fitipower integrated technology lnc.
FP6321A
Synchronous Buck PWM DC-DC Controller
Description
The FP6321A is designe...
fitipower integrated technology lnc.
FP6321A
Synchronous Buck PWM DC-DC Controller
Description
The FP6321A 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 package. The IC operating at fixed 300kHz frequency provides simple, single feedback loop, voltage mode control with fast transient response. The resulting PWM duty ratio ranges from 0-100%. The FP6321A 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.
Pin Assignment
SO Package (SOP-8)
Features
● Operates from +5V or +12V ● Drives Two Low Cost N-Channel MOSFETs ● Fast Transient Response ● Simple Single-Loop Control Design
( Voltage-Mode PWM Control) ● Internal Soft-Start ● Over-Current Fault Monitor ● Over-Voltage Protection ● Under-Voltage Protection ● SOP-8 Package ● RoHS Compliant
Applications
● Motherboard ● Graphic Card ● Telecomm Equipments ● High Power DC-DC
Regulators ● Servers
Ordering Information
FP6321A□□□
TR: Tape / Reel
P: Green G: Green
Figure 1. Pin Assignment of FP6321A
Package Type SO: SOP-8
FP6321A-1.1-FEB -2010
1
fitipower integrated technology lnc.
Typical Application Circuit
FP6321A
Figure 2. Typical Application Circuit of FP6321A
Fu...