A Product Line of Diodes Incorporated AP3102/V/L GREEN MODE PWM CONTROLLER NEW PRODUCT Description Pin Assignments The AP3102/V/L series is a green-mode PWM controller with low start-up current. At normal operation, the switching frequency is externally programmable and trimmed to tight range, and the frequency dithering technique is also equipped to improve the EMI performance. When the load is very low or zero, the IC enters green mode and skip mode to minimize switching loss. In skip mode, the PWM switching frequency is about 20kHz to avoid the audible noise and reduce the standby loss. (Top View) The AP3102/V/L series features a lot of functions such as the Leading-Edge Blanking (LEB) of the current sensing, internal slope compensation, line compensation, and several protection functions including cycle-by-cycle current limit (OCP), over voltage protection (VCC or line voltage), OTP, OLP and brownout protection. GND 1 8 GATE FB 2 7 VCC BOK 3 6 SENSE RI 4 5 ADJ The AP3102/V/L series provides 3 different versions with optional protection functions. AP3102 has external trigger latch shutdown only (VOVP and OLP are auto recoverable). AP3102V supports both VOVP and external latch shutdown. AP3102L provides latch shutdown control for VOVP, OLP and external trigger. This IC is available in SO-8 package. Features SO-8 Applications Switching AC-DC Adapter LCD Monitor/TV Power Open Frame Switching Power Supply Bi-CMOS Process with Excellent Performance Very Low Start-up Current: 5μA Typical Current Mode Control Non-audible-noise Green Mode Control Frequency Foldback for High Average Efficiency Internal Slope Compensation Programmable Brownout Protection Programmable Line Compensation Useful Pin Fault Protection: SENSE Pin Floating RI Pin Short to Ground RI Pin Floating Smart Latch/Auto-recoverable Protection Option Comprehensive Protection Feature: VCC Over Voltage Protection (VOVP) Line Over Voltage Protection (LOVP) Over Temperature Protection (OTP) Over Load Protection (OLP) Internal Soft Start Function During Start-up 500mA Gate Output Current Capability Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) 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 Halogen- 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. AP3102/V/L Document number: DS37419 Rev.2 - 2 1 of 14 www.diodes.com July 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3102/V/L Typical Applications Circuit R9 10 VCB BD1 CX1 C1 100F J1 C2 2nF R2 100k R1 2M NEW PRODUCT T D1 FR107 C3 3.3 F 12V/3A Q1 7N60 R14 1k C8 0.1F C9 0.1 F R6 0.55 R7 18 k 7 5 6 VCC SENSE J2 C7 470 F R3 3.9 C4 47 F R4 20 8 L2 8H D3 C 10 1000F D2 D4 GATE C9 1nF R10 20k R11 5.1 k CY R12 4.7 k ADJ Q2 AZ431 U1 AP3102 R4 10 M GND FB 1 2 B OK 3 R13 620 RI 4 R8 27k U2 P817 R5 82k C5 10nF C6 6.8nF 4 1 3 2 For AP3102 Pin Descriptions Pin Number Pin Name 1 GND 2 FB Function Signal ground. Current return for driver and control circuits Feedback. Directly connected to the opto-coupler Brownout Protection Pin. Connected to a resistor divider from the ground to bulk capacitor for setting the brownout level and line compensation. When the voltage of this pin is lower than 0.5V and lasts 35ms, the PWM signal will be off and system enters the auto recoverable protection mode (hiccup mode). Moreover, this pin is also applied for line OVP (trigger level is 4V) and line compensation (compensate the current sense for over load protection.) 3 BOK 4 RI 5 ADJ 6 SENSE 7 VCC Supply voltage of driver and control circuits 8 GATE Gate driver output AP3102/V/L Document number: DS37419 Rev.2 - 2 Set the bias current to determine the normal switching frequency To adjust the level of skip cycle. When its value is greater than 4.5V, the system will be latched Current sense 2 of 14 www.diodes.com July 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3102/V/L Functional Block Diagram 16.2V 8.8V 7 4 UVLO Internal Bias VCC 155o C VDD NEW PRODUCT 33V Latch OVP OLP OTP Latch OVP OVP OLP Disable BOK OTP 28V Control Logic (Note*) Protect Logic Driver 8 15V 4.5V Latch ADJ D GATE Q CLK RB 25A 5 RI OSC 4V 5V 55k Disable OLP 1A 3 5K 2 2R FB 1.1V R 1 0.85V 0.9V 0.5V 2mS Soft Start LEB Latch Control Logic for AP3102 AP3102/V/L Document number: DS37419 Rev.2 - 2 5V 6 GND Note* BOK BOK Latch OVP Control Logic for AP3102V 3 of 14 www.diodes.com SENSE Latch OVP OLP Control Logic for AP3102L July 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3102/V/L Absolute Maximum Ratings (Note 4) Symbol Parameter VCC IO VFB, VSENSE NEW PRODUCT VRI, VADJ Rating Unit Power Supply Voltage 30 V Gate Output Current 500 mA Input Voltage to FB,SENSE pin -0.3 to 7 V Input Voltage to RI, ADJ pin -0.3 to 7 V θJA Thermal Resistance (Junction to Ambient) 186 ºC/W PD Power Dissipation and Thermal Characteristic, SENSE at TA<+25ºC 550 mW TJ Operation Junction Temperature -40 to +150 ºC TSTG Storage Temperature Range +150 ºC – ESD (Human Body Model) 2500 V – ESD (Machine Model) 250 V Note 4: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability. Recommended Operating Conditions Symbol Parameter Min Max Unit VCC Supply Voltage 10 25 V TA Ambient Operating Temperature Range -40 +85 ºC Electrical Characteristics Symbol (VCC =16V, TA=+25°C, unless otherwise specified.) Parameter Conditions Min Typ Max Unit A Supply Voltage (VCC Pin) ISTART-UP ICC Start-up Current Operating Supply Current – 5 15 VFB=0V, CL=1nF 1.5 2.5 3.5 VFB=3V, CL=1nF 2 3 4 16.2 17.2 V VCC=14.8V mA – UVLO (on) – 15.2 – UVLO (off) – 7.8 8.8 9.8 V – VCC OVP – 27 28.5 30 V – VCC Clamp ICC=5mA – – 34 V – De-Latch VCC – 4.5 6 7.5 V PWM Section/Oscillator Section – Maximum Duty Cycle – 70 75 80 – Minimum Duty Cycle – – 0 – – Oscillation Frequency RRI=26k 60 65 70 kHz – Frequency in Skip Mode RRI=26k 22 – – kHz o o % – Frequency Temperature Stability -40 C to +85 C – – 5 % – Frequency Voltage Stability VCC=12V to 30V – – 3 % – Frequency Dithering – – 6 – % AP3102/V/L Document number: DS37419 Rev.2 - 2 4 of 14 www.diodes.com July 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3102/V/L Electrical Characteristics Symbol (VCC =16V, TA=+25°C, unless otherwise specified.) (Cont.) Parameter Conditions Min Typ Max Unit Current Sense Section (SENSE Pin) NEW PRODUCT VCS Maximum SENSE Voltage VBOK=0.95V 0.75 0.8 0.85 VBOK=2.76V 0.63 0.68 0.73 V – LEB Time of SENSE RRI=26k 150 250 350 ns – Delay to Output – 50 150 250 ns – Soft-start Time RRI=26k – 2 – ms 3.5 V/V Feedback Input Section (FB Pin) – The Ratio of Input Voltage to Current Sense Voltage – 2.5 3 – Input Impedance – 3 4.5 6 k – Source Current – – – -2 mA – Input Voltage for Zero Duty VADJ=0V – – 1.2 V Output Section (GATE Pin) – Output Low Level IO=50mA, VCC=12V – – 1 V – Output High Level IO=50mA, VCC=12V 8.5 – – V – Output Clamping – 13 15 17 V – Rising Time CL=1nF, VCC=13V 150 250 350 ns – Falling Time CL=1nF, VCC=13V 30 50 90 ns Brownout Protection (BOK Pin) – Brownout Turn-on – 0.85 0.9 0.95 – Brownout Turn-off – 0.45 0.5 0.55 – Clamp Voltage on BOK IBOK=1mA 5.5 6.2 6.9 – Line Compensation Ratio – – 0.055 – – – Line OVP Voltage – 3.5 4 4.5 V V V Skip Cycle Section (ADJ Pin) – Source Current – 10 25 45 A – Latch Trigger Voltage – 4.2 4.5 4.8 V – Clamp Voltage on ADJ – 4 5 6 V – Input Impedance – 35 50 65 k – – +155 – o o Over-Temperature Protection Section – – Shutdown Temperature C Temperature Hysteresis – – +25 – – Delay 1 of Protection RRI=26k, Output short and OLP BOK pin trigger for turning off 25 35 45 ms – Delay 2 of Protection RRI=26k, ADJ, VCC OVP, Line OVP BOK pin trigger for turning on – 25 – s C Delay Time Section AP3102/V/L Document number: DS37419 Rev.2 - 2 5 of 14 www.diodes.com July 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3102/V/L Performance Characteristics Start-up Voltage vs. Ambient Temperature Shutdown Voltage vs. Ambient Temperature 17.0 9.9 16.8 9.7 Shutdown Voltage (V) Start-up Voltage (V) 16.4 16.2 16.0 15.8 15.6 9.5 9.3 9.1 8.9 8.7 8.5 15.4 8.3 15.2 8.1 15.0 -40 -20 0 20 40 60 80 100 -40 120 -20 0 20 40 60 80 100 120 140 o Ambient Temperature ( C) Ambient Temperature ( C) Start-up Current vs. Ambient Temperature Operation Current vs. Ambient Temperature o 4 8 Operation Current (mA) 7 Start-up Current (A) 6 5 4 3 2 3 2 1 1 0 -40 -20 0 20 40 60 80 100 0 -40 120 -20 0 20 o 40 60 80 100 120 140 o Ambient Temperature ( C) Ambient Temperature ( C) VBOK vs. Ambient Temperature Maximum VCS vs. Ambient Temperature 1.00 0.86 0.84 0.98 At VBOK=0.95V 0.96 0.82 0.94 0.80 VBOK (V) Maximum VCS (V) NEW PRODUCT 16.6 0.78 0.76 0.92 0.90 0.88 0.86 0.74 0.84 0.72 0.70 -40 0.82 -20 0 20 40 60 80 100 0.80 -40 120 Document number: DS37419 Rev.2 - 2 0 20 40 60 80 100 120 Ambient Temperature ( C) Ambient Temperature ( C) AP3102/V/L -20 o o 6 of 14 www.diodes.com July 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3102/V/L Performance Characteristics (Cont.) 200 29.75 180 fOSC Typical 160 29.50 140 29.25 fOSC (kHz) VCC OVP Voltage (V) Oscillation Frequency vs. Bias Resistor 30.00 29.00 28.75 120 100 80 60 28.50 40 28.25 20 28.00 -40 -20 0 20 40 60 80 100 120 10 140 15 20 Ambient Temperature ( C) Oscillation Frequency vs. Ambient Temperature (R8=27k) 30 35 40 45 VCC Start-up Current vs. VCC Voltage 8.0 90 VCC Start-up Current (A) fOSC Typical 80 fOSC (kHz) 25 Bias Resistor (k) o 70 60 6.0 4.0 2.0 50 40 -40 0.0 -20 0 20 40 60 80 100 120 140 0 4 8 12 16 VCC (V) o Ambient Temperature ( C) Operation Current vs. VCC Voltage 4 3 ICC (mA) NEW PRODUCT VCC OVP Voltage vs. Ambient Temperature 2 1 0 0 4 8 12 16 20 24 VCC (V) AP3102/V/L Document number: DS37419 Rev.2 - 2 7 of 14 www.diodes.com July 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3102/V/L Operation Description The AP3102/V/L is specifically designed for off-line AC-DC power supply used in LCD monitor, notebook adapter and battery charger applications. It offers a cost effective solution with versatile protection functions for system designer. Start-up Current and UVLO NEW PRODUCT The start-up current of AP3102/V/L is optimized to realize ultra low current (5A typical) so that VCC capacitor can be charged more quickly. The direct benefit of low start-up current is the availability of using large start-up resistor, which minimizes the resistor power loss for high voltage AC input. A UVLO comparator is included in AP3102/V/L to detect the voltage on the VCC pin. It ensures AP3102/V/L to draw adequate energy from holdup capacitor during power-on. The turn-on threshold is 16V and the turn-off threshold is 10V. Oscillator The oscillation frequency is programmed by the value of resistor R8, connected from pin RI to ground. The resistor will make a constant current source to determine the oscillation frequency by charging and discharging an internal capacitor. The oscillation frequency can be expressed as: f 1720 (kHz) R8(k) The recommended oscillation frequency is 40 to 130kHz from the EMI consideration. Current Sense Comparator and PWM Latch AP3102/V/L operates as a current mode controller; the output switch conduction is initiated by every oscillator cycle and terminated when the peak inductor current reaches the threshold level established by the FB pin. The inductor current signal is converted to a voltage signal by inserting a reference sense resistor RS. The inductor current under normal operating conditions is controlled by the voltage at FB pin, the relation between peak inductor current (IPK) and VFB is: I PK (VFB 0.9) / 3RS Abnormal operating conditions occur when the power supply output is overloaded or the output voltage sensing is lost. Under these conditions, the current sense comparator threshold will be internally clamped to a value related to the value of V BOK. As VBOK value is proportional to the input line voltage, the constant over load protection can be achieved by compensating the delay time effect from the input line. The maximum peak switch current is: I PK ( MAX ) (0.85 0.055VBOK ) / RS Leading-edge Blanking A narrow spike on the leading edge of the current waveform can usually be observed when the power MOSFET is turned on. A 250ns leadingedge blank is built-in to prevent the false-triggering caused by the turn-on spike. During this period, the current limit comparator is disabled and the gate driver can not be switched off. A resistor is usually connected to the current sense pin to avoid the PCB trace interference and it also can adjust the inductor peak current tinily by the resistance. Of course, adding a RC filter to CS pin is better to attenuate any unexpected noise. Built-in Slope Compensation It is well known that a continuous current mode SMPS may become unstable when the duty cycle exceeds 50%. The built-in slope compensation can improve the stability, so there is no need for design engineer to spend much time on that. FB Pin and Short Circuit Protection This pin is normally connected to the opto-coupler and always paralleled with a capacitor for loop compensation. When the voltage at this pin is greater than 4.2V (such as output short to ground or the opto-coupler is broken) and lasts for about 35ms, the IC will enter the protection mode. For AP3102, the system will enter hiccup mode to wait the VCC decreasing to low UVLO level, then the IC will try to restart until the failure removes. For AP3102V, the IC will be latched unless unplugging the AC socket. Moreover, if the voltage is less than 0.7V, the IC will stop the drive pulse immediately. Therefore, this feature can be used for short circuit protection, which makes the system immune from catastrophic failure. AP3102/V/L Document number: DS37419 Rev.2 - 2 8 of 14 www.diodes.com July 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3102/V/L Operation Description (Cont.) Brown-out and BOK Pin The switching converter normally has a suitable input range, thus it makes the switching component operate under the safe operation condition. Too low or too high input will bring large heat shock or voltage spike on the switching device. Brown-out and line OVP function will avoid the supply to be worked in the unwanted condition such as below minimum and over maximum line voltage. The internal BOK connection is shown as the figure below: VCB OVP 4V 1A NEW PRODUCT Disable R1 UVLO 3 OCP BOK BOK 0.9V 0.5V 0.85V + BOK 5V R2 6 SENSE From the figure, it is seen that the BOK is connected to the OCP comparator and used as feedforward to the V CS_MAX (Refer to current sense comparator description). The VBOK range for enable IC is 0.9 to 3.0V and disable range is under 0.5V or over 4V. When V BOK is over 4V (line OVP) or under 0.5V (brown-out trigger), the IC enters the auto-recoverable protection. The ratio of R1/R2 is used to adjust the line voltage divider value. 4V HV VON HV OK Range VOFF VCC 35mS UVLO No Gate No Gate Output No Gate Output ADJ Pin and Green Mode Operation Low standby loss is the main requirement for AC-DC off line power supply. The AP3102/V/L has a green mode operation to improve the light load or no load efficiency. When the load power becomes low and V FB decreases to the threshold value, the IC will enter the green mode which means the switching frequency will decrease with the load decrease. And when the load power becomes much lower, the IC will operate at the skip mode to reduce switching loss, core loss and other high frequency loss due to blanking the driver. In skipping mode, the high frequency pulses is about 25kHz for the best standby performance. 25A ADJ 5 Skip Cycle Driver Control Circuit RADJ 2R Slope Compensation A 2 FB R LEB 6 SENSE 0.85V AP3102/V/L Document number: DS37419 Rev.2 - 2 9 of 14 www.diodes.com July 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3102/V/L Operation Description (Cont.) The VADJ threshold is adjustable by changing the external resistor connected from pin ADJ to the ground. Adjusting the V ADJ voltage can optimize the standby power and audible noise for most applications. NEW PRODUCT Another function of ADJ pin is to use it as the latch trigger input. When the voltage at this pin is more than 4.5V, the system will be latched by limiting the VCC to a lower voltage. If the IC is started from bulk capacitor through resistor, the system will be latched until the bulk voltage decreases to a very low value just like unplugged the AC input. Then, the IC latch current can't be maintained and latch will be released (see description below). This function can be used as system OTP and other protection. System Protection and Pin Fault Protection AP3102/V/L provides versatile system and pin fault protections. The OCP comparator realizes the cycle-by-cycle current limiting (OCP). Cooperating with BOK compensation from the input line voltage, the IC realizes the constant over load protection (OLP). VCC over voltage protection can be applied as the primary OVP or opto-coupler broken protection. The AP3102/V/L also has pin fault connection protection including floating and short connection. The floating pin protection includes the RI, SENSE, FB, etc; the short pin protection includes the RI pin short protection. When these pins are floated or RI pin is shorted to ground, PWM switching will be disabled, thus protect the power system. Below figures show the relative timing sequences of system protections. Line OVP & Brown-Out Output Short VCC OVP (AP3102) Vo VBOK VFB 4V 4.2V 25S 35mS 28V 0.5V 25S 35mS VCC UVLO Gate drive Auto Recoverable Protection Mode Latch through ADJ Pin Output Short (AP3102L) VCC OVP (AP3102V, AP3102L) Vo VFB 4V >25S VADJ VCC 4.2V 35mS VADJ UVLO UVLO Gate drive 28V 25S De-latch Point Latch until unplug AC Latch Protection Mode Typical Timing Sequences of AP3102/V/L Protections AP3102/V/L Document number: DS37419 Rev.2 - 2 10 of 14 www.diodes.com July 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3102/V/L Ordering Information AP3102/V/L X XX - XX NEW PRODUCT Product Name Product Version Package Packing Blank: AP3102 V: AP3102V L: AP3102L M: SO-8 TR : Tape & Reel Blank: Tube RoHS/Green G1 : Green Diodes IC’s Pb-free products with "G1" suffix in the part number, are RoHS compliant and green. Package Temperature Range SO-8 -40 to +85oC Part Number Marking ID Packing AP3102M-G1 3102M-G1 100/Tube AP3102MTR-G1 3102M-G1 4000/Tape & Reel AP3102VM-G1 3102VM-G1 100/Tube AP3102VMTR-G1 3102VM-G1 4000/Tape & Reel AP3102LM-G1 3102LM-G1 100/Tube AP3102LMTR-G1 3102LM-G1 4000/Tape & Reel Product Version Classification (with Different Protection Functions) Product Version External Trigger by ADJ VOVP Output Short (OLP) AP3102 Latch Auto-Recoverable Auto-Recoverable AP3102V Latch Latch Auto-Recoverable AP3102L Latch Latch Latch Marking Information (Top View) First and Second Lines: Logo and Marking ID (See Ordering Information) Third Line: Date Code Y: Year WW: Work Week of Molding A: Assembly House Code th th XX: 7 and 8 Digits of Batch No. AP3102/V/L Document number: DS37419 Rev.2 - 2 11 of 14 www.diodes.com July 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3102/V/L Package Outline Dimensions (All dimensions in mm(inch).) (1) Package Type: SO-8 4.700(0.185) 5.100(0. 201) 7° ~ 9° 0.320(0. 013) TYP 1.350(0. 053) 1.750(0. 069) NEW PRODUCT 8° 8° ~ 9° 7° 0.600(0. 024) 0.725(0. 029) D 5.800(0. 228) 6.200(0. 244) 1.270(0. 050) TYP D 20:1 0.300(0. 012) R0.150(0.006) 0.100(0. 004) 1.000(0. 039) TYP 3.800(0. 150) Option 1 4.000(0. 157) 0.300(0. 012) 0.150(0. 006) 0.250(0. 010) Option 1 0° 8° 1° 7° 0.510(0. 020) R0.150(0.006) 0.450(0. 017) 0.820(0. 032) Option 2 0.350(0. 014) TYP Note: Eject hole , oriented hole and mold mark is optional . AP3102/V/L Document number: DS37419 Rev.2 - 2 12 of 14 www.diodes.com July 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3102/V/L Suggested Pad Layout (1) Package Type: SO-8 NEW PRODUCT Grid placement courtyard G Z Y E X Dimensions Z (mm)/(inch) G (mm)/(inch) X (mm)/(inch) Y (mm)/(inch) E (mm)/(inch) Value 6.900/0.272 3.900/0.154 0.650/0.026 1.500/0.059 1.270/0.050 AP3102/V/L Document number: DS37419 Rev.2 - 2 13 of 14 www.diodes.com July 2014 © Diodes Incorporated A Product Line of Diodes Incorporated AP3102/V/L 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). 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