APW7016 Advanced PWM Power Controller Features General Description • Simple Single-Loop Control Design • Excell Output Voltage Regulation • Fast Transient Response The APW7016 provides a complete control and protection for a DC-DC converter optimized for high performance microprocessor applications. It is designed to drive two N-Channel MOSFETs in a synchronousrectified buck topology. The APW7016 integrates output voltage control , monitoring and protection functions into a single Package. The APW7016 includes a 3-bit digital-to-analog converter (DAC) that provides a easily adjustable and precisely output voltage from 1.3VDC to 1.65VDC in 0.05V steps. Any selected output voltage can be maintained within ±1% accuracy over temperature and line voltage variations. With a 200kHz free-running triangle-wave oscillator and a error amplifier featuring a 15MHz unity-gain bandwidth and 6V/us slew rate inside the chip , APW7016 can implement a simple , single feedback loop , voltage-mode control topology with high transient performance. The APW7016 also features with multiple protections against over-current and over-voltage conditions by inhibiting PWM operation. The APW7016 uses the RDS(ON) of the upper MOSFET as the current sensing element which eliminates the demend for an extra component. The APW7016 also monitors the output voltage using a comparator with hysteresis that tracks the DAC output. • • • − Voltage-Mode PWM Control − PWM Output : ±1% Over Temperautre − High-Bandwidth Error Amplifier −Full 0% to 100% Duty Ratio 3-Bit Digital-to-Analog Output Voltage Selection Over-Voltage and Over-Current Fault Monitors Small Converter Size −200kHz Free-Running Oscillator − Programmable from 50KHz to 800KHz Applications • High-Power 5V to 3.xV (or below) DC-DC Regulators • • Low-Voltage Distributed Power Supplies VGA Card Power Regulation Pin Description VSEN 1 16 OCSET 2 15 VCC SS 3 14 LGATE VID0 4 13 PGND VID1 5 12 BOOT RT VID2 6 11 UGATE COMP 7 10 PHASE FB 8 9 GND 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 - Oct., 2002 1 www.anpec.com.tw APW7016 Ordering and Marking Information APW 7016 P ackage C ode K : S O P - 16 Tem p. R ange C : 0 to 7 0 ° C H a n d lin g C o d e TU : Tube H a n d lin g C o d e Tem p. R ange P ackage C ode APM 7017 XXXXX A P M 7 0 1 6 K /N : N : SSO P - 16 TR : Tape & R eel X X X X X - D a te C o d e Block Diagram VCC Power on Reset + VSEN - OVP DETN (Power on Reset) 115% OCSET SS OC VID0 VID1 TTL D/A CONVERER (DAC) UGATE SOFT START DETN (Power on Reset) PHASE DAC OUT ERRAMP + + - VID2 CP4 + - CP1 OC 200µA BOOT + - UGATE FB COMP DETN, OC PHASE DRIVER OSC LGATE DETN (Power on Reset) PGND GND RT Absolute Maximum Ratings Symbol VCC VBOOT –VPHASE VI , VO TA TJ TSTG TS Parameter Supply Voltage Boot Voltage Input , Output or I/O Voltage Operating Ambient Temperature Range Junction Temperature Range Storage Temperature Range Soldering Temperature Copyright ANPEC Electronics Corp. Rev. A.1 - Oct., 2002 2 Rating 15 15 GND - 0.3 V to VCC + 0.3 0 to 70 0 to 150 -65 to +150 300,10 seconds Unit V V V °C °C °C °C www.anpec.com.tw APW7016 Thermal Characteristics Symbol R θJA Parameter Value Unit 110 °C/W Thermal Resistance in Free Air SOP , SSOP 2 SOP (with 3in of Copper) 86 Electrical Characteristics Recommended operating conditions , unless otherwise noted Symbol Parameter VCC Supply Current ICC Nominal Supply Power-on Reset Rising VCC Threshold Falling VCC Threshold Oscillator Free Running Frequency ∆VOSC Ramp Amplitude Reference and DAC DAC(VID0-VID2) Input Low Voltage DAC(VID0-VID2) Input High Voltage DACOUT Voltage accuracy Error Amplifier DC Gain GBW Gain-Bandwidth Product SR Slew Rate PWM Controller Gate Driver Test Conditions Min. UGATE and LGATE open Vocset=4.5V Vocset=4.5V RT= Open RT= Open APW7016 Typ. Max. 3 mA 10.7 V V 215 kHz VP-P 0.8 V V % 8.2 185 200 2 3.0 -1.0 COMP=20pF RUGATE UGATE Source VCC=12V , VUGATE =6V RUGATE UGATE Sink VUGATE-PHASE =1V RLGATE LGATE Source VCC=12V , VLGATE =1V RLGATE LGATE Sink VLGATE =1V 350 +1.0 88 15 6 dB MHz V/µs 500 mA 10 Ω mA 3.5 6.5 Ω 115 120 % 200 230 µA 5.5 350 Unit 450 Protection Over-Voltage Trip (VSEN /DACOUT) IOCSET ISS OCSET Current Source VOCSET=4.5VDC Soft Start Current Copyright ANPEC Electronics Corp. Rev. A.1 - Oct., 2002 170 10 3 µA www.anpec.com.tw APW7016 Pin Function Description VSEN (pin 1) PHASE (pin 10) Connect this pin to the converter’s voltage output. The OVP comparator circuits monitor output voltage status and act over voltage protection by using this signal. Connect the PHASE pin to the source of the upper MOSFET. This pin is used to monitor the voltage drop across the upper MOSFET for over-current protection. OCSET(pin 2) UGATE (pin 11) Connect a resistor(ROCSET) from this pin to the drain of the upper MOSFET. An internal 200µA current source (IOCS), ROCSET, and the upper MOSFET’s onresistance (RDS(ON)) set the converter over-current (OC) trip point according to the following equation : Connect UGATE to the upper MOSFET gate. This pin enables the gate drive signal to drive the upper MOSFET . BOOT (pin 12) IPEAK= IOCSET * ROCSET BOOT pin provides bias voltage to the upper MOSFET gate driver. A bootstrap circuit could be used to pump a BOOT voltage for enforcing the driving capability of the gate driver and improving the performance of the upper MOSFET. rDS(ON) An over-current trip resets the soft-start function. SS (Pin 3) PGND(pin 13) Connect a capacitor from this pin to ground. This capacitor, along with an internal 10µA current source, sets the soft-start interval of the converter. PGND pin provides the power ground connection. Connect this pin to the source of the lower MOSFET. VID0-2 (Pins 4-6) LGATE (pin 14) VID0-2 are the input pins to the 3-bit DAC. The states of these three pins decide the internal voltage reference (DACOUT). The level of DACOUT sets the converter output voltage and also sets the OVP thresholds. Table 1 specifies DACOUT for the 8 combinations of DAC inputs. Connect LGATE to the lower MOSFET gate. This pin enables the gate drive signal to drive the lower MOSFET. VCC (pin 15) Connect VCC to 12V voltage supply. This pin supplies the bias for the chip. COMP (pin 7) and FB (pin 8) COMP and FB are the accessiable pins of the error amplifier. FB pin is the inverting input of the error amplifier and COMP pin is output of the error amplifier. These pins provide the compensation for the voltage-control feedback loop of the converter. RT (pin 16) RT pin provides oscillator switching frequency adujstment. By connecting 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. GND (Pin 9) GND is signal ground of the IC. All voltage levels are measured with respect to this pin. Copyright ANPEC Electronics Corp. Rev. A.1 - Oct., 2002 4 www.anpec.com.tw APW7016 Table 1 Output Voltage Program Pin Name VID2 VID1 VID0 Nominal Output Voltage Dacout 1 1 1 1.3 1 1 1 0 0 1 1.35 1.4 1 0 0 1.45 0 0 1 1 1 0 1.5 1.55 0 0 1 1.6 0 0 0 1.65 Typical Performance Curve RT(KΩ) vs. Switching frequency 10000 RT(KΩ) 1000 100 RT Pull up to 12V 10 RT Pull down to GND 1 0 100 200 300 400 500 600 700 800 900 Switching frequency Copyright ANPEC Electronics Corp. Rev. A.1 - Oct., 2002 5 www.anpec.com.tw APW7016 Application Schematic C6 220PF 12V C5 0.1uF R1 10R L1 1uH 5V R4 1.2KJ Q1 1 VSEN 2 OCSET 3 SS 4 VID0 5 VID1 C7 0.1uF 6 VID2 7 COMP C9 2700PF R5 150KJ 8 FB C8 10PF R2 5.1R RT 16 VCC 15 C2 330uF Q2A APM7313 C1 10uF L2 4.7uH LGATE 14 PGND 13 R3 5.1R BOOT 12 UGATE 11 Vout Q2B APM7313 C3 330uF C4 330uF PHASE 10 GND 9 APW7016 R7 3KJ R6 0R R8 NC Copyright ANPEC Electronics Corp. Rev. A.1 - Oct., 2002 6 www.anpec.com.tw APW7016 Package Information SO – 300mil ( Reference JEDEC Registration MS-013) D N H GAUGE PLANE E 1 2 3 A B e Millimeters Dim Min. Max. A 2.35 2.65 A1 0.10 0.30 B 0.33 0.51 D See variations E 7.40 e 7.60 1.27BSC L Variations- D Inches Variations- D Variations Min. Max. Dim SO-16 10.10 10.50 A 0.093 0.1043 SO-16 0.398 0.413 SO-18 11.35 11.76 A1 0.004 0.0120 SO-18 0.447 0.463 SO-20 12.60 13 B 0.013 0.020 SO-20 0.496 0.512 SO-24 15.20 15.60 D See variations SO-24 0.599 0.614 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 Min. Max. Variations Min. Max. 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 1 A1 8° Copyright ANPEC Electronics Corp. Rev. A.1 - Oct., 2002 7 0° 8° www.anpec.com.tw APW7016 Package Information SSOP-16 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 1.350 1.75 SSOP-16 4.75 5.05 A 0.053 0.069 0.187 0.199 A1 0.10 0.25 A1 0.004 0.010 B 0.20 0.30 B 0.008 0.012 D See variations D See variations E 3.75 E 0.147 e 4.05 0.625 TYP. e 0.160 0.025 TYP. H 5.75 6.25 H 0.226 0.246 L 0.4 1.27 L 0.016 0.050 See variations N See variations N φ1 0° φ1 8° Copyright ANPEC Electronics Corp. Rev. A.1 - Oct., 2002 8 SSOP-16 0° 8° www.anpec.com.tw APW7016 Physical Specifications Terminal Material Lead Solderability Solder-Plated Copper (Solder Material : 90/10 or 63/37 SnPb) Meets EIA Specification RSI86-91, ANSI/J-STD-002 Category 3. Reflow 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 Convection or IR/ Convection Average ramp-up rate(183°C to Peak) 3°C/second max. 120 seconds max Preheat temperature 125 ± 25°C) 60 – 150 seconds Temperature maintained above 183°C Time within 5°C of actual peak temperature 10 –20 seconds Peak temperature range 220 +5/-0°C or 235 +5/-0°C Ramp-down rate 6 °C /second max. 6 minutes max. Time 25°C to peak temperature VPR 10 °C /second max. 60 seconds 215-219°C or 235 +5/-0°C 10 °C /second max. Package Reflow Conditions pkg. thickness ≥ 2.5mm and all bgas 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.1 - Oct., 2002 9 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 APW7016 Reliability test program Test item SOLDERABILITY HOLT PCT TST ESD Latch-Up Method MIL-STD-883D-2003 MIL-STD-883D-1005.7 JESD-22-B, A102 MIL-STD-883D-1011.9 MIL-STD-883D-3015.7 JESD 78 Description 245°C , 5 SEC 1000 Hrs Bias @ 125 °C 168 Hrs, 100 % RH , 121°C -65°C ~ 150°C, 200 Cycles VHBM > 2KV, VMM > 200V 10ms , Itr > 100mA Carrier Tape & Reel Dimensions D P Po t E P1 Bo F W Ko Ao D1 T2 J C A B T1 Application SOP- 16 Application SSOP-16 A B C J W P E 100 +2 13+ 0.5 2 ± 0.5 T1 16.4 +0.3 -0.2 T2 330 ± 1 2.5 ± 0.5 16± 0.2 12± 0.1 1.75±0.1 F D D1 Po P1 Ao Bo Ko t 7.5± 0.1 1.5 +0.1 1.5+ 0.25 4.0 ± 0.1 2.0 ± 0.1 3.0± 0.1 0.3±0.013 A B D0 D1 E F P0 P1 P2 6.95 5.4 1.55±0.05 1.55±0.1 1.75±0.1 5.5±0.05 4.0±0.1 8.0±0.1 2.0±0.05 T T2 W W1 C1 C2 T1 T2 C 0.3±0.05 2.2 12.0±0.3 9.5 13±0.3 21±0.8 13.5±0.5 2.0±0.2 80±1 Copyright ANPEC Electronics Corp. Rev. A.1 - Oct., 2002 10 10.9 ± 0.1 10.8± 0. 1 (mm) www.anpec.com.tw APW7016 Cover Tape Dimensions Application SOP- 16 Carrier Width 24 Cover Tape Width 21.3 Devices Per Reel 1000 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.1 - Oct., 2002 11 www.anpec.com.tw