AP2014/A
Document overview
- Manufacturer or author: Diodes Incorporated
- PDF pages: 14
Technical content
Features
Synchronous Controller in 8-Pin Package Operating with Single 5V or 12V Supply Voltage Internal 200kHz Oscillator (400kHz for AP2014A) Soft-Start Function Fixed Frequency Voltage Mode 500mA Peak Output Drive Capability Protects the Output when Control FET is Shorted SO-8 Package Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Pin Assignments FB VcLDrv HDrv VCC SS Comp GND ( Top View ) SO-8
Applications
Graphic Card Hard Disk Drive DDR Memory Source Sink Vtt Application Low Cost On-Board DC to DC such as 5V to 3.3V, 2.5V or 1.8V Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Hal ogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. PART OBSOLETE - NO ALTERNATE PART
Document number: DS31087 Rev. 6 - 4 2 of 14 www.diodes.com August 2020 © Diodes Incorporated AP2014/A OBSOLETE – PART DISCONTINUED Typical Applications Circuit (1) 10nF Q2 C17 0.1m VIN=5V C12 470m Vc=12V 470m VOUT +1.5V/7.0A Q1 L1 5.6m/9.0 22k AP2014/A C13 470mC20 100p 0.47m 8.2 0.1m 3.3K C11 0.1m 820 4 5 8FB Vcc LDrv GND HDrv Vc Comp SS (2) VOUT +1.5V/7.0A 0.47m 8.2 C13 470m 0.1m C8 470m 3.3k C11 0.1m AP2014/A 4 5 8FB Vcc LDrv GND HDrv Vc Comp SS C12 470m 820 6.8k VIN=12V C20 100p Option 0.1m 10n C17 0.1m 100m 5.6m/9A 1N4148 1N4148 Single Supply 12V Input
Document number: DS31087 Rev. 6 - 4 3 of 14 www.diodes.com August 2020 © Diodes Incorporated AP2014/A OBSOLETE – PART DISCONTINUED Typical Applications Circuit (Cont.) (3) VOUT +5V/5.0A 0.47m 8.2 C13 470m 0.1m C8 470m C11 0.1m AP2014/A 4 5 8FB Vcc LDrv GND HDrv Vc Comp SS 10k 39k VIN=12V C20 100p 0.1m 10nF C17 0.1m 100m 10mH/6A 1N4148 1N4148 Single Supply 12V Input (4) VOUT +5V/4.0A 0.47m C13 470m 0.1mF C8 470m 3.3K C11 0.1m AP2014/A 4 5 8FB Vcc LDrv GND HDrv Vc Comp SS 10K Q1-1 47k VIN=24V C20 100p 0.1m 10nF Q1-2 C17 0.1m 100m 10mH/6A 1.2K RZD 8.2 ZD 6.2V 1N4148 1N4148 IZD(≧15mA)=(VIN-VD2-VZD)/RZD Single Supply 24V Input
Document number: DS31087 Rev. 6 - 4 4 of 14 www.diodes.com August 2020 © Diodes Incorporated AP2014/A OBSOLETE – PART DISCONTINUED Typical Applications Circuit (Cont.) (5) 4.7m C10 470m 470m +12V C15 470moptional C12 470m C20 10p 0.1m +12V_BUSR4 +12V C11 0.1m 39k SBD VOUT +1.26V C13 470m 470m 5600pF AP2014/A 4 5 8FB Vcc LDrv GND HDrv Vc Comp SS C17 0.1m 2.2k 70T03H 70T03H
Document number: DS31087 Rev. 6 - 4 5 of 14 www.diodes.com August 2020 © Diodes Incorporated AP2014/A OBSOLETE – PART DISCONTINUED Typical Applications Circuit (Cont.) (6) Dual Supply, 5V Bus and 12V Bias Input SS Fb Comp GND LDrv Vcc HDrv Vc AP2014/A 0.1mF 10nF 3.3k 10mH 100mF 1mH C4 47mF 1.8V/1A 2.5V/2A 0.1mF AP1187 12V SS Fb Comp GND LDrv Vcc HDrv Vc AP2014/A C13 0.1mF C14 10nF 3.3k 1.65k C11 3.3V/1.8A C12 220mF 0.1mF 1mF 47mF C10 1mF 10mH 220mF Dual Supply, 5V Bus and 12V Bias Input
Document number: DS31087 Rev. 6 - 4 6 of 14 www.diodes.com August 2020 © Diodes Incorporated AP2014/A OBSOLETE – PART DISCONTINUED Pin Descriptions Pin Name Pin No. Description FB 1 This pin is connected directly to the output of the switching regulator via resistor divider to provide feedback to the Error amplifier. Vcc 2 This pin provides biasing for the internal blocks of the IC as well as power for the low side driver. A minimum of 1 uF, high frequency capacitor must be connected from this pin to ground to provide peak drive current capability. LDrv 3 Output driver for the synchronous power MOSFET. GND 4 This pin serves as the ground pin and must be connected directly to the ground plane. A high frequency capacitor (0.1 to 1uF) must be connected from V5 and V12 pins to this pin for noise free operation. HDrv 5 Output driver for the high side power MOSFET. Vc 6 This pin is connected to a voltage that must be at least 4V higher than the bus voltage of the switcher (assuming 5V threshold MOSFET) and powers the high side output driver. A minimum of 1 uF, high frequency capacitor must be connected from this pin to ground to provide peak drive current capability. Comp 7 Compensation pin of the error amplifier. An external resistor and capacitor network is typically connected from this pin to ground to provide loop compensation. SS 8 This pin provides soft -start for the switching regulator. An internal current source charges an external capacitor that is connect ed from this pin to ground which ramps up the output of the switching regulator, preventing it from overshooting as well as limiting the input current. The converter can be shutdown by pulling this pin below 0.5V. Functional Block Diagram SS Fb Comp GND LDrv Vcc HDrv Vc 25k 25k 1.25V POR 20mA 64mA Max Error Amp + OscillatorCt Error Comp S R Q Reset Dom Bias GeneratorVcc 4.0V Vc 3.5V 0.2V 0.2V 1.25V POR FbLo Comp 0.5V POR
Document number: DS31087 Rev. 6 - 4 7 of 14 www.diodes.com August 2020 © Diodes Incorporated AP2014/A OBSOLETE – PART DISCONTINUED Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.) Symbol Parameter Rating Unit VCC VCC Supply Voltage 20 V VC VC Supply Voltage (Not Rated for Inductive Load) 32 V TST Storage Temperature Range -65 to +150 °C TOP Operating Junction Temperature Range 0 to +125 °C θJC Thermal Resistance Junction to Case (Note 4) 7 °C/W θJA Thermal Resistance Junction to Ambient (Note 4) 160 °C/W Note: 4. Test conditions for SO-8: Device mounted on 2oz copper, minimum recommended pad layout, FR-4 PCB. Electrical Characteristics (@TA = +25°C, unless otherwise specified.) Unless otherwise specified, these specifications apply over VCC=5V, VC=12V and TA=0 to +70°C. Typical values refer to TA =+25°C. Low duty cycle pulse testing is used which keeps junction and case temperatures equal to the ambient temperature. Symbol Parameter Conditions Min. Typ. Max. Unit Reference Voltage LREG FB Voltage Line Regulation 5V < VCC < 12V - 0.2 0.35 % UVLO UVLO VCC UVLO Threshold - VCC Supply Ramping Up 4.0 4.2 4.4 V UVLO Hysteresis - VCC - 0.25 - V UVLO VC UVLO Threshold - VC Supply Ramping Up 3.1 3.3 3.5 V UVLO Hysteresis - VC - 0.2 - V UVLO VFB UVLO Threshold - VFB FB Ramping Down (AP2014) 0.4 0.6 0.8 V FB Ramping Down (AP2014A) 0.3 0.4 0.5 V UVLO Hysteresis - VFB - - 0.1 - V Supply Current Operation ICC VCC Operation Supply Current Freq=200kHz, CL=1500pF - 7 10 mA Operation IC VC Operation Supply Current Freq=200kHz, CL=1500pF - 7 10 mA ICCQ VCC Static Supply Current VSS=0V - 3.3 6 mA ICQ VC Static Supply Current VSS=0V - 1 4.5 mA Soft-Start Section SSIB Charge Current VSS=0V 10 20 30 μA Error Amp IFB1 FB Voltage Input Bias Current VSS=3V, VFB=1V - -0.1 - μA IFB2 FB Voltage Input Bias Current VSS=0V, VFB=1V - -64 - μA gm Transconductance - 450 600 750 μmho Oscillator Freq Frequency AP2014 170 200 230 kHz AP2014A 340 400 460 kHz VRAMP Ramp-Amplitude Voltage - 1.225 1.25 1.275 V Output Drivers tR Rise Time CL =1500pF - 50 100 ns tF Fall Time CL =1500pF - 50 100 ns tDB Dead Band Time - 50 150 250 ns tON Max Duty Cycle VFB =1V, Freq=200kHz 85 90 95 % tOFF Min Duty Cycle VFB=1.5V 0 0 - %
Document number: DS31087 Rev. 6 - 4 8 of 14 www.diodes.com August 2020 © Diodes Incorporated AP2014/A OBSOLETE – PART DISCONTINUED Typical Performance Characteristics Frequency vs. VIN 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 VIN (V) Frequency (KHz) 0.0% 0.5% 1.0% 1.5% 2.0% Load Regulation (%) IOUT (A) Load Regulation 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Efficiency (%) IOUT (A) Efficiency vs. IOUT 1.240 1.245 1.250 1.255 1.260 Feedback Voltage (V) VIN (V) Line Regulation 2.500 2.505 2.510 2.515 2.520 2.525 2.530 Output Voltage (V) VIN (V) Line Regulation 150.0 160.0 170.0 180.0 190.0 200.0 210.0 220.0 230.0 240.0 -40 -20 0 25 50 75 100 125 Frequency (KHz) Temperature (oC) Frequency vs. Temperature
Document number: DS31087 Rev. 6 - 4 9 of 14 www.diodes.com August 2020 © Diodes Incorporated AP2014/A OBSOLETE – PART DISCONTINUED Typical Performance Characteristics (Cont.) 3.00 5.00 7.00 9.00 11.00 13.00 15.00 4.5 5 7 9 11 12 15 Icc and Iccq (mA) VIN (V) Icc and Iccq vs. VIN Icc(mA) Iccq(mA) 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 4.5 5 7 9 11 12 15 Ic and Icq (mA) VIN (V) Ic and Icq vs. VIN Ic(mA) Icq(mA) 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 -40 -20 0 25 50 75 100 125 Icc and Ic (mA) Temperature (oC) Icc and Ic vs. Temperature Icc(mA) Ic(mA) 1.20 1.22 1.24 1.26 1.28 1.30 -40 -20 0 25 50 75 100 125 Feedback Voltage (V) Temperature (oC) VFB vs. Temperature 3.0 5.0 7.0 9.0 11.0 13.0 15.0 17.0 19.0 21.0 6 8 10 12 14 16 18 20 22 24 Vc (V) AP2014A Ic and Icc vs Vc Ic(mA) Icc(mA) 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 6 8 10 12 14 16 18 20 22 24 Vc (V) AP2014 Ic and Icc vs Vc Ic(mA) Icc(mA)
Document number: DS31087 Rev. 6 - 4 10 of 14 www.diodes.com August 2020 © Diodes Incorporated AP2014/A OBSOLETE – PART DISCONTINUED Typical Performance Characteristics (Cont.) VOUT Ripple VCC=5V; VC=12V; VOUT=2.5V IOUT=0.5A, VRIPPLE=30.8mV VOUT Ripple VCC=5V; VC=12V; VOUT=2.5V IOUT=5A, VRIPPLE=33.2mV Dead time vs. IOUT VCC=5V, VC=12V, VOUT=2.5V, IOUT=0.5A, Temp=+28oC Dead time = 150ns Dead time = 150ns Dead time vs. IOUT VCC=5V, VC=12V, VOUT=2.5V, IOUT=5A , Temp=+28oC Dead time = 160ns Dead time = 150ns Highside GATE Lowside GATE Phase Lowside GATE Highside GATE Phase
Document number: DS31087 Rev. 6 - 4 11 of 14 www.diodes.com August 2020 © Diodes Incorporated AP2014/A OBSOLETE – PART DISCONTINUED Functional Descriptions Introduction The AP2014A is a fixed frequency, voltage mode synchronous controller and consists of a precision reference voltage, an error amplifier, an internal oscillator, a PWM comparator, 0.5A peak gate driver, soft-start and shutdown circuits (see Block Diagram). The output voltage of the synchronous converter is set and controlled by the output of the error amplifier; this is the amplified error signal from the sensed output voltage and the reference voltage. This voltage is compared to a fixed frequency linear sawtooth ra mp and generates fixed frequency pulses of variable duty -cycle, which drives the two N-channel external MOSFETs. The timing of the IC is provided through an internal oscillator circuit which uses on -chip capacitor to set t he oscillation frequency to 200kHz (400kHz for “A” version). Soft-Start The AP2014 has a programmable soft-start to control the output voltage rise and limit the current surge at the start -up. To ensure correct start-up, the soft-start sequence initiates when the VC and VCC rise above their threshold (3.3V and 4.2V respectively) and generates the Power On Reset (POR) signal. Soft -start function operates by sourcing an internal current to charge an external capacitor to about 3V. Initially, the soft -start function clamps the E/A’s output of the PWM converter. As the charging voltage of the external capacitor ramps up, the PWM signals increase from zero to the point the feedback loop takes control. Short-Circuit Protection The outputs are protected against the short circuit. The AP2014 prote cts the circuit for shorted output by sensing the output voltage (through the external resistor divider). The AP2014 shuts down the PWM signals, when the output voltage drops below 0.6V (0.4V for AP2014A). The AP2014 also protects the output from over -voltaging when the control FET is shorted. This is done by turning on the sync FET with the maximum duty cycle. Under-Voltage Lockout The under-voltage lockout circuit assures that the MOSFET driver outputs remain in the off state whenever the supply voltage drops below set parameters. Lockout occurs if V C and VCC fall below 3.3V and 4.2V respectively. Normal operation resumes once V C and VCC rise above the set values. IC Quiescent Power Dissipation Power dissipation for IC controller is a function of applied voltage, gate driver loads and switching frequency. The IC's maximum power dissipation occurs when the IC operating with single 12V supply voltage (VCC=12V and VC24V) at 400kHz switching frequency and maximum gate loads. Page 8 shows voltage vs. current, when the gate drivers loaded with 1500pF capacitors. The IC's power dissipation results in an excessive temperature rise. This should be considered when using AP2014A for such application.
Document number: DS31087 Rev. 6 - 4 12 of 14 www.diodes.com August 2020 © Diodes Incorporated AP2014/A OBSOLETE – PART DISCONTINUED
Ordering Information
13 : Tape & ReelS : SO-8 G : Green Device (Note 5) Package Code Package (Note 6) Green Quantity Part Number Suffix Status (Note 5) Tube 13’’Tape and reel AP2014ASG-
13 S SO-8 Green 2500 NA -13 In production
Notes: 5. All Lead-Free variants are End of Life without replacement. AP2014SG-13 is End of Life without replacement. 6. For packaging details, go to our website at https://www.diodes.com/design/support/packaging/diodes -packaging/. Marking Information (1) SO-8 ( Top View ) AP2014X YY WW X X Logo Part Number WW : Week : 01~52; 52 YY : Year : 08, 09,10~ X : Internal Code represents 52 and 53 week L : Lead Free AP2014 : 200KHz (OSC) AP2014A : 400KHz (OSC) G : Green
Document number: DS31087 Rev. 6 - 4 13 of 14 www.diodes.com August 2020 © Diodes Incorporated AP2014/A OBSOLETE – PART DISCONTINUED Package Outline Dimensions (All dimensions in mm.) Please see http://www.diodes.com/package-outlines.html for the latest version. SO-8 SO-8 Dim Min Max Typ A 1.40 1.50 1.45 A1 0.10 0.20 0.15 b 0.30 0.50 0.40 c 0.15 0.25 0.20 D 4.85 4.95 4.90 E 5.90 6.10 6.00 E1 3.80 3.90 3.85 E0 3.85 3.95 3.90 e -- -- 1.27 h - -- 0.35 L 0.62 0.82 0.72 Q 0.60 0.70 0.65 All Dimensions in mm Suggested Pad Layout Please see http://www.diodes.com/package-outlines.html for the latest version. SO-8 Dimensions Value (in mm) C 1.27 X 0.802 X1 4.612 Y 1.505 Y1 6.50 b e E A 9° (All sides) 4°±3° c Q h 45° R 0.1 D L Seating Plane Gauge Plane C X Y
Document number: DS31087 Rev. 6 - 4 14 of 14 www.diodes.com August 2020 © Diodes Incorporated AP2014/A OBSOLETE – PART DISCONTINUED IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license unde r its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diod es Incorporated website, harmless against all damages. Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or u nauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising ou t of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. Products described herein may be covered by one or more United States, internation al or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks. This document is written in English but may be translated into mul tiple languages for reference. Only the English version of this document is the final and determinative format released by Diodes Incorporated. LIFE SUPPORT Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or system s without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided i n the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support d evices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety -critical, life support devices or systems, notwithstanding any devices - or systems -related information or support that may be p rovided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2020, Diodes Incorporated www.diodes.com