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FP6329

Fiti

Synchronous Buck PWM DC-DC Controller

fitipower integrated technology lnc. Preliminary FP6329/A Synchronous Buck PWM DC-DC Controller Description The FP632...


FP6329

Fiti


Octopart Stock #: O-791313

Findchips Stock #: 791313-F

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Description
fitipower integrated technology lnc. Preliminary FP6329/A Synchronous Buck PWM DC-DC Controller Description The FP6329/A is designed to drive two N-channel MOSFETs in a synchronous rectified buck topology. It provides the output adjustment, internal soft-start, frequency compensation networks, monitoring and protection functions into a single pa
More View ckage. The FP6329/A operating at fixed 300/600kHz frequency provides simple, single feedback loop, voltage mode control with fast transient response. The resulting PWM duty ratio ranges from 0-100%. The FP6329/A features over current protection. The output current is monitored by sensing the voltage drop across the RDS-ON of the low side MOSFET which eliminates the need for a current sensing resistor. This device is available in SOP-8 package. Features ● Operates from +5V or +12V ● High Output Current ● Drives Two Low Cost N-Channel MOSFETs ● Fast Transient Response ● Simple Single-Loop Control Design ( Voltage-Mode PWM Control) ● Internal Soft-Start ● Over-Current Protection ● Over-Voltage Protection ● Under-Voltage Protection ● SOP-8 Package ● RoHS Compliant Applications ● Motherboard ● Graphic Card ● Telecomm Equipments ● High Power DC-DC Regulators ● Switching Power Supply (SPS) Pin Assignment SO Package (SOP-8) Ordering Information FP6329□□□□ TR: Tape / Reel G: Green Package Type SO: SOP-8 SP: SOP-8(Exposed Pad) Switching Frequency Blank: 300kHz A: 600kHz SP Package (SOP-8) Figure 1. Pin Assignment of FP6329/A FP6329/A/B-Preliminary 0.2-2009 1 Free Datasheet http://www.Datasheet4U.com fitipower integrated technology lnc. Preliminary FP6329/A Typical Application Circuit Figure 2. Typical Application Circuit of FP6329/A Functional Pin Description Pin Name BOOT UGATE GND LGATE/OCSET VCC FB COMP/SD PHASE Pin Function This pin provides bias voltage to the high side MOSFET Driver. A bootstrap circuit may be to create a BOOT voltage suitable to drive a standard N-Channel MOSFET. Connect UGATE to the high side MOSFET gate. This pin is monitored by the adaptive shoot-through protection circuitry to determine when the high side MOSFET has turned off. Ground. Connect LGATE to the low side MOSFET gate. This pin is monitored by the adaptive shoot-through protection circuitry to determine when the high side MOSFET has turned off. Connect a resistor (ROCSET) from this pin to GND to determine the over-current threshold of the converter. Power Pin. Feedback Pin. The typical reference voltage is 0.6V. PWM error amplifier output and Shutdown Control pin. It can be used to compensate the voltage control feedback loop of the converter Connect the PHASE pin to the high side MOSFET source. FP6329/A/B-Preliminary 0.2-2009 2 Free Datasheet http://www.Datasheet4U.com fitipower integrated technology lnc. Preliminary FP6329/A Absolute Maximum Rat






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