AP3783R
Document overview
- Manufacturer or author: Diodes Incorporated
- PDF pages: 17
Technical content
Features
Less than 30mW Standby Power Consumption Meet Efficiency Requirement of COC Trier2 Valley Turn-on to Reduce Switching Loss and Improve EMI Piece-wise Frequency Reduction to Enhance Conversion Efficiency and Suppress Audio Noise Over Voltage Protection (OVP) Over Temperature Protection (OTP) Short Circuit Protection (SCP) with Hiccup 3-Segment Drive Current for Radiative EMI Suppression Operating Frequency Jitter Function for Conductive EMI Suppression Drive MOSFET for 5W to 20W Battery Charger/Adapter
Applications
SOT26 SMD Package Comply with Level 3 of IPC/JEDEC J-STD- 033A Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/ Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Ha logen- 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.
Document number: DS37448 Rev. 8 - 2 2 of 17 www.diodes.com October 2019 © Diodes Incorporated AP3783R Typical Applications Circuit APR3415 VCC AREF DRAIN DRAIN GND GND VDET DRISR C2 R2 CIN2 FR1 Da FB RFB1 DRI CPC RCS RFB2 CS CVCC GND VCC CCPC RST1 RST2 5V/2A DIN R1C1 CY1 AP3783R CIN1 Np Na + + LIN Ra 3 4 COUT Ns With APR3415 (VOUT=5V/2A) Pin Descriptions Pin Number Pin Name Function 1 CS The CS is the current sense pin of the IC. The IC will turn off the power MOSFET according to the voltage on the CS pin
2 GND The ground of the controller
3 VCC
The VCC pin supplies the power for the IC. In order to get the correct operation of the IC, a capacitor with low ESR should be placed as close as possible to the VCC pin
4 FB The CV and CC regulation are realized based on the voltage sampling of this pin
5 DRI Output pin to drive external MOSFET
6 CPC
A capacitor about 50nF should be connected to this pin. The voltage of CPC pin is linear to load of the system and it is used for the functio ns of cable voltage drop compensation and audio noise suppression
Document number: DS37448 Rev. 8 - 2 3 of 17 www.diodes.com October 2019 © Diodes Incorporated AP3783R Functional Block Diagram Regulator Bias OVP/SCP/OTP/ OCkP/Max tONP PFM UVLO CV_CTRL PFM Driver R Q S R Q S FB CS CPC VCC DRI GND Constant Voltage Control Constant Current Control 0.83V
4 COMP
& LEB Pro Shutdown Line Compensation Timer UV/OV UV/OV VCS_X Select Valley _on Vload CC_CTRL CS LL Mode VCS_X Light Load Detection LL ModeCable Compensation VLOAD UV Detect_on Low Pass Filter VCPC VCS_X tONS tOFF tONS Detector Dyn VFB_REF VLINE VCS_REF tONS t 256ms t 256ms tDELAY Dynamic ResponsetDELAY
Document number: DS37448 Rev. 8 - 2 4 of 17 www.diodes.com October 2019 © Diodes Incorporated AP3783R Absolute Maximum Ratings (Note 4) Symbol Parameter Rating Unit VCC Supply Voltage -0.3 to 35 V VCS, VCPC Voltage on CS, CPC Pin -0.3 to 7 V VFB FB Input Voltage -0.4 to 10 V ISOURCE Source Current from OUT Pin Internally Limited A TJ Operating Junction Temperature -40 to +150 ºC TSTG Storage Temperature -65 to +150 ºC TLEAD Lead Temperature (Soldering, 10 sec) +300 ºC θJA Thermal Resistance (Junction to Ambient) (Note 5) 200 ºC/W ESD ESD (Human Body Model) 6000 V ESD (Charged Device Model) 400 V Note: 4. Stresses greater than those listed under Absolute Maximum Ratings can 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 can affect device reliability. 5. Test condition: Device mounted on FR-4 substrate PC board, 2oz copper, with 1inch2 cooling area. Recommended Operating Conditions Symbol Parameter Min Max Unit VCC Supply Voltage — 25 V TOP Operating Temperature Range -40 +105 °C fS(MAX) Maximum Operating Frequency — 80 kHz Electrical Characteristics (@VCC=15V, TA=+25° C, unless otherwise specified.) Symbol Parameter Conditions Min Typ Max Unit STARTUP AND UVLO SECTION VTH_ST Startup Threshold — 13 15.5 18 V VOPR(MIN) Minimal Operating Voltage — 6 6.8 7.6 V STANDBY CURRENT SECTION IST Startup Current VCC=VTH_ST-1V before startup 0 0.2 0.6 mA ICC_OPR Operating Current Static current @ no load 350 500 650 DRIVING OUTPUT SECTION VGATE Gate Voltage — 10 11 12 V ISOURCE_L Low Driver Source Current — 38 43 48 mA ISOURCE_H High Driver Source Current — 100 110 120 mA VTH High/Low Drive Source Current Threshold Voltage — 6 6.5 7 V RSINK Sink Resistance — 5.5 6.5 7.5 OPERATING FREQUENCY SECTION (LL MODE TO FULL LOAD) fS(MAX) Maximum Operating Frequency IO(MAX) (Note 6) – – 70 kHz tSAMPLE_H Sample Time 37% to 100% IO(MAX) 3.8 4.2 4.6 μs tSAMPLE_L 0% to 37% IO(MAX) (Note 7) 2.15 2.4 2.65 μs Notes: 6. The output constant-current design value, generally set to 110% to 120% of full load . 7. Guaranteed by design.
Document number: DS37448 Rev. 8 - 2 5 of 17 www.diodes.com October 2019 © Diodes Incorporated AP3783R Electrical Characteristics (@VCC=15V, TA=+25° C, unless otherwise specified.) (continued) Symbol Parameter Conditions Min Typ Max Unit OPERATING FREQUENCY SECTION (LL MODE) VCPC(EN) CPC Pin Voltage to Enter LL Mode — 18 20 22 mV VCPC(EX) CPC Pin Voltage to Exit LL Mode — 36 40 44 mV tOFF(EN) Off Time to Enter LL Mode From the end of tONS 230 256 282 μs tOFF(EX) Off Time to Exit LL Mode From the end of tONS 230 256 282 μs FREQUENCY JITTER ΔVCS/VCS VCS Modulation 6.5% to 100% IO(MAX) 4.5 5 5.5 % fMOD VCS Modulation Frequency 3.6 4 4.4 kHz CURRENT SENSE SECTION VCS_H Peak Current Sense Threshold Voltage 37% to 100% IO(MAX) 828 900 972 mV VCS_L 0% to 37% IO(MAX) 460 500 540 mV RLINE Built-in Line Compensation Resistor (Note 8) 245 260 275 tLEB Leading Edge Blanking (Note 7) 400 500 600 ns CONSTANT VOLTAGE SECTION VFB Feedback Threshold Voltage Closed loop test of VOUT 3.95 4.01 4.07 V RFB FB Pin Input Resistance VFB=4V 560 700 840 k VCABLE/VOUT% Cable Compensation Ratio AP3783RA 7 8 9 % AP3783RB 3 4 5 % AP3783RC 1 2 3 % CONSTANT CURRENT SECTION tONS/tSW Secondary Winding Conduction Duty VFB=4V 0.47 0.5 0.53 — VALLEY-ON SECTION tVAL-ON Valid Off Time of Valley-on From the end of tONS 14.4 16 17.6 μs DYNAMIC SECTION VTRIGGER Trigger Voltage for Dynamic Function — 70 85 100 mV tDELAY Delay Time for Dynamic Function From the end of tONS 105 135 165 μs VUV_H Under Voltage of FB Pin for VCS_H — 3.82 3.89 3.96 V tOFF(MAX) Maximum Off Time — 6 8 10 ms PROTECTION FUNCTION SECTION VFB(OVP) Over Voltage Protection at FB Pin — 7.1 7.5 7.9 V VCC(OVP) Over Voltage Protection at VCC Pin — 28 31 34 V tONP(MAX) Maximum Turn-on Time — 13 19 25 μs VFB(SCP) Short Circuit Protection VFB @ Hiccup 2.45 2.6 2.75 V tSCP Maximum Time under VFB(SCP) — 115 128 141 ms TOTP Shutdown Temperature — +126 +140 +154 ºC THYS Temperature Hysteresis — +36 +40 +44 ºC Notes: 7. Guaranteed by design. 8. Line compensation voltage on CS reference: AUX LINEFB LINE REFCS VRR RV _ 438.0Δ
Document number: DS37448 Rev. 8 - 2 6 of 17 www.diodes.com October 2019 © Diodes Incorporated AP3783R Performance Characteristics -40 -20 0 20 40 60 80 100 120 140 13.5 14.0 14.5 15.0 15.5 16.0 16.5 17.0 Ambient Temperature ( o Start-up Voltage (V) -40 -20 0 20 40 60 80 100 120 140 Ambient Temperature ( o Minimun Operating Voltage (V) Start-up Voltage vs. Ambient Temperature Start-up Current vs. Ambient Temperature Minimal Operating Voltage vs. Ambient Temperature Operating Current vs. Ambient Temperature High Source Current vs. Ambient Temperature Sink Resistance vs. Ambient Temperature -40 -20 0 20 40 60 80 100 120 140 Ambient Temperature ( o Sink Resistance () -40 -20 0 20 40 60 80 100 120 140 100 120 140 High Source Current (mA) Ambient Temperature ( o -40 -20 0 20 40 60 80 100 120 140 0.0 0.2 0.4 0.6 0.8 1.0 Start-up Current (mA) Ambient Temperature ( o -40 -20 0 20 40 60 80 100 120 140 200 300 400 500 600 700 Ambient Temperature ( o Operating Current (mA)
Document number: DS37448 Rev. 8 - 2 7 of 17 www.diodes.com October 2019 © Diodes Incorporated AP3783R Performance Characteristics (continued) -40 -20 0 20 40 60 80 100 120 140 2.5 3.0 3.5 4.0 4.5 5.0 Ambient Temperature ( o Feedback Voltage (V) Feedback Voltage vs. Ambient Temperature Gate Voltage vs. Ambient Temperature Line Compensation Resistance vs. Ambient Temperature Input Resistance of FB Pin vs. Ambient Temperature -40 -20 0 20 40 60 80 100 120 140 Ambient Temperature ( o Gate Voltage (V) -40 -20 0 20 40 60 80 100 120 140 100 200 300 400 500 Ambient Temperature ( o Line Compensation Resistance () -40 -20 0 20 40 60 80 100 120 140 500 600 700 800 900 1000 1100 1200 Ambient Temperature ( o Input Resistance of FB Pin (k)
Document number: DS37448 Rev. 8 - 2 9 of 17 www.diodes.com October 2019 © Diodes Incorporated AP3783R Operation Principle Description (continued) Figure 2 shows the typical waveforms which demonstrate the basic operating principle of AP3783R application. And the parameters are defined as following. IP---The primary side current IS ---The secondary side current IPK---Peak value of primary side current IPKS---Peak value of secondary side current VSEC---The transient voltage at secondary winding VO---The output voltage VAUX---The transient voltage at auxiliary winding VA--- The stable voltage at auxiliary winding when rectification diode is in conducting status, which equals the sum of voltage VCC and the forward voltage drop of auxiliary diode tSW ---The period of switching frequency tONP ---The conduction time when primary side switch is “ON” tONS ---The conduction time when secondary side diode is “ON” tOFF ---The dead time when neither primary side switch nor secondary side diode is “ON” tOFFS --- The time when secondary side diode is “OFF” For primary-side regulation, the primary current ip(t) is sensed by a current sense resistor RCS (as shown in Figure 1).The current rises up linearly at a rate of: ML t dt tdip )(V)( IN (1) As illustrated in Figure 2, when the current ip(t) rises up to IPK, the switch Q1 turns off. The constant peak current is given by: CS CS PK R VI (2) The energy stored in the magnetizing inductance LM each cycle is therefore: PKM ILEg (3) So the power transferring from the input to the output is given by: SWPKM fILP (4) Where, the fSW is the switching frequency. When the peak current IPK is constant, the output power depends on the switching frequency fSW. Constant Voltage Operation As for constant-voltage (CV) operation mode, the AP3783R detects the auxiliary winding voltage at FB pin t o regulate the output voltage. The auxiliary winding voltage is coupled with secondary side winding voltage, so the auxiliary winding voltage at tONS is: VdVoN NV S AUX AUX (5) Where Vd is the conduction voltage drop of MOSFET in APR3415.
Figure 3. Auxiliary Voltage Waveform CV loop control function of AP3783R then generates a tOFF to regulate the output voltage. The AP3783R can work in constant-current (CC) mode. Figure 2 shows the secondary current waveforms. Therefore, the AP3783R can realize CC mode operation by constant primary peak current and fixed diode conduction duty cycle. issue since switching frequency decreases to audio frequency range, about less than 20kHz. light load and LL Mode. At constant current mode, the current sense threshold voltage is always VCS_H.
Figure 4. Multiple Segment Peak Current at CV Mode whole heavy load and most of light load to guarantee the audible noise free performance. provide one energy pulse to output terminal and primary VCC. mode and also can effectively improve dynamic performance for primary side regulation power system. The conditions of entering LL mode---VCPC<20mV and tOFF>256μs. The condition of exiting LL mode---VCPC ≥40mV or tOFF<256μs. The critical point of the LL mode is generally about 5% IO(MAX). before gate voltage gets to miller platform. The AP3783R uses 3-segment drive current for radiative EMI suppression, as shown in Figure 5. gets to 10V, the drive current will decrease gradually to 0mA until the gate voltage goes up to the clamp voltage (11V).
Figure 5. Drive Current and Gate Voltage built in. During this blanking time, the current sense comparator is disabled and the external power switch cannot be turned off. increased by decreasing the resistance of the upper FB resistor. Cable compensation is fixed in AP3783R. spike current and then result in the better radiative EMI performance. active frequency jitter can be realized. for the output short condition or the output voltage below a certain level, the SCP mode will be triggered.
Document number: DS37448 Rev. 8 - 2 14 of 17 www.diodes.com October 2019 © Diodes Incorporated AP3783R
Ordering Information
TR : Tape & ReelK6 : SOT26 G1 : RoHS Compliant and Green Product Name RoHS/GreenCable Compensation Voltage A: 8% B: 4% C: 2% Product Package Temperature Range Cable Compensation Voltage Part Number Marking ID Packing AP3783R SOT26 -40 to +85C 8% AP3783RAK6TR-G1 GNT 3000/Tape & Reel 4% AP3783RBK6TR-G1 GNW 3000/Tape & Reel 2% AP3783RCK6TR-G1 GPT 3000/Tape & Reel Marking Information (Top View) : Logo XXX: Marking ID XXX
Document number: DS37448 Rev. 8 - 2 15 of 17 www.diodes.com October 2019 © Diodes Incorporated AP3783R Package Outline Dimensions (All dimensions in mm(inch).) Please see http://www.diodes.com/package-outlines.html for the latest version. (1) Package Type: SOT26 2.820(0.111) 3.100(0.122) 2.650(0.104) 3.000(0.118) 1.500(0.059) 1.700(0.067) 0.950(0.037)TYP 1.800(0.071) 2.000(0.079) 0.300(0.012) 0.500(0.020) 0.700(0.028)REF 0.100(0.004) 0.200(0.008) 0.200(0.008) 0.300(0.012) 0.600(0.024) 0.000(0.000) 0.150(0.006) 0.900(0.035) 1.300(0.051) 1.450(0.057) MAX 1 2 3 456 Pin 1 Mark
Document number: DS37448 Rev. 8 - 2 16 of 17 www.diodes.com October 2019 © Diodes Incorporated AP3783R Suggested Pad Layout Please see http://www.diodes.com/package-outlines.html for the latest version. (1) Package Type: SOT26 E E G Z Y X Dimensions Z (mm)/(inch) G (mm)/(inch) X (mm)/(inch) Y (mm)/(inch) E (mm)/(inch)
Document number: DS37448 Rev. 8 - 2 17 of 17 www.diodes.com October 2019 © Diodes Incorporated AP3783R IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRES S 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 lia bility 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 prod ucts 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 unauthorized 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, international o r 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 systems 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 devic es 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 pr ovided by Diodes Incorporated. Further, Cu stomers 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 © 2019, Diodes Incorporated www.diodes.com