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36V, 2MHz, 0.6A Step-Down Converter Industrial-Grade
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The MPQ2451 is a high frequency, step-down, switching regulator with an integrated high-voltage high-side power MOSFET. It efficiently provides up to a 0.6A output with current-mode control for fast loop response.
The wide 3.3V-to-36V input range accommodates a variety of automotive step-down applications, and the 3μA shutdown-mode quiescent current allows use in battery-powered applications.
The MPQ2451 achieves high power-conversion efficiency over a wide load range by scaling down the switching frequency under light-load condition to reduce the switching and gate driving losses.
Frequency fold-back prevents inductor current runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation.
The MPQ2451 is available in a cost-effective SOT23-6L, TSOT23-6L and QFN-6L packages.
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Features & Benefits
- Guaranteed Industrial/Automotive Temp. Range Limits
- 130μA Operating Quiescent Current
- Wide 3.3V-to-36V Operating Input Range
- 500mΩ Internal Power MOSFET
- 2MHz Fixed Switching Frequency
- Internally Compensated
- Stable with Ceramic Output Capacitors
- Internal Soft-Start
- Precision Current Limit Without Current Sensing Resistor
- >90% Efficiency
- Output Adjustable from 0.8V to 0.9∙VIN, Fixed 5V & 3.3V Output
- 6-Lead SOT23, TSOT23 and QFN Packages
- Available in AEC-Q100 Grade 1
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The EVQ2451-G-00A is an evaluation board for the MPQ2451, a fixed 2MHz frequency step-down switching regulator with an integrated internal high-side high voltage power MOSFET. The IC provides 0.6A output with current mode control for fast loop response and easy compensation.
High power conversion efficiency over a wide load range is achieved by scaling down the switching frequency at light load condition to reduce the switching and gate driving losses.
The soft-start function helps prevent inductor current runaway during startup and thermal shutdown provides reliable, fault tolerant operation.
By switching at 2MHz, smaller value inductor and input/output capacitor can be used to lower down cost and save board space.
0.3A, 2MHz, 36V Step-Down Converter Evaluation Board