to input voltage change. The switching frequency is fixed at 600KHz. The frequency spread spectrum feature adds dither to the switching frequency, significantly reducing the peak EMI noise and making it much easier to comply with EMI standards. The TPS40304 offers design with a variety of user programmable functions, including soft-start, over-current protection (OCP) levels, and loop compensation. OCP level may be programmed by a single external resistor connected from LDRV pin to circuit ground.    TPS40304 Datasheet

Texas Instruments TPS40304 Synchronous Buck Controller
  • Features & Applications
  • Diagram
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Features
  • Input voltage range from 3V to 20V
  • 600KHz (TPS40304) switching frequencies
  • High- and low-side FET RDS(on) current sensing
  • Programmable thermally compensated OCP levels
  • Programmable soft-start
  • 600mV, 1% reference voltage
  • Voltage feed-forward compensation
  • Supports pre-biased output
  • Frequency spread spectrum
  • Thermal shutdown protection at 145°C
  • 10-pin 3mm × 3mm SON package with ground connection to thermal pad

Applications
  • POL modules
  • Printers
  • Digital TVs
  • Telecom

RoHS Compliant


Simplified Application Diagram

Texas Instruments TPS40304 Diagram


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Texas Instruments
Part Number
Digi-Key
Part Number
Packaging
Voltage -
Input
Power -
Output
Frequency -
Switching
Package/
Case
TPS40304DRCT
Tape & Reel
3V ~ 20V
2.08W
600kHz
10-SON
Cut Tape

Texas Instruments
Part Number
Digi-Key
Part Number
Description
User's Guide
TPS40304EVM-353
Evaluation Module for TPS40304