MP9928 Datasheet (data sheet) PDF





MP9928 Datasheet, Synchronous Step-Down Controller

MP9928   MP9928  

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MP9928 4V-60V Input, Current Mode, Synch ronous Step-Down Controller DESCRIPTIO N The MP9928 is a high-voltage, synchro nous step-down switching regulator cont roller that can directly step down volt ages from up to 60V. The MP9928 uses PW M current control architecture with acc urate cycle-by-cycle current limiting. It is capable of driving dual Nchannel MOSFET switches. AAM Mode (Advanced asy nchronous mode) enables non-synchronous operation and PFM mode to optimize lig ht load efficiency. The operating frequ ency of MP9928 can be programmed by an external resistor or synchronized to an external clock for noisesensitive appl ications. Fault protectio

MP9928 Datasheet, Synchronous Step-Down Controller

MP9928   MP9928  
ns are available including a precision o utput over voltage protection (OVP), ou tput over current protection (OCP), and thermal shutdown. The MP9928 is availa ble in TSSOP20-EP package and QFN-20 (3 mmx4mm) package. TYPICAL APPLICATION V IN 4-60V IN FREQ BST TG VCC1 SW PG SGND MP9928 BG VCC2 SENSE+ EN/SYNC S ENSE- ILIM FB CCM/AAM SYNCO PGND CO MP SS VOUT FEATURES • Wide 4V to 60 V Operating Input Range • Dual N-Chan nel MOSFET Driver • Low Dropout Opera tion: Maximum Duty Cycle at 99.5% • P rogrammable Frequency Range: 100kHz - 1 000kHz • 180º Out-of-Phase SYNCO • External Soft-Start and PG Pin • Sel ectable Cycle-by-Cycle Current Limit Output Over Voltage Protection • In ternal LDO with Externally Power Supply Option • Programmable CCM and AAM Pu lse- Skipping Mode • Accuracy Over Te mperature Protection • TSSOP20-EP pac kage and QFN-20 (3mmx4mm) Package APPLI CATIONS • PD Power Supply in PoE Syst em • USB Dedicated Charging Port (DCP ) • Industrial Control Systems • Po wer Supply for Linear Chargers All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS g reen status, please visit the MPS websi te under quality assurance. “MPS” a nd “The Future of Analog IC Technolog y” are registered trademarks of Monolithic Power Systems, Inc. MP9928 Rev. 1.0 5/20/2016








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