- Evaluation Tools
100V Input, 500mA, Step-Down Converter
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The MP9485 is a high-voltage, step-down, switching regulator that delivers up to 0.5A of current to the load. It integrates a high-side, high-voltage power MOSFET with a current limit of 1.0A, typically. The wide 4.5V to 100V input range accommodates a variety of step-down applications, making it ideal for automotive, industry, and lighting applications. Hysteretic voltage-mode control is employed for very fast response. MPS’s proprietary feedback control scheme minimizes the number of required external components.
The switching frequency can be up to 2MHz, allowing for small component size. Thermal shutdown and short-circuit protection (SCP) provide reliable and fault-tolerant operations. A 170µA quiescent current allows the MP9485 to be used in battery-powered applications.
The MP9485 is available in a SOIC-8 package with an exposed pad.
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Features & Benefits
- Wide 4.5V to 100V Input Range
- Hysteretic Control: No Compensation
- Up to 2MHz Switching Frequency
- PWM Dimming Control Input for LED Application
- Short-Circuit Protection (SCP) with Integrated High-Side MOSFET
- 170μA Quiescent Current
- Thermal Shutdown
- Available in a SOIC-8 Package with an Exposed Pad
The EV9485-N-00A Evaluation Board is designed to demonstrate the performances of MPS’ MP9485 which is a 4.5V-to-100V-input, 500mA-output step-down converter.
The MP9485 employs hysteresis voltage control method to provide fast response to line or load transient. It integrates a high-side high voltage power MOSFET with higher than 0.75A current limit. MPS’s proprietary feedback control scheme minimizes the number of external components.
This board is configured for 5V step-down application. The circuit requires only a minimal number of readily-available, standard, and external components.