APW6020 Advanced Dual PWM and Dual Linear Power Controllers Features General Description • The APW6020 provides the power control and protection for four output voltages in high-performance , graphics intensive microprocessor and computer applications. The IC integrates two voltage-mode PWM controllers and two linear controllers , as well as the monitoring and protection functions into a single package. One PWM controller regulates the microprocessor core voltage with a synchronous-rectified buck converter. The second PWM controller supplies the computer’s AGP 1.5V or 3.3V bus power with a standard Buck converter. The linear controllers requlate the power for the 1.5V GTL bus , and the 1.8V power for the North/South Bridge core voltage and/or cache memory circuits. The APW6020 includes an Intel-compatible , TTL 5-input digital-toanalog converter (DAC) that adjusts the core PWM output voltage from 1.3 VDC to 2.05 VDC in 0.05V steps and from 2.1 VDC to 3.5 VDC in 0.1V increments. The precision reference and voltage-mode control provide ±1% static regulation. The second PWM controller’s output is user-selectable , through a TTL-compatible signal applied at the SELECT pin , for levels of 1.5V or 3.3V with ±3% accuracy. The two linear regulators provide fixed output voltages of 1.5V± 3% (VOUT3 ) and 1.8V±3% (VOUT4 ). The APW6020 monitors all the output voltages. A single Power Good signal is issued when the core is within ±10% of the DAC setting and all other outputs are above their under-voltage levels. Additional builtin over-voltage protection for the core output uses the lower MOSFET to prevent output voltages above 115% of the DAC setting. The PWM controller’s overcurrent function monitors the output current by using the voltage drop across the upper MOSFET’s rDS(ON) . 4 Regulated Voltages are provided − Microprocessor Core (1.3V to 3.5V) − AGP Bus (1.5V or 3.3V) − Memory (1.8V) , GTL Bus (1.5V) • Simple Single-Loop Control Designs Voltage-Mode PWM Control • Fast PWM Converter Transient Response High-Bandwidth Error Amplifiers − Full 0% to 100% Duty Ratios • Excellent Output Voltage Regulation − Core PWM Output : ± 1% Over Temperature − Other Outputs : ± 3% Over Temperature • TTL-Compatible 5- Bit DAC Microprocessor Core Output Voltage Selection • • • − Wide Range - 1.3VDC to 3.5 VDC Power-Good Output Voltage Monitor Over-Voltage and Over-Current Fault Monitors Small Converter Size − Constant Frequency Operation − 200kHz Free-Running Oscillator ; Programmable From 50kHz to Over 800kHz − Small External Component Count Applications • Motherboard Power Regulation for Computers 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.2 - May, 2001 1 www.anpec.com.tw APW6020 Pin Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 UGATE2 PHASE2 VID4 VID3 VID2 VID1 VID0 PGOOD OCSET2 VSEN2 SELECT SS FAULT/ RT VSEN4 VCC UGATE1 PHASE1 LGATE1 PGND OCSET1 VSEN1 FB1 COMP1 VSEN3 DRIVE3 GND VAUX DRIVE4 28 27 26 25 24 23 22 21 20 19 18 17 16 15 Ordering Information APW6020 Package Code K : SOP - 28 Temp. Range C : 0 to 70° C Handling Code TU : Tube Handling Code Temp. Range Package Code TR : Tape & Reel Block Diagram VSEN3 OCSET1 VSEN1 OCSET2 VCC VCC + - DRIVE3 × 0.75 + DRIVE4 LUV + - - Power-on Reset (POR) × 1.10 - + - + LINEAR UNDERVOLTAGE × 0.90 + - 1.26V VSEN4 VAUX 200µA VCC PGOOD 200µA DRIVE2 × 1.15 UGATE2 + + PHASE2 - VCC INHIBIT GATE CONTROL OV INHIBIT FAULT + PWM2 PWM COMP2 DRIVER1 SOFT START & FAULT LOGIC UGATE1 OC1 + - + ERROR AMP1 ERROR AMP2 + + GATE CONTROL + - - PWM COMP1 TTL D/A CONVERTER (DAC) DACOUT 28µA OSCILLATOR × 0.75 VCC PWM1 VCC - SELECT PHASE1 - VSEN2 SYNCH DRIVE LGATE1 PGND GND 1.5V or 3.3V 4.5V FAULT/ RT Copyright ANPEC Electronics Corp. Rev. A.2 - May, 2001 SS FB1 2 COMP1 VID0 VID1 VID2 VID3 VID4 www.anpec.com.tw APW6020 Absolute Maximum Ratings Symbol VCC VI , VO Parameter Supply Voltage Unit V GND -0.3 V to VCC V TA Operating Ambient Temperature Range 0 to 70 °C TJ Junction Temperature Range 0 to 125 °C TSTG Storage Temperature Range -65 to +150 °C 300 ,10 seconds °C TS Input , Output or I/O Voltage Rating 15 Soldering Temperature Thermal Characteristics Symbol R θJA Parameter Thermal Resistance in Free Air SOIC SOIC (with 3in2 of Copper) Value Unit 75 65 °C/W Electrical Characteristics (Recommended operating conditions , Unless otherwise noted) Refer to Block and Simplified Power System Diagrams , and Typical Application Schematic Symbol Parameter Test Conditions APW6020 Min. Typ. Max. Unit 9 mA VCC Supply Current ICC Nominal Supply Current UGATE1, LGATE1, UGATE2, DRIVE3, and DRIVE4 open Power-on Reset Rising VCC Threshold Falling VCC Threshold Rising VAUX Threshold VAUX Threshold Hysteresis Rising VOCSET1 Threshold Oscillator Vocset=4.5V Vocset=4.5V Vocset=4.5V Vocset=4.5V FOCS Free Running Frequency RT= Open RT= Open ∆VOSC Ramp Amplitude DAC and Standard Buck Regulator Reference DAC(VID0-VID4) Input Low Voltage Copyright ANPEC Electronics Corp. Rev. A.2 - May, 2001 3 10.4 V V V V V 215 kHz VP-P 0.8 V 8.2 2.5 0.5 1.26 185 200 1.9 www.anpec.com.tw APW6020 Electrical Characteristics Cont. Symbol Parameter Test Conditions DAC and Standard Buck Regulator Reference DAC(VID0-VID4) Input High Voltage DACOUT Voltage accuracy VREG2 PWM2 Reference Voltage VREG2 PWM2 Reference Voltage PWM2 Reference Voltage Tolerance Linear Regulators (VOUT3 and VOUT4) Regulation (All Linears) VREG3 VSEN3 Regulation Voltage VREG4 VSEN4 Regulation Voltage VSENUV Under-Voltage Level (VSEN/ VREG) Under-Voltage Hysteresis (VSEN/ VREG) Output Drive Current (All Liners) Synchronous PWM Controller Error Amplifier DC Gain GBWP Gain-Bandwidth Product SR Slew Rate Min. Typ. 2.0 -1.0 3 1.5 1.8 75 7 40 % V V % % mA COMP1=10pF 88 15 6 dB MHz V/µs VCC=12V, VUGATE 1,2=6V 1 A VUGATE1,2 =1V VCC=12V, VLGATE 1=1V VLGATE1= 1V 1 20 +1.0 Ω A 3 Ω 120 % mA 230 µA µA 170 VSEN1 Rising 108 110 % VSEN1 Rising 92 94 % IPGOOD= -4mA 115 8.5 200 28 3.5 VSEN1 Rising VFAULT/RT=2.0V VOCSET= 4.5VDC Upper /Lower Threshold 4 Max. 1.5 3.3 3 VSEN Rising VSEN Falling VDRIVE =4.0V RUGATE UGATE1,2 Sink ILGATE LGATE1 Source RLGATE LGATE1 Sink Protection VSEN1 Over-Voltage (VSEN1/DACOUT) IOVP FAULT Souring Current IOCSET OCSET1,2 Current Source ISS Soft Start Current Power Good VSEN1 Upper Threshold (VSEN1/DACOUT) VSEN1 Under Voltage (VSEN1/DACOUT) VSEN1 Hysteresis (VSEN1 DACOUT) VPGOOD PGOOD Voltage Low Unit V % V V % SELECT<0.8V SELECT>2.0V PWM Controllers Gate Drivers IUGATE UGATE1,2 Source Copyright ANPEC Electronics Corp. Rev. A.2 - May, 2001 APW6020 2 % 0.8 V www.anpec.com.tw APW6020 Functional Pin Description UGATE2 (Pin 1) VSEN2 (Pin 10) Connect UGATE2 pin to the standard BUCK PWM converter’s MOSFET gate. This pin provides the gate drive for the MOSFET. Connect this pin to the output of the standard Buck PWM converter. The voltage at this pin is regulated to the level predetermined by the logic-level status of the SELECT pin. This pin is also monitored by the PGOOD comparator circuit. PHASE2 (Pin 2) Connect the PHASE2 pin to the standard BUCK PWM converter’s MOSFET source. This pin is used to monitor the voltage drop across the MOSFET for over-current protection. SELECT (Pin 11) This pin determines the output voltage of the AGP bus switching regulator. A low TTL input sets the output voltage to 1.5V , while a high input sets the output voltage to 3.3V. VID0 , VID1 , VID2 , VID3 , VID4 (Pins 7, 6 , 5 , 4 and 3) SS (Pin 12) VID0-4 are the TTL-compatible input pins to the 5-bit DAC. The logic states of these five pins program the internal voltage reference (DACOUT). The level of DACOUT sets the microprocessor core converter output voltage , as well as the coresponding PGOOD and OVP thresholds. Connect a capacitor from this pin to ground. This capacitor , along with an internal 28µA current source , sets the soft-start interval of the converter. FAULT / RT (Pin 13) PGOOD (Pin 8) PGOOD is an open drain output used to indicate the status of the output voltages. This pin is pulled low when the synchronous regulator output is not within 10% of the DACOUT reference voltage or when any of the other outputs are below their under-voltage thresholds. The PGOOD output is open for ‘11111’ VID code. This pin provides oscillator switching frequency adjustment. By placing a resistor (RT ) from this pin to GND , the nominal 200kHz switching frequency is increased. Conversely , connecting a pull-up resistor (RT ) from this pin to VCC reduces the switching frequency. Nominally , the voltage at this pin is 1.26V. In the event of an over-voltage or over-current condition , this pin is internally pulled to VCC. OCSET2 (Pin 9) VSEN4 (Pin 14) Connect a resistor (ROCSET ) from this pin to the drain of the standard BUCK converter’s MOSFET. ROCSET , an internal 200µA current source (IOCSET ) , and the MOSFET’s on-resistance(rDS(ON)) set the converter over-current (OC) trip point according to the following equation : Connect this pin to the output of the linear 1.8V regulator. This pin is monitored for under-voltage events. I PEAK = DRIVE4 (Pin 15) Connect this pin to the gate of an external MOSFET. This pin provides the drive for the 1.8V regulator’s pass transistor. IOCSET * ROCSET rDS(ON) VAUX (Pin 16) An over-current trip cycles the soft-start function. The +3.3V input voltage at this pin is monitored for Copyright ANPEC Electronics Corp. Rev. A.2 - May, 2001 5 www.anpec.com.tw APW6020 Functional Pin Description Cont. power-on reset (POR) purposes. An over-current trip cycles the soft-start function. The voltage at OCSET1 pin is monitored for power-on reset (POR) purposes. GND (Pin 17) Signal ground for the IC. All voltage levels are measured with respect to this pin. PGND (Pin 24) DRIVE3 (Pin 18) This is the power ground connection. Tie the synchronous PWM converter’s lower MOSFET source to this pin. Connect this pin to the gate of an external MOSFET. This pin provides the drive for the 1.5V regulator’s pass transistor. LGATE1 (Pin 25) VSEN3 (Pin 19) Connect LGATE1 to the synchronous PWM converter’s lower MOSFET gate. This pin provides the gate drive for the lower MOSFET. Connect this pin to the output of the 1.5V linear regulator. This pin is monitored for under-voltage events. PHASE1 (Pin 26) Connect the PHASE1 pin to the synchronous PWM converter’s upper MOSFET source. This pin is used to monitor the voltage drop across the upper MOSFET for over-current protection. COMP1 and FB1 (Pins 20 , and 21) COMP1 and FB1 are the available external pins of the synchronous PWM regulator error amplifier. The FB1 pin is the inverting input of the error amplifier. Similarly , the COMP1 pin is the error amplifier output. These pins are used to compensate the voltage-mode control feedback loop of the synchronous PWM converter. UGATE1 (Pin 27) Connect UGATE1 pin to the synchronous PWM converter’s upper MOSFET gate. This pin provides the gate drive for the upper MOSFET. VSEN1 (Pin 22) VCC (Pin 28) This pin is connected to the synchronous PWM converters’s output voltage. The PGOOD and OVP comparator circuits use this signal to report output voltage status and for over-voltage protection. Provide a 12V bias supply for the IC to this pin. This pin also provides the gate bias charge for all the MOSFETs controlled by the IC. The voltage at this pin is monitored for Power-On Reset (POR) purposes. OCSET1 (Pin 23) Connect a resistor (ROCSET ) from this pin to the drain of the synchronous PWM converter’s upper MOSFET. ROCSET , an internal 200µA current source (IOCSET ) , and the MOSFET’s on-resistance(rDS(ON)) set the converter over-current (OC) trip point according to the following equation : I PEAK = IOCSET * ROCSET rDS(ON) Copyright ANPEC Electronics Corp. Rev. A.2 - May, 2001 6 www.anpec.com.tw APW6020 Table1 Output Voltage Program Pin Name VID4 VID3 VID2 VID1 VID0 Nominal DACOUT Voltage 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70 1.75 1.80 1.85 1.90 1.95 2.00 2.05 Pin Name VID4 VID3 VID2 VID1 VID0 Nominal DACOUT Voltage 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 NOTE : 0 = connected to GND , 1 = open or connected to 5V through pull-up resistors Simplified Power System Diagram +5VIN Q3 VOUT2 Standard Buck PWM Controller Synchronous PWM Controller Q1 VOUT1 Q2 APW6020 +3.3VIN Q4 Linear Controller Linear Controller VOUT4 VOUT3 Copyright ANPEC Electronics Corp. Rev. A.2 - May, 2001 Q5 7 www.anpec.com.tw APW6020 Typical Characteristics +12VIN +5VIN LIN 1µH CIN 3000µF C4 1000pF C1 1µF C3 1000pF VCC ROCSET2 OCSET1 OCSET2 ROCSET1 C2 1µF PGOOD POWERGOOD UGATE2 Q3 LOUT2 UGATE1 6.2µH Q1 LOUT1 4.2µH PHASE2 VOUT2 1.5V or 3.3V PHASE1 COUT2 3000µF CR1 VOUT1 1.3V to 3.5V R4 10.2K Q2 LGATE1 COUT1 8000µF PGND VSEN2 VSEN1 SELECT TYPEDET VAUX FB1 APW6020 +3.3VIN Q4 C5 10pF DRIVE3 R1 1.62K COMP1 C7 0.22µF VSEN3 VOUT3 1.5V COUT3 1000µF DRIVE4 Q5 FAULT/RT VOUT4 1.8V C6 2.7nF R2 150K VID0 VSEN4 R3 499K VID1 VID2 SS COUT4 VID3 1000µF VID4 CSS 0.1µF GND Typical Characteristics 10000 RT ( kΩ ) 1000 to +12V RT pull up 100 RT pull down to GND 10 1 50 150 250 350 450 550 650 750 Switching Frequency ( kHz ) Copyright ANPEC Electronics Corp. Rev. A.2 - May, 2001 8 www.anpec.com.tw APW6020 Typical Characteristics Cont. 1.0% 0.8% 0.8% VOUT2 Reference Voltage deviation (%) 1.0% DACOUT Voltage deviation (%) 0.6% 0.4% 0.2% 0.0% -0.2% -0.4% -0.6% -0.8% -1.0% 0 10 20 30 40 50 60 70 80 90 0.6% 0.4% 0.2% 0.0% -0.2% -0.4% -0.6% -0.8% -1.0% 100 0 Junction Temperature (oC) 20 30 40 50 60 70 80 90 100 90 100 Junction Temperature (oC) 1.0% VOUT4 Reference Voltage deviation (%) 1.0% VOUT3 Reference Voltage deviation (%) 10 0.8% 0.6% 0.4% 0.2% 0.0% -0.2% -0.4% -0.6% -0.8% -1.0% 0 10 20 30 40 50 60 70 80 90 100 0.8% 0.6% 0.4% 0.2% 0.0% -0.2% -0.4% -0.6% -0.8% -1.0% 0 Junction Temperature (oC) Note : The Referance Voltage(VREF ) Deviation is 10 20 30 40 50 60 70 80 Junction Temperature (oC) VREF(TJ ) - VREF(25 oC) x 100% VREF (25oC) TJ : Junction Temperature Copyright ANPEC Electronics Corp. Rev. A.2 - May, 2001 9 www.anpec.com.tw APW6020 Package Information SO – 300mil ( Reference JEDEC Registration MS-013) D N H GAUGE PLANE E 1 2 3 A Millimeters 1 A1 B e L Variations- D Inches Variations- D Dim Min. Max. Variations Min. Max. Dim Min. Max. Variations Min. Max. A 2.35 2.65 SO-16 10.10 10.50 A 0.093 0.1043 SO-16 0.398 0.413 A1 0.10 0.30 SO-18 11.35 11.76 A1 0.004 0.0120 SO-18 0.447 0.463 B 0.33 0.51 SO-20 12.60 13 B 0.013 0.020 SO-20 0.496 0.512 D See variations SO-24 15.20 15.60 D See variations SO-24 0.599 0.614 E 7.40 SO-28 17.70 18.11 E SO-28 0.697 0.713 SO-14 8.80 9.20 e SO-14 0.347 0.362 e 7.60 1.27BSC 0.2914 0.2992 0.050BSC H 10 10.65 H 0.394 0.419 L 0.40 1.27 L 0.016 0.050 N See variations N See variations 0° φ1 φ1 8° Copyright ANPEC Electronics Corp. Rev. A.2 - May, 2001 10 0° 8° www.anpec.com.tw APW6020 Physical Specifications Terminal Material Lead Solderability Packaging Solder-Plated Copper (Solder Material : 90/10 or 63/37 SnPb) Meets EIA Specification RSI86-91, ANSI/J-STD-002 Category 3. 1000 devices per reel Refolw Condition (IR/ Convection or VPR Reflow) temperature Reference JEDEC Standard J-STD-020A APRIL 1999 Peak temperature 183°C Pre-heat temperature Time Classification Reflow Profiles Average ramp-up rate(183°C to Peak) Preheat temperature 125 ± 25°C) Temperature maintained above 183°C Time within 5°C of actual peak temperature Peak temperature range Ramp-down rate Time 25°C to peak temperature Convection or IR/ Convection VPR 3°C/second max. 10 °C /second max. 120 seconds max. 60 ~ 150 seconds 10 ~ 20 seconds 60 seconds 220 +5/-0°C or 235 +5/-0°C 6 °C /second max. 6 minutes max. 215~ 219°C or 235 +5/-0°C 10 °C /second max. Package Reflow Conditions pkg. thickness ≥ 2.5mm and all bags Convection 220 +5/-0 °C VPR 215-219 °C IR/Convection 220 +5/-0 °C pkg. thickness < 2.5mm and pkg. volume ≥ 350 mm³ Copyright ANPEC Electronics Corp. Rev. A.2 - May, 2001 11 pkg. thickness < 2.5mm and pkg. volume < 350mm³ Convection 235 +5/-0 °C VPR 235 +5/-0 °C IR/Convection 235 +5/-0 °C www.anpec.com.tw APW6020 Reliability test program Test item Method Description SOLDERABILITY MIL-STD-883D-2003 245°C , 5 SEC HOLT MIL-STD-883D-1005.7 1000 Hrs Bias @ 125 °C PCT JESD-22-B, A102 168 Hrs, 100 % RH , 121°C TST MIL-STD-883D-1011.9 -65°C ~ 150°C, 200 Cycles ESD MIL-STD-883D-3015.7 VHBM > 2KV, VMM > 200V Latch-Up JESD 78 10ms , Itr > 100mA Tape & Reel Dimensions t D P Po E P1 Bo F W Ko Ao D1 T2 J C A B T1 Application A B C J T1 T2 W P E SOP- 28 330±1 62 ±1.5 12.75 ± 0. 5 2 ± 0.6 24.4 ± 0.2 2± 0.2 24 ± 0.3 12 ± 0.1 1.75± 0.1 Application F D D1 Po P1 Ao Bo Ko t 1.5+ 0.25 4.0 ± 0.1 SOP- 28 11.5 ± 0.1 1.5 +0.1 Copyright ANPEC Electronics Corp. Rev. A.2 - May, 2001 12 2.0 ± 0.1 10.85 ± 0.1 18.34± 0.1 2.97± 0.1 0.35±0.01 www.anpec.com.tw APW6020 Cover Tape Dimensions 24 21.3 Carrier Width Cover Tape Width Customer Service Anpec Electronics Corp. Head Office : 5F, No. 2 Li-Hsin Road, SBIP, Hsin-Chu, Taiwan, R.O.C. Tel : 886-3-5642000 Fax : 886-3-5642050 Taipei Branch : 7F, No. 137, Lane 235, Pac Chiao Rd., Hsin Tien City, Taipei Hsien, Taiwan, R. O. C. Tel : 886-2-89191368 Fax : 886-2-89191369 Copyright ANPEC Electronics Corp. Rev. A.2 - May, 2001 13 www.anpec.com.tw