APW7047 In-stock Suppliers, APW7047 Price,PDF Datasheet Download - ,The APW7047 provides the power controls and protectionsfor three output voltages on AGP/PCI Graphic Cardapplications. I

Parameters

General Description

The APW7047 provides the power controls and protections for three output voltages on AGP/PCI Graphic Card applications. It integrates two PWM controllers , one SOURCE-SINK linear controller, as well as the monitor and protection functions into a single package. One PWM converter (PWM1) regulates the VCORE(1.5V) for the GPU with a SYNC. buck converter. The other standard buck converter (PWM2) regulates the VMEM(2.5V) for the power of DDR memory. The SOURCE-SINK linear controller control two external MOSFETs to be a linear regulator
with the capability of sourcing and sinking current. It regulates the VTT (1.25V) power for DDR Termination voltage. Additional built-in over-voltage protection (OVP) will be started when the VCORE or VMEM output is above 115% of each DAC setting (VCORE and VMEM). OVP function will shutdown the all output voltages until re-powering on the IC. For each PWM converter, the over-current function monitors the output current by sensing the voltage drop across the MOSFET‘s r_DS(ON) , eliminating the need for a current sensing resistor.

Maximum Ratings

Symbol	Parameter	Rating	Unit
V_cc	Supply Voltage	15	V
V_I, V_O	Input , Output or I/O Voltage	GND -0.3 V to VCC +0.3	V
T_A	Operating Ambient Temperature Range	Range 0 to 70	°C
T_J	Junction Temperature Range	Range 0 to 125	°C
T_STG	Storage Temperature Range	Range -65 to +150	°C
T_S	Soldering Temperature	300 ,10 seconds	°C

Pinout/Connection Diagram

Features

• 3 Regulated Voltages are provided− SYNC. Buck Converter for VCORE(1.15V~1.50V)− Standard Buck Converter for VMEM(2.40V~2.75V)−Linear Controller with SOURCE-SINK Regulation for VTT(1.25V)
• Simple Single-Loop Control Design− Voltage-Mode PWM Control
• Excellent Output Voltage Regulation− VCORE Output : ±2% Over Temperature− VMEM Output : ±2% Over Temperature− VTT Output : 1/2 VIN ±25mV Over Temperature Min. VIN = 1.7V
• Fast Transient Response− Built-in Feedback Compensation− Full 0% to 100% Duty Ratio
• Over-Voltage and Over-Current Fault Monitor
• Constant Frequency Operation(200kHz)
• 24 pins, SOIC Package

APW7047 Selling Leads, APW7047 Datasheet PDF

Parameters

General Description

Maximum Ratings

Pinout/Connection Diagram

Features

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