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28V/12A Synchronous DC-DC Regulator w/Hyper Speed Control™
Overview
- Configuration:
- Max Duty Cycle (%):0.87
- Input Voltage Range Max:26
- Input Voltage Range Min:4.5
- # of Outputs:1
- Output Current:12000
- Driver Type:Step Down (Buck)
- Quiescent Current:1.4
- Synchronous Rectifier:Yes
- Temp Range Max °C (degrees Celsius):125
- Temp Range Min °C (degrees Celsius):-40
- Topology:
- UVLO:
- Vout Max:5.5
- Vfb V (volt):0.8
- VoutMin:0.8
- Vref (V):0
- Hyper Speed Control™ architecture enables
- High delta V operation (VIN = 26V and VOUT = 0.8V)
- Small output capacitance
- 4.5V to 26V input voltage
- Adjustable output from 0.8V to 5.5V (±1% accuracy)
- Any Capacitor™ Stable
- Zero ESR to high-ESR output capacitance
- 12A output current capability
- 300kHz switching frequency
- Internal compensation
- Up to 95% efficiency
- 6ms Internal soft-start
- Foldback current-limit and "hiccup" mode short-circuit protection
- Thermal shutdown
- Supports safe start-up into a pre-biased load
- -40°C to +125°C junction temperature range
The MIC26950 is a constant-frequency, synchronous buck regulator featuring a unique digitally modified adaptive ON-time control architecture. The MIC26950 operates over an input supply range of 4.5V to 26V and provides a regulated output at up to 12A of output current. The output voltage is adjustable down to 0.8V with a typical accuracy of ±1%, and the device operates at a switching frequency of 300kHz.
Hyper Speed Control™ architecture allows for ultra-fast transient response while reducing the output capacitance and also makes (High VIN)/(Low VOUT) operation possible. This digitally modified adaptive tON ripple control architecture combines the advantages of fixed-frequency operation and fast transient response in a single device.
The MIC26950 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include undervoltage lockout to ensure proper operation under power-sag conditions, internal soft-start to reduce inrush current, fold-back current limit, "hiccup" mode short-circuit protection and thermal shutdown.
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Tools And Software
Development Environment
Library and Firmware
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 Online power solutions, accelerated
MPLAB Analog Designer (MAD) allows you to choose an existing solution or customize a suggested design. Schematics and component lists are included. View or modify your choice and, with one click, export the design files to MPLAB Mindi Analog Simulator for verification and analysis.
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["developmentenvironment","Development Environment"] ,
["emulators","Emulator and Debuggers"] ,
["demoevaluationboards","Demo & Evaluation Boards"] ,
["programmerrelations","Programmers"] ,
["thirdpartytools","3rd Party Tools"] ,
["legacy","Legacy"] ,
["softwarelibraries","Library and Firmware"]
referencedesigns,Reference Designs:
codeexamples,Code Examples:
ibisboarddesignfiles,Board Design Files: