AP2001_06

AP2001 MONOLITHIC DUAL CHANNEL PWM CONTROLLER Features • • • • • • • • • Dual PWM control circuitry Operating voltage can be up to 50V Adjustable Dead Time Control (DTC) Under Voltage Lockout (UVLO) protection Short Circuit Protection (SCP) Variable oscillator frequency: 500KHz Max 2.5V voltage reference output SOP-16L package Lead Free Finish/RoHS Compliant for Lead Free products (Note 1) General Description The AP2001 integrates Pulse-width-Modulation (PWM) control circuit into a single chip, mainly designed for power-supply regulator. All the functions included are an on-chip 2.5V reference output, two error amplifiers, an adjustable oscillator, two dead-time comparators, UVLO, SCP, DTC circuitry, and dual common-emitter (CE) output transistor circuit. Recommend the output CE transistors as pre-driver for Driving externally. The DTC can provide from 0% to 100%. Switching frequency can be adjustable by trimming RT and CT. During low VCC situation, the UVLO makes sure that the outputs are off until the internal circuit is operating normally. Applications • • Backlight inverter DC/DC converts in computers, etc. Ordering Information AP 2001 X X X Package S : SOP-16L Lead Free L : Lead Free Package (Note 2) Packing - U : Tube - 13 : Taping Note: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. Device Lead-free Tube Package Packaging Part Number Code (Note 2) Quantity Suffix S SOP-16L 50 -U 13” Tape and Reel Quantity 2500/Tape & Reel Part Number Suffix -13 AP2001S Note: 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. AP2001 Rev. 1 1 of 8 www.diodes.com NOVEMBER 2006 © Diodes Incorporated AP2001 MONOLITHIC DUAL CHANNEL PWM CONTROLLER Pin Assignments ( Top View ) CT RT EA1+ EA1FB1 DTC 1 O UT1 GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 R EF SC P EA2+ EA2FB2 DTC 2 O UT2 VCC SO P-16L Pin Descriptions Name CT RT EA+ EA FB DTC OUT GND VCC SCP REF Description Timing Capacitor Timing Resistor Error Amplifier Input(+) Error Amplifier Input(-) Feedback Loop Compensation Dead Time Control Pre-driver Output Ground Supply Voltage Short Circuit Protection Voltage Reference AP2001 Rev. 1 2 of 8 www.diodes.com NOVEMBER 2006 © Diodes Incorporated AP2001 MONOLITHIC DUAL CHANNEL PWM CONTROLLER Block Diagram VCC SCP RT CT DTC1 REF Bandgap Reference Oscillator MAX.500KHz EA1 + EA1 VREF Error Amplifier 1 170K FB1 1.18V EA2+ EA2 Error Amplifier 2 + + R S UVLO R + + PWM Amplifier 1 OUT1 + + PWM Amplifier 2 OUT2 FB2 GND DTC2 Absolute Maximum Ratings Symbol VCC VI VO Io TOP TST TLEAD Supply Voltage Amplifier Input Voltage Collector Output Voltage Collector Output Current Operating Temperature Range Storage Temperature Range Lead Temperature 1.6 mm (1/16 inch) from Case for 5 Seconds Parameter Rating 40 20 40 21 -20 to +85 -65 to +150 245 Unit V V V mA o o o C C C AP2001 Rev. 1 3 of 8 www.diodes.com NOVEMBER 2006 © Diodes Incorporated AP2001 MONOLITHIC DUAL CHANNEL PWM CONTROLLER Recommended Operating Conditions Symbol VCC VI VO IO IFB RF CT RT FOSC TOP Parameter Supply Voltage Amplifier Input Voltage Collector Output Voltage Collector Output Current Current into Feedback Terminal Feedback Resistor Timing Capacitor Timing Resistor Oscillator Frequency Operating Free-air Temperature Min. 3.6 1.05 Max. 40 1.45 40 20 45 15000 100 500 85 Unit V V V mA µA kΩ pF kΩ KHz ºC 100 150 5.1 1 -20 Electrical Characteristics (TA = 25ºC, VCC = 6V, f = 200 KHz) Reference (REF) Symbol Parameter Output Voltage (pin 16) VO Output Voltage Change with Temperature VDLI Input Stability VDLO Output Stability IO Short-circuit Output Current Under voltage lockout (UVLO) Symbol Parameter VUT Upper Threshold Voltage (VCC) VLWT Lower Threshold Voltage (VCC) VHT Hysteresis (VCC) Conditions IO = 1mA TA = -20ºC ~ 25ºC TA = 25ºC ~ 85ºC VCC = 3.6V ~ 40V IO = 0.1 mA ~ 1mA VO = 0 Conditions IO(REF) = 0.1mA TA = 25ºC Min. 2.4 3 Min. Typ. 2.5 -0.1 -0.2 2 1 10 Typ. 2.65 2.45 200 Max. 2.6 ±1 ±1 12.5 7.5 30 Max. Unit V % % mV mV mA Unit V V mV 80 AP2001 Rev. 1 4 of 8 www.diodes.com NOVEMBER 2006 © Diodes Incorporated AP2001 MONOLITHIC DUAL CHANNEL PWM CONTROLLER Electrical Characteristics ( Continued ) Short-circuit protection (SCP) control Symbol Parameter Conditions VIT Input Threshold Voltage TA = 25ºC VSTB Standby Voltage No pull up VLT Latched Input Voltage No pull up ISCP Input (Source) Current VI = 0.7V, TA = 25ºC VCT Comparator Threshold Voltage (FB) Oscillator (OSC) Symbol Parameter Conditions FOSC Frequency CT = 330 pF, RT = 10 KΩ Standard Deviation of Frequency CT = 330 pF, RT = 10 KΩ Frequency Change with Voltage VCC = 3.6V ~ 40V ∆FOSC TA = -20ºC ~ 25ºC Frequency Change with Temperature TA = 25ºC ~ 85ºC Dead-time control (DTC) Symbol Parameter Conditions IBDT IDT VDT VT0 Input Bias Current Latch Mode (Source) Current Latched Input Voltage Input Threshold Voltage at f= 10 KHz TA = 25ºC IO = 40µA Zero duty cycle Maximum duty cycle Conditions VO (FB) = 1.25V VO (FB) = 1.25V VO (FB) = 1.25V 1.05 to 1.45 70 80 1.5 60 Vref-0.1 1 0.5 -45 1.6 -70 80 1.2 Min. -80 2.3 2.05 1.45 Typ. Max. ±6 ±100 500 Unit mV nA nA V dB MHz dB V V mA µA 2.25 V -145 Min. 0.65 140 -10 Typ. 0.7 185 60 -15 1.18 Typ. 200 10 1 -0.4 -0.2 Typ. Max. 0.75 230 120 -20 Unit V mV mV µA V Unit KHz % Min. Max. ±2 ±2 Max. 1 Min. Unit µA VT100 Error-amplifier Symbol VIO IIO IIB VCM AV GBW CMRR VOH VOL IOI IOO Parameter Input Offset Voltage Input Offset Current Input Bias Current 160 Common-mode Input Voltage VCC = 3.6V ~ 40V Range Open-loop Voltage RF = 200 KΩ Amplification Unity-gain Bandwidth Common-mode Rejection Ratio Max. Output Voltage Min. Output Voltage Output (Sink) Current (FB) VID = -0.1V, VO = 1.25V Output (Source) Current (FB) VID = 0.1V, VO = 1.25V AP2001 Rev. 1 5 of 8 www.diodes.com NOVEMBER 2006 © Diodes Incorporated AP2001 MONOLITHIC DUAL CHANNEL PWM CONTROLLER Electrical Characteristics ( Continued ) Output section Symbol ILEAK VSAT Parameter Leakage Current Output Saturation Voltage Conditions VO = 40V IO = 10 mA V O = 6V Conditions Min. 1.2 Min. 1.2 90 Typ. 2.05 1.45 Typ. 2.5 2.8 Max. 3.0 3.5 Max. 2.25 Min. Typ. Max. 10 2 Unit µA V mA Unit V V Unit mA mA ISC Short-circuit Output Current PWM comparator Symbol Parameter VT0 VT100 Total device Symbol ICCS ICCA Input Threshold Voltage at f = Zero duty cycle 10 KHz (FB) Maximum duty cycle Parameter Standby Supply Current Average Supply Current Conditions Off-state RT = 10 KΩ Typical Application Circuit VCC 200k 470 150 L1 0.47uF 50k 33k R1 R2 Boost Output 33k 330pF R3 C2 22k C1 500pF R4 33k V ref 16 15 14 13 12 11 10 9 Note: Values for R1 through R7 , C1 through C4 , and L1 and L2 depend upon individual application. AP2001 1 2 3 4 5 6 7 8 470 C5 R5 500 pF 470 220 1uF L2 R6 Buck Output 33k 33k 470 C4 R7 Dual output DC/DC converter AP2001 Rev. 1 6 of 8 www.diodes.com NOVEMBER 2006 © Diodes Incorporated AP2001 MONOLITHIC DUAL CHANNEL PWM CONTROLLER Marking Information (1) SOP-16L ( Top View ) 16 9 Logo Part No. AP2001 YY WW X X 1 8 ID code L: Lead Free Package Xth week: 01~52 Year: "01" = 2001 "02" = 2002 ~ SOP-16L AP2001 Rev. 1 7 of 8 www.diodes.com NOVEMBER 2006 © Diodes Incorporated AP2001 MONOLITHIC DUAL CHANNEL PWM CONTROLLER Package Information (1) Package Type: SOP-16L IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products 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 our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated. AP2001 Rev. 1 8 of 8 www.diodes.com NOVEMBER 2006 © Diodes Incorporated