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The LM5085 evaluation board provides the design engineer with a fully functional buck regulator, employing the LM5085 PFET switching controller which uses the constant on-time (COT) operating principle. The evaluation board provides a 5V output over an input range of 5.5V to 55V. The circuit (...)
- Input Voltage: 5.5V to 55V, 60V maximum
- Output Voltage: 5V
- Maximum load current: 4.5A for VIN >8V
- Minimum load current: 0A
- Current Limit Threshold: â
- Measured Efficiency: 97.2% (VIN 5.5V, IOUT = 0.6Amps)
- Nominal Switching Frequency: 300 kHz
- Size: 3.1 in. x 1.5 in. x 0.78 in
Design tools & simulation
SNVM213B.ZIP (147 KB) - PSpice Model
SNVM496A.TSC (135 KB) - TINA-TI Reference Design
SNVM497A.TSC (136 KB) - TINA-TI Reference Design
SNVM498A.ZIP (20 KB) - TINA-TI Spice Model
SNVM955.ZIP (3 KB) - PSpice Model
15V – 50V input to 12V@5A, Non Sync Buck
— It is a non synchronous buck controller. It uses a constant on time (COT) device i.e. LM5085.
This circuit has ceramic output capacitors which have very low ESR. Therefore the ripple is generated using the DCR of the inductor. The ripple voltage is then superimposed onto the feedback voltage.
Non-Isolated Buck Converter (13.5V@15A)
— This is a non-synchronous buck converter design that has an input voltage range of 18V-to-32Vin max and provides a regulated output of 13.5Vout@15A.