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100V, DC-DC Step Down Controller with Selectable Gate Drive and Remote Sense
Overview
- Input Voltage Max:100
- Input Voltage Min:4.5
- Output Voltage Min:0.6
- Current Limit / Short Circuit Protection:Yes
- Internal Compensation:Yes
- PFM, Discontinuous, Hyperlight load, or Skip Mode:Yes
- Package:24 pin QFN and TSSOP
- Power Good Signal:Yes
- Soft Start:Adjustable
- Supported Outputs:1
- Supported Topologies:Buck, COT
- Typical Tolerance (%):1
- Accuracy (+/-) %:1
- Adj Output Voltage (V):0.6V to Dmax*VIN
- DCDC Controller Type:Non-Isolat ed,Buck
The MIC2129 is a constant-frequency synchronous buck controllers featuring a unique adaptive ON-time control architecture. The MIC2129 operates over an input voltage range from 4.5V to 100V and can be used to supply load current up to 25A (Thermally Limited) . The output voltage is adjustable down to 0.6V with an accuracy of ±1%. The device operates with programmable switching frequency from 100kHz to 800kHz. The MIC2129 controller offers three selectable gate drive voltages (5.2V, 7.5V, 10.5V) to enable the use of logic level or standard FETS to ensure optimal efficiency. The high voltage bootstrap diode is also integrated in this controller saving overall solution size and cost. The other key features of the MIC2129 are remote sense, integrated bootstrap LDO's, adjustable soft start, selectable light load operating modes, precision enable, selectable current limit modes (Hiccup, Latch-up, Cycle by cycle), output OVP protection, Power Good and thermal shut down. The MIC2129 is offered in a 24 pin QFN and as well as TSSOP packages.
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Tools And Software
Demo & Evaluation Boards
Library and Firmware
| Tools |
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 The MIC2129 Evaluation Board (EV23R43A) has the following features:
• 4.5V to 100V Wide Input Range;
• Adjustable Output Voltage from 0.6V to DMAX × VIN;
• 100 kHz to 800 kHz Adjustable Switching Frequency;
• Selectable Gate Driver Voltage (5.2V/7.5V/10.5V);
• Output Voltage Remote Sensing;
• Precision Enable;
• Internal Bootstrap Diode;
• Internal Bootstrap LDO;
• Selectable Light Load Operating Mode;
• Adjustable Soft Start Time;
• Adjustable Positive and Negative Current Limit Threshold;
• Selectable Current Limit Mode (Hiccup, Latched, Cycle-by-Cycle);
• Output Overvoltage Protection;
• Internal Compensation;
• ±1% Internal Reference Accuracy from -40°C to +125°C;
• Power Good (PG) Output.
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| The MIC2127A is a constant-frequency, synchronous buck controller featuring a unique adaptive on-time control architecture and HyperLight Load® mode. The MIC2127A operates over an input supply range of 4.5V to 75V. The output voltage is adjustable from 0.6V to 30V with an ensured accuracy of ±1%. The device features programmable switching frequency from 270 kHz to 800 kHz.
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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"]
Design Resources
Reference Designs
Code Examples
Board Design Files
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referencedesigns,Reference Designs:
codeexamples,Code Examples:
ibisboarddesignfiles,Board Design Files: