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APW7016
Advanced PWM Power Controller
Features * * *
Simple Single-Loop Control Design
General Description
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
Excell Output Voltage Regulation
-PWM Output : 1% Over Temperautre
Fast Transient Response
* * *
-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 OCSET SS VID0 VID1 VID2 COMP FB 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 RT VCC LGATE PGND BOOT UGATE PHASE 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
H a n d lin g C o d e Tem p. R ange P ackage C ode 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
N : SSO P - 16
TR : Tape & R eel
A P M 7 0 1 6 K /N :
APM 7017 XXXXX
X X X X X - D a te C o d e
Block Diagram
VCC
VSEN
115%
+ OVP
Power on Reset
DETN (Power on Reset) OCSET
SS OC DETN (Power on Reset)
SOFT START
UGATE PHASE + CP1 OC
VID0 VID1 VID2 FB COMP
TTL D/A CONVERER (DAC)
DAC OUT + -
ERRAMP
+ + -
CP4
200A BOOT UGATE
DETN, OC
OSC
DRIVER
PHASE LGATE PGND GND
DETN (Power on Reset)
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
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
Copyright ANPEC Electronics Corp. Rev. A.1 - Oct., 2002
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APW7016
Thermal Characteristics
Symbol R JA Parameter Thermal Resistance in Free Air SOP , SSOP SOP (with 3in of Copper)
2
Value 110 86
Unit C/W
Electrical Characteristics
Recommended operating conditions , unless otherwise noted
Symbol Parameter Test Conditions UGATE and LGATE open Vocset=4.5V Vocset=4.5V RT= Open RT= Open APW7016 Typ. Max. 3 10.7 8.2 185 200 2 215 Unit mA V V kHz VP-P V V % dB MHz V/s mA 10 6.5 120 230 mA % A A
Min.
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 RUGATE RUGATE RLGATE RLGATE Protection Over-Voltage Trip (VSEN /DACOUT) IOCSET ISS OCSET Current Source Soft Start Current UGATE Source UGATE Sink LGATE Source LGATE Sink
0.8 3.0 -1.0 88 15 6 350 350 500 5.5 450 3.5 115 VOCSET=4.5VDC 170 200 10 +1.0
COMP=20pF VCC=12V , VUGATE =6V VUGATE-PHASE =1V VCC=12V , VLGATE =1V VLGATE =1V
Copyright ANPEC Electronics Corp. Rev. A.1 - Oct., 2002
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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. OCSET(pin 2) Connect a resistor(ROCSET) from this pin to the drain of the upper MOSFET. An internal 200A 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 : IOCSET * ROCSET rDS(ON) 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. PGND(pin 13) PGND pin provides the power ground connection. Connect this pin to the source of the lower MOSFET. LGATE (pin 14) 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. 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. UGATE (pin 11) Connect UGATE to the upper MOSFET gate. This pin enables the gate drive signal to drive the upper MOSFET . BOOT (pin 12) IPEAK= 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.
An over-current trip resets the soft-start function. SS (Pin 3) Connect a capacitor from this pin to ground. This capacitor, along with an internal 10A current source, sets the soft-start interval of the converter. VID0-2 (Pins 4-6) 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. 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. 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
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APW7016
Table 1 Output Voltage Program
Pin Name
VID2 VID1 VID0
Nominal Output Voltage Dacout 1.3 1.35 1.4 1.45 1.5 1.55 1.6 1.65
1 1 1 1 0 0 0 0
1 1 0 0 1 1 0 0
1 0 1 0 1 0 1 0
Typical Performance Curve
RT(K) vs. Switching frequency
10000
1000
RT(K)
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
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APW7016
Application Schematic
C6 220PF C5 0.1uF 12V R1 10R L1 1uH 5V R4 1.2KJ Q1 Q2A APM7313 C2 330uF C1 10uF
1 VSEN 2 OCSET 3 SS
C7 0.1uF
RT 16 VCC 15 LGATE 14 PGND 13 BOOT 12 UGATE 11 PHASE 10 GND 9
R2 5.1R
L2 4.7uH R3 5.1R Vout Q2B APM7313 C3 330uF C4 330uF
4 VID0 5 VID1 6 VID2 7 COMP
C9 2700PF R5 150KJ
8 FB
C8 10PF
APW7016
R7 3KJ R6 0R
R8 NC
Copyright ANPEC Electronics Corp. Rev. A.1 - Oct., 2002
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APW7016
Package Information
SO - 300mil ( Reference JEDEC Registration MS-013)
D N
H
E
GAUGE PLANE
123 A e B A1 L
1
Millimeters Dim A A1 B D E e H L N 1 Min. 2.35 0.10 0.33 Max. 2.65 0.30 0.51
Variations- D Variations SO-16 SO-18 SO-20 SO-24 SO-28 SO-14 Min. 10.10 11.35 12.60 15.20 17.70 8.80 Max. 10.50 11.76 13 15.60 18.11 9.20 Dim A A1 B D E e H L N 1
Inches Min. 0.093 0.004 0.013 Max. 0.1043 0.0120 0.020
Variations- D Variations SO-16 SO-18 SO-20 SO-24 SO-28 SO-14 Min. 0.398 0.447 0.496 0.599 0.697 0.347 Max. 0.413 0.463 0.512 0.614 0.713 0.362
See variations 7.40 7.60
See variations 0.2914 0.2992
1.27BSC 10 0.40 10.65 1.27
0.050BSC 0.394 0.016 0.419 0.050
See variations 0 8
See variations 0 8
Copyright ANPEC Electronics Corp. Rev. A.1 - Oct., 2002
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APW7016
Package Information
SSOP-16
D N
H
E
GAUGE PLANE
123 A e B A1 L
1
Millimeters Dim A A1 B D E e H L N 1 Min. 1.350 0.10 0.20 3.75 5.75 0.4 0 Max. 1.75 0.25 0.30 4.05 6.25 1.27 8
Variations- D Variations SSOP-16 Min. 4.75 Max. 5.05 Dim A A1 B D E e H L N 1
Inches Min. 0.053 0.004 0.008 0.147 0.226 0.016 0 0.069 0.010 0.012 0.160 0.246 0.050 8
Variations- D Min. 0.187 Max. 0.199 SSOP-16
Max. Variations
See variations 0.625 TYP.
See variations 0.025 TYP.
See variations
See variations
Copyright ANPEC Electronics Corp. Rev. A.1 - Oct., 2002
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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)
Reference JEDEC Standard J-STD-020A APRIL 1999
temperature Peak temperature
183C Pre-heat temperature
Time
Classification Reflow Profiles
Convection or IR/ Convection Average ramp-up rate(183C to Peak) 3C/second max. 120 seconds max Preheat temperature 125 25C) 60 - 150 seconds Temperature maintained above 183C Time within 5C of actual peak temperature 10 -20 seconds Peak temperature range 220 +5/-0C or 235 +5/-0C Ramp-down rate 6 C /second max. 6 minutes max. Time 25C to peak temperature VPR 10 C /second max.
60 seconds 215-219C or 235 +5/-0C 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 mm pkg. thickness < 2.5mm and pkg. volume < 350mm Convection 235 +5/-0 C VPR 235 +5/-0 C IR/Convection 235 +5/-0 C
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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 245C , 5 SEC 1000 Hrs Bias @ 125 C 168 Hrs, 100 % RH , 121C -65C ~ 150C, 200 Cycles VHBM > 2KV, VMM > 200V 10ms , Itr > 100mA
Carrier Tape & Reel Dimensions
Po E P1 P D
t
F W
Bo
Ao
Ko D1
T2
J C A B
T1
Application
A 330 1
B 100 +2 D 1.5 +0.1 B 5.4 T2 2.2
C 13+ 0.5 D1 1.5+ 0.25 D0 1.550.05 W 12.00.3
J 2 0.5 Po 4.0 0.1 D1 1.550.1 W1 9.5
10
T1 16.4 +0.3 -0.2 P1 2.0 0.1 E 1.750.1 C1 130.3
T2 2.5 0.5 Ao
W 16 0.2 Bo
P 12 0.1 Ko 3.0 0.1 P1 8.00.1 T2 2.00.2
E 1.750.1 t 0.30.013 P2 2.00.05 C 801
SOP- 16
F 7.5 0.1
10.9 0.1 10.8 0. 1 F 5.50.05 C2 210.8 P0 4.00.1 T1 13.50.5
Application
A 6.95
SSOP-16
T 0.30.05
Copyright ANPEC Electronics Corp. Rev. A.1 - Oct., 2002
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(mm)
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
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