LM5017EVAL: 10V @ 600mA, 12.5 ~ 100V in, Buck

The LM5017 evaluation board provides the design engineer with a fully functional buck regulator, employing the constant on-time (COT) operating principle. This evaluation board provides a 10 V output over an input range of 12.5 V to 100 V.

The board’s specifications are:
• Input Range: 12.5 V to 95 V, transients up to 100 V (absolute maximum)
• Output Voltage: 10 V
• Output Current: 600 mA
• Nominal Switching Frequency ~ 200 kHz
• Measured Efficiency: 92.4% at 400 mA and VIN = 24 V
• Board size: 2.95 in. x 1.8 in.

The LM5017 is a 100-V, 600-mA synchronous step-down regulator with integrated high side and low side MOSFETs. The constant on-time (COT) control scheme employed in the LM5017 requires no loop compensation, provides excellent transient response, and enables very high step-down ratios. The on-time varies inversely with the input voltage resulting in nearly constant frequency over the input voltage range. A high voltage startup regulator provides bias power for internal operation of the IC and for integrated gate drivers.