AP3581A DIODES | Alldatasheet
Document overview
- Manufacturer or author: Diodes Incorporated
- PDF pages: 13
Technical content
Features
Supply Voltage: 5V/12V VIN Input Range: 3.0V to 13.2V 0.6V/0.8V to 80% of VIN Output Range Internal Reference: 0.6V/0.8V Simple Single-Loop Control Voltage-Mode PWM Control Duty Cycle: 0% to 80% Fast Transient Response 10MHz High-Bandwidth Error Amplifier with 6V/μs Slew Rate Fixed Oscillator Frequency: 300kHz/200kHz Lossless, Programmable Over Current Protection (Uses Lower MOSFET RDS(ON) ) Start-Up into Pre-biased Output Built-In Thermal Shutdown Built-In Soft-Start Over Current/Voltage Protection Under Voltage Protection Integrated Boot Diode Pin Assignments (Top View) BOOT UGATE OPS LGATE PHASE COMP/EN FB VCC GND PSOP-8 (Top View)
Applications
Power Supplies for Microprocessors/Peripherals PCs, Embedded Controllers, Memory Supplies DSP and Core Communications Processor Supplies Subsystem Power Supplies PCI, AGP, Graphics Cards, Digital TV SSTL-2 and DDR/2/3 SDRAM Bus Termination Supply Cable Modems, Set Top Boxes, and DSL Modems Industrial Power Supplies and General Purpose Supplies 5V/12V Input DC-DC Regulators Low-Voltage Distributed Power Supplies
Document number: DS41552 Rev. 2 - 4 2 of 13 www.diodes.com November 2018 © Diodes Incorporated AP3581A/B/C PART OBSOLETE – NO ALTERNATE PART OBSOLETE – PART DISCONTINUED Typical Applications Circuit VCC BOOT UGATE LGATE PHASE OPS COMP/EN FB AP3581A/B/C Enable Disable 10k 5.1k/10k GND VIN=12V VOUT=1.2V 1.0μH 1000μF/6.3V 1000μF/6.3V 10k 10nF C5 1mF R4 2W 0.1mF 10μF/25V 220μF/25V Pin Descriptions Pin Number Pin Name Function
1 BOOT
Bootstrap pin. Connect a bootstrap capacitor (Typically from 0.1μF to 0.47μF) from this pin to PHASE pin to create a BOOT voltage suitable to drive a standard N -Channel MOSFET
2 UGATE
Upper-gate drive pin. Connect this pin to the upper MOSFET gate providing the gate drive. This pin is monitored by the adaptive shoot -through protection circuitry to determine when the upper MOSFET has been turned off 3 OPS Over-current setting pin. Connecting a resistor (ROCSET) between OPS and GND to set the over-current trigger point
4 LGATE
Lower-gate drive pin. Connect LGATE to the lower MOSFET gate providing the gate drive for the lower MOSFET. This pin is monitored by the adaptive shoot -through protection circuitry to determine when the lower MOSFET has turned off 5 VCC Bias supply pin. Provides a 5V or 12V bias supply for the chip from this pin. The pin should be bypassed with a capacitor to GND 6 FB Feedback pin. This pin is the inverting input of the internal error amplifier. Use FB pin, in combination with the COMP pin, to compensate the voltage control feedback loop of the converter. A resistor divider from output to GND is used to set the output voltage 7 COMP/EN Compensation and disable pin, this pin is the output of the error amplifier. Pull COMP pin low will shut down the IC
8 PHASE
PHASE pin. This pin connects to the source of the upper MOSFET and the drain of the lower MOSFET. This pin is also monitored by the adaptive shoot -through protection circuitry to determine when the upper MOSFET has turned off 9 GND Exposed pad as ground pin. Represents the signal and power ground for the IC. Tie this pin to the ground island/plane through the lowest impedance connection available
Document number: DS41552 Rev. 2 - 4 3 of 13 www.diodes.com November 2018 © Diodes Incorporated AP3581A/B/C PART OBSOLETE – NO ALTERNATE PART OBSOLETE – PART DISCONTINUED Functional Block Diagram OTP SOFT-START POWER-ON RESET (POR) INTERNAL REGULATOR 3.3V INT REFERENCE &BIAS 0.6V (AP3581A) OSCILLATOR PWM GATE CONTROL LOGIC ERROR AMPLIFIER PWM COMPARATOR VCC 0.3V ENABLE VREF OVP FB COMP/EN GND OPS LGATE PHASE UGATE BOOT VCC 0.8V (AP3581B/C)
Document number: DS41552 Rev. 2 - 4 4 of 13 www.diodes.com November 2018 © Diodes Incorporated AP3581A/B/C PART OBSOLETE – NO ALTERNATE PART OBSOLETE – PART DISCONTINUED Absolute Maximum Ratings (Note 1) Symbol Parameter Value Unit VCC Supply Voltage -0.3 to 15 V VBOOT BOOT Voltage -0.3 to VPHASE +15 V VUGATE Voltage from UGATE to PHASE -0.3 to 15 V VPHASE, VLGATE Voltage from PHASE, LGATE Pin to GND -1 to 15 V _ Voltage on Other Separate Pin -0.3 to 6 V θJA Thermal Resistance 50 ºC/W TJ Operating Junction Temperature -40 to +125 ºC TSTG Storage Temperature -65 to +150 ºC TLEAD Lead Temperature (Soldering, 10 sec) +260 ºC _ ESD (Human Body Model) (Note 2) 2000 V _ ESD (Machine Model) (Note 2) 200 V Notes: 1. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stres s ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Condi tions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability. 2. Devices are ESD sensitive. Handling precaution recommended. Recommended Operating Conditions Symbol Parameter Min Max Unit VCC Supply Input Voltage 4.5 13.2 V TJ Operating Junction Temperature Range -40 +125 C TA Operating Ambient Temperature -40 +85 C
Document number: DS41552 Rev. 2 - 4 5 of 13 www.diodes.com November 2018 © Diodes Incorporated AP3581A/B/C PART OBSOLETE – NO ALTERNATE PART OBSOLETE – PART DISCONTINUED Electrical Characteristics (VCC=12V, TA=+25℃, unless otherwise specified.) Symbol Parameter Conditions Min Typ Max Unit SUPPLY INPUT VCC Supply Voltage _ 4.5 _ 13.2 V ICC Supply Current UGATE and LGATE Pin Open; VCC=12V, Switching _ 5 _ mA ICC_Q Quiescent Supply Current VFB=VREF+0.1V, No Switching _ 4 _ mA VIN Power Input Voltage _ 3.0 _ 13.2 V POWER ON RESET VPOR VCC Rising Threshold VCC Rising 4.0 4.2 4.4 V VPOR_HYS VCC Threshold Hysteresis _ _ 500 _ mV OSCILLATOR fOSC Oscillator Frequency AP3581A/B 270 300 330 kHz AP3581C 180 200 220 ΔVOSC Ramp Amplitude VCC=12V _ 1.8 _ V ERROR AMPLIFIER GDC_OL Open Loop DC Gain (Note 3) _ 55 70 _ dB GBW Gain Bandwidth (Note 3) _ _ 10 _ MHz SR Slew Rate (Note 3) _ 3 6 _ V/μs _ Transconductance _ _ 800 1100 μA/V _ Output Source Current VFB<VREF 80 120 _ μA _ Output Sink Current VFB>VREF 80 120 _ μA PWM CONTROLLER GATE DRIVERS IUG_SRC Upper Gate Source Current VBOOT-VPHASE=12V, VBOOT-VUGATE=6V _ -1 _ A IUG_SNK Upper Gate Sink Current VBOOT-VPHASE=12V, VBOOT-VUGATE=6V _ 1.5 _ A RUGATE Upper Gate Sink Resistance 50mA Sink Current, VBOOT-VPHASE=12V _ 1.6 3.2 Ω ILG_SRC Lower Gate Source Current VCC-VLGATE=6V _ -1 _ A ILG_SNK Lower Gate Sink Current VLGATE=6V _ 1.5 _ A RLGATE Lower Gate Sink Resistance 50mA Sink Current, VCC=12V _ 1 2 Ω _ PHASE Falling to LGATE Rising Delay VPHASE<1.2V to VLGATE>1.2V _ 50 _ ns Note: 3. Not tested, guaranteed by design.
Document number: DS41552 Rev. 2 - 4 6 of 13 www.diodes.com November 2018 © Diodes Incorporated AP3581A/B/C PART OBSOLETE – NO ALTERNATE PART OBSOLETE – PART DISCONTINUED Electrical Characteristics (Cont.) Symbol Parameter Conditions Min Typ Max Unit _ LGATE Falling to UGATE Rising Delay VLGATE<1.2V to (VUGATE-VPHASE)>1.2V _ 50 _ ns _ Minimum Duty Cycle _ _ 0 _ % _ Maximum Duty Cycle _ 75 80 85 % REFERENCE VOLTAGE VFB Feedback Voltage AP3581A 0.591 0.6 0.609 V AP3581B/C 0.788 0.8 0.812 V PROTECTION VFB_UVP Under Voltage Protection _ 0.3 0.4 0.5 V IOPS Over Current Source _ 30 40 50 μA tSS Soft-start Interval AP3581A _ 2.0 _ ms AP3581B _ 2.7 _ AP3581C _ 3.6 _ VCOMP/EN Enable Threshold _ 0.25 0.30 0.35 V TOTSD Thermal Shutdown _ _ +160 _ ºC THYS Thermal Shutdown Hysteresis _ _ +20 _ ºC
Document number: DS41552 Rev. 2 - 4 7 of 13 www.diodes.com November 2018 © Diodes Incorporated AP3581A/B/C PART OBSOLETE – NO ALTERNATE PART OBSOLETE – PART DISCONTINUED -50 -25 0 25 50 75 100 125 150 240 250 260 270 280 290 300 310 320 330 340 350 360 For AP3581A Switching Frequency (kHz) Temperature ( o 4 5 6 7 8 9 10 11 12 13 14 240 250 260 270 280 290 300 310 320 330 340 350 360 Switching Frequency (kHz) Input Voltage (V) For AP3581A -50 -25 0 25 50 75 100 125 1500.50 0.52 0.54 0.56 0.58 0.60 0.62 0.64 0.66 0.68 0.70 Feedback Voltage (V) Temperature (C) For AP3581A 4 5 6 7 8 9 10 11 12 13 14 0.50 0.52 0.54 0.56 0.58 0.60 0.62 0.64 0.66 0.68 0.70 Feedback Voltage (V) Input Voltage (V) For AP3581A Performance Characteristics Line Regulation Load Regulation Switching Frequency vs. Temperature Switching Frequency vs. Input Voltage Feedback Voltage vs. Temperature Feedback Voltage vs. Input Voltage 4 5 6 7 8 9 10 11 12 13 14 -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 0.4 0.5 VOUT=1.2V，IOUT=5A Output Voltage Variation (%) Input Voltage (V) 0 2 4 6 8 10 12 14 16 18 20 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0.1 0.2 VIN=12V,VOUT=1.2V Output Voltage Variation (%) Output Current (A)
Document number: DS41552 Rev. 2 - 4 8 of 13 www.diodes.com November 2018 © Diodes Incorporated AP3581A/B/C PART OBSOLETE – NO ALTERNATE PART OBSOLETE – PART DISCONTINUED Performance Characteristics (Cont.) Power-on Waveform Power-off Waveform (VIN=12V, VOUT=1.2V, IOUT=0A) (VIN=12V, VOUT=1.2V, IOUT=20A) Enable Waveform Disable Waveform (VIN=12V, VOUT=1.2V, IOUT=0A) (VIN=12V, VOUT=1.2V, IOUT=20A) Load Transient Response Load Transient Response (VIN=12V, VOUT=1.2V, IOUT=0A to 10A) (VIN=12V, VOUT=1.2V, IOUT=0A to 20A) VIN 10V/div VOUT 0.5V/div VCOMP 0.5V/div VLGATE 10V/div Time 1ms/div VIN 10V/div VOUT 0.5V/div VPHASE 10V/div IL 10A/divv Time 200ms/div VIN 10V/div VOUT 0.5V/div VCOMP 0.5V/div IL 10A/div Time 1ms/div VPHASE 10V/div VOUT 0.5V/div VCOMP 0.5V/div IL 10A/div Time 20ms/div VPHASE 5V/div VOUT_AC 200mV/div IOUT 5A/div Time 10ms/div VPHASE 5V/div VOUT_AC 200mV/div IOUT 10A/div Time 10ms/div
Document number: DS41552 Rev. 2 - 4 9 of 13 www.diodes.com November 2018 © Diodes Incorporated AP3581A/B/C PART OBSOLETE – NO ALTERNATE PART OBSOLETE – PART DISCONTINUED Performance Characteristics (Cont.) UGATE Turn Off Waveforms UGATE Turn On Waveforms (VCC=VIN=12V, VOUT=1.2V, IOUT=20A) (VCC=VIN=12V, VOUT=1.2V, IOUT=20A) Over Current Protection Over Voltage Protection (VIN=12V, VOUT=1.2V to 0V, IOUT=0A) (VIN=12V, VOUT=1.2V, IOUT=20A) VUGATE-PHASE 2V/div VPHASE 2V/div VLGATE 2V/div Time 40ns/div VUGATE-PHASE 2V/div VLGATE 2V/div VPHASE 2V/div Time 40ns/div VOUT 1V/div VCOMP 0.5V/div VPHASE 10V/div IL 10A/div Time 10ms/div VFB 1V/div VLGATE 10V/div VUGATE 20V/div IL 10A/div Time 80ms/div
Document number: DS41552 Rev. 2 - 4 10 of 13 www.diodes.com November 2018 © Diodes Incorporated AP3581A/B/C PART OBSOLETE – NO ALTERNATE PART OBSOLETE – PART DISCONTINUED
Ordering Information
PackingPackageProduct Name TR : Tape & Reel MP : PSOP-8 RoHS/Green Blank : TubeA : AP3581A B : AP3581B C : AP3581C G1:RoHS Compliant and Green Package Temperature Range Part Number Marking ID Packing Type PSOP-8 -40 to +85° C AP3581AMP-G1 3581AMP-G1 Tube AP3581AMPTR-G1 3581AMP-G1 Tape and Reel AP3581BMP-G1 3581BMP-G1 Tube AP3581BMPTR-G1 3581BMP-G1 Tape and Reel AP3581CMP-G1 3581CMP-G1 Tube AP3581CMPTR-G1 3581CMP-G1 Tape and Reel
Document number: DS41552 Rev. 2 - 4 11 of 13 www.diodes.com November 2018 © Diodes Incorporated AP3581A/B/C PART OBSOLETE – NO ALTERNATE PART OBSOLETE – PART DISCONTINUED Package Outline Dimensions (All dimensions in mm(inch).) (1) Package Type: PSOP-8 5.800(0.228) 6.200(0.244) 1.270(0.050) 0.400(0.016) 3.800(0.150) 4.000(0.157) 0.330(0.013) 0.150(0.006) 1.350(0.053) 1.750(0.069) TYP 0.250(0.010) 0.170(0.007) 1.350(0.053) 1.550(0.061) 2.313(0.091) 2.513(0.099) 3.202(0.126) 3.402(0.134) 5.100(0.201) Note: Eject hole, oriented hole and mold mark is optional.
Document number: DS41552 Rev. 2 - 4 12 of 13 www.diodes.com November 2018 © Diodes Incorporated AP3581A/B/C PART OBSOLETE – NO ALTERNATE PART OBSOLETE – PART DISCONTINUED Suggested Pad Layout (1) Package Type: PSOP-8 G E X Y Y1 Z Dimensions Z (mm)/(inch) G (mm)/(inch) X (mm)/(inch) Y (mm)/(inch) Dimensions X1 (mm)/(inch) (mm)/(inch) E (mm)/(inch) ---
Document number: DS41552 Rev. 2 - 4 13 of 13 www.diodes.com November 2018 © Diodes Incorporated AP3581A/B/C PART OBSOLETE – NO ALTERNATE PART 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 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, 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 provided 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 © 2018, Diodes Incorporated www.diodes.com