APW3007

APW3007 Advanced Dual PWM and Dual Linear Power Controller Features • Provides 4 Regulated Voltages General Description The APW3007 provides the power control and protection for four output voltage in high-performance microprocessor and computer applications. The APW3007 is designed to provide termination voltage VTT(1.25V) with ±1% accuracy. It integrates two PWM controllers , a linear regulator and a liear controller as well as the monitoring and protection function into a single package. One PWM controller regulates the microprocessor core voltage with a synchronous-rectified buck converter , while the second PWM controller supplies the I/O 3.3V power with a standard buck converter. The linear controller regulates power for GTL bus and the intermal 200mA regulator for clock driver circuits. The APW3007 can provide in excess of 14A of output current for an on-board DC/DC converter via internal reference voltage. It can monitor all the output voltage , and a single Power Good signal is issued when the core is within 10% of the internal reference voltage and the other levels are above their undervoltage levels. Additional built-in over-voltage protection for the core output uses the lower MOSFET to prevent output voltage above 115% of the reference voltage. The PWM controller’s over-current function monitor the output current by sensing the voltage drop across the upper MOSFET’s RDS(ON) , eliminating the need for a current sensing resistor. − Microprocessor Core , I/O , Clock Chip and GTL Bus • • Simple Single-Loop Control Design − Voltage-Mode PWM Control Fast Transient Response − High-Bandwidth Error Amplifier − Full 0% to 100% Duty Ratio • Excellent Output Voltage Regulation − Core PWM Output : ±1% Over Temperature − I/O PWM Output : ±2% Over Temperature − Other Output : ±2.5% Over Temperature • • Power-Good Output Voltage Monitor Microprocessor Core Voltage Protection Against Shorted MOSFET • Over-Voltage and Over-Current Fault Monitors • Small Converter Size − Constant Frequency Operation − 200kHz Free-Running Oscillator ; Programmagle from 50kHz to 800kHz Applications • • • • Motherboard Power Regulation for Computers Low-Voltage Distributed Power Supplies VGA Card Power Regulation Termination Voltage ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Copyright  ANPEC Electronics Corp. Rev. A.5 - Jun., 2003 1 www.anpec.com.tw APW3007 Pin Description UGATE2 PHASE2 NC NC NC NC NC PGOO D OCSET2 FB2 V5 SS FAULT NC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 V12 UGATE1 PHASE1 LG ATE1 PGND OCSET1 VSEN1 FB1 NC FB3 GATE3 GND NC VSEN2 UGATE2 PHASE2 NC NC NC NC NC PGOO D OCSET2 FB2 V5 SS FAULT FB4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 V12 UGATE1 PHASE1 LG ATE1 PGND OCSET1 VSEN1 FB1 NC FB3 GATE3 GND Vout4 VSEN2 APW3007-12 APW3007-13 Ordering and Marking Information A PW 3007 H a n d lin g C o d e Tem p. R ange Package Code V o lta g e C o d e V o lta g e C o d e 1 2 : 1 .2 5 V Package Code K : SO P - 28 Tem p. R ange C : 0 to 7 0 C H a n d lin g C o d e TU : T ube 1 3 : 1 .3 0 V T R : Tape & R eel AP W 3007 K : AP W 3007 XXXXX X X X X X - D a te C o d e Absolute Maximum Ratings Symbol V12 VI , VO TA TJ TSTG TS Parameter Supply Voltage Input , Output or I/O Voltage Operating Ambient Temperature Range Junction Temperature Range Storage Temperature Range Soldering Temperature Rating 15 GND -0.3 V to V12 +0.3 0 to 70 0 to 125 -65 to +150 300 ,10 seconds Unit V V °C °C °C °C Copyright  ANPEC Electronics Corp. Rev. A.5 - Jun., 2003 2 www.anpec.com.tw APW3007 Block Diagram VSEN1 FB4 OCSET1 V12 V5 V O UT 4 0.3V FB3 GATE3 1.26V 0.3V LU V 110% PO W ER-O N RE SET PGOOD 90% OCSET2 200uA VC C THER M AL PR OTE CTION DRIVE 2 O C2 VC C G ATE CO NTRO L INHIB IT FAULT SO FT-START AN D FAULT LO G IC 0V O C1 INHIB IT G ATE CO NTRO L ER RO R AM P1 PW M 1 VC C DR IV E1 115% 200uA UGATE2 PHASE2 UGATE1 PHASE1 PW M 2 FB2 2.0V ER RO R AM P2 VSEN2 LGATE1 LO W ER DR IV E 3.3K V REF OS CILLATO R PGND 2.5V 4.3V 4.6V GND FAULT SS FB1 Thermal Characteristics Symbol R θJA Parameter Thermal Resistance in Free Air SOIC SOIC (with 3in2 of Copper) Value 75 65 Unit °C/W Copyright  ANPEC Electronics Corp. Rev. A.5 - Jun., 2003 3 www.anpec.com.tw APW3007 Electrical Characteristics (Recommended operating conditions , Unless otherwise noted) Refer to Block and Simplified Power System Diagrams , and Typical Application Schematic. APW3007 Min Typ 9.5 0.5 Supply ramping up 4.3 0.3 V12 V5 RT= Open RT= Open 185 6 2 200 1.9 215 Max Symbol Supply UVLO Section Parameter Test Conditions Unit UVLO Threshold-12V UVLO Hysterises-12V UVLO Threshold-5V UVLO Hysterises-5V Supply Current I12 I5 Oscillator FOCS ∆VOSC Free Running Frequency Ramp Amplitude Nominal Supply Current Supply ramping up V V V V mA kHz VP-P Switching Controller Reference Voltage VREF Reference Voltage APW3007-12 APW3007-13 Reference Voltage accuracy VFB2 Output Voltage VFB2 Voltage Accuracy 2.5V Regulator (Vout4) Vo4 Reference Voltage Dropout Voltage Load Regulation Line Regulation Input bias Current Output Current Current Limit Thermal Shutdown 1.5V Regulator (Vout3) Vo3 Reference Voltage Reference Voltage Accaracy Input bias current Output Drive Current TA=25 , GATE=FB3 TA=25 , Vout4=FB4 Io=200mA 1mA