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SC32300A/B.EVB Scheda tecnica(PDF) 1 Page - Semtech Corporation |
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SC32300A/B.EVB Scheda tecnica(HTML) 1 Page - Semtech Corporation |
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1 / 18 page  © 2015 Semtech Corporation POWER MANAGEMENT 1 SC32300B Synchronous Power MOSFET Driver With Integrated 3.3V LDO Features Dual N-Channel MOSFET Driver with Programmable Dead Time Control Wide Power Stage Input Voltage: Up to 36V Integrated Low Input Voltage 3.3V LDO Smart Gate Drive to Reduce EMI Integrated Bootstrap Switch Diode Emulation for High Light Load Efficiency Tri-State PWM Input for Drive Stage Shutdown UVLO, Over Temperature Shutdown 10 Lead MLPD-UT 2.3mm x 2.3mm Package Full Industrial Temperature Range Fully WEEE and RoHS Compliant Applications DC Motor Drive (with SC32300A) Synchronous DC-DC Converters Single Phase Multiphase • • Description The SC32300B is a high-side and low-side N-channel MOSFET driver with integrated bootstrap switch. This driver can be used as a synchronous buck converter MOSFET driver. It can also be used together with the SC32300A in applications driving a DC motor or similar load. An external capacitor to program the dead-time offers the flexibility to design the switch clamp circuitry and produce more reliable system operation for the DC motor driving application. The SmartDriveTM function at the turn-on of the high-side MOSFET is a standout feature of this part to reduce the EMI. The diode emulation mode operation offers the opportunity to achieve high effi- ciency at light load. The integrated LDO reduces the cost and the footprint of the system. An Under-Voltage-Lock-Out (UVLO) function is included to ensure the driver outputs are off when the bias voltage falls below 4.02V. An over temperature shutdown feature is also included to prevent the driver from overheating. The SC32300B is available in a space-saving 10 lead 2.3mm x 2.3mm MLPD-UT package and operates over the industrial temperature range. Typical Application Circuit Rev. 2.1 VIN FCCM DT PWM LX VDD DL GND 2 3 4 5 9 8 7 6 VIN Underneath pad R1 R2 3.3V for µP Phase U Phase V S1 S2 S3 S4 SC32300A BST 1 DH 10 SC32300B Phase V VDD pin of SC32300A VLDO FCCM DT PWM LX VDD DL GND 2 3 4 5 9 8 7 6 BST 1 DH 10 R3 R4 Figure 1. Typical Application for DC Motor Driving |
Codice articolo simile - SC32300A/B.EVB |
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Descrizione simile - SC32300A/B.EVB |
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