Texas Instruments LM5141-Q1 | Demoboard LM5141QRGEVM

Description

The LM5141-Q1 is a synchronous buck controller,intended for high voltage wide VIN step-downconverter applications. The control method is basedon current mode control. Current mode controlprovides inherent line feed-forward, cycle-by-cyclecurrent limiting, and ease of loop compensation. TheLM5141-Q1 features slew rate control to simplify thecompliance with the CISPR and Automotive EMIrequirements.The LM5141-Q1 has two selectable switchingfrequencies, 2.2 MHz and 440 kHz, and Gate Driverswith Slew Rate Control, for reduced conducted EMI.

Features

The EVM supports the following features and performance capabilities:

• The LM5141-Q1 is Qualified to AEC-Q100 Grade 1 (–40ºC to +125ºC Operating JunctionTemperature)
• VIN 5.5 to 42 V
• Fixed 5-V output, or Adjustable From 1.5–15 V
• Shutdown mode IQ: 10 μA
• Low IQ Standby: 42 μA Typical (Output in Regulation, No Load)
• Fixed 2.2 MHz, or 440 kHz Oscillator Frequency
• Oscillator Can Shift From the Fundamental With a Resistor From the RT Pin to Ground, or an Analog
• Voltage of 0 V to 0.6 V
• The Internal Oscillator can be Synchronized to an External Clock
• Spread Spectrum
• EN Enable Output
• Hiccup Mode for Sustained Overload
• Power Good
• Gate Drive With Slew Rate Control
• Diode Emulation or Forced Pulse-Width Modulation

More information

• Datasheet
• IC product information