AP2001 DIODES | Alldatasheet

Document overview

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Technical content

MONOLITHIC DUAL CHANNEL PWM CONTROLLER AP2001 Rev. 2 1 of 8 DECEMBER 2006 www.diodes.com © Diodes Incorporated Lead-free

  • Dual PWM control circuitry
  • Operating voltage can be up to 40V
  • 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) 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 V CC situation, the UVLO makes sure that the outputs are off until the internal circuit is operating normally.
  • Backlight inverter
  • DC/DC converts in computers, etc.

Ordering Information

S: SOP-16L - U : Tube - 13 : Taping Lead Free L : Lead Free Package (Note 2) Tube 13” Tape and Reel Device Package Code Packaging (Note 2) Quantity Part Number Suffix Quantity Part Number Suffix AP2001S S SOP-16L 50 -U 2500/Tape & Reel -13 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 Features General Description

Applications

MONOLITHIC DUAL CHANNEL PWM CONTROLLER AP2001 Rev. 2 2 of 8 DECEMBER 2006 www.diodes.com © Diodes Incorporated 16CT EA2+ EA2- FB2 DTC2 OUT2 VCCGND OUT1 DTC1 FB1 EA1+ RT REF SCP EA1- ( Top View ) SOP-16L Pin Descriptions Name Description CT Timing Capacitor RT Timing Resistor EA+ Error Amplifier Input(+) EA - Error Amplifier Input(-) FB Feedback Loop Compensation DTC Dead Time Control OUT Pre-driver Output GND Ground VCC Supply Voltage SCP Short Circuit Protection REF Voltage Reference Pin Assignments

MONOLITHIC DUAL CHANNEL PWM CONTROLLER AP2001 Rev. 2 3 of 8 DECEMBER 2006 www.diodes.com © Diodes Incorporated Block Diagram Bandgap Reference DTC2 REF OUT1 OUT2 PWM Amplifier 2 PWM Amplifier 1 EA1 + EA1 - VCC Oscillator RTSCP CT DTC1 Error Amplifier 1 FB1 EA2+ EA2 - Error Amplifier 2 FB2 R S VREF UVLO R MAX.500KHz GND 170K 1.18V Absolute Maximum Ratings Symbol Parameter Rating Unit VCC Supply Voltage 40 V VI Amplifier Input Voltage 20 V VO Collector Output Voltage 40 V Io Collector Output Current 21 mA TOP Operating Temperature Range -20 to +85 oC TST Storage Temperature Range -65 to +150 oC TLEAD Lead Temperature 1.6 mm (1/16 inch) from Case for 5 Seconds 245 oC

MONOLITHIC DUAL CHANNEL PWM CONTROLLER AP2001 Rev. 2 4 of 8 DECEMBER 2006 www.diodes.com © Diodes Incorporated Recommended Operating Conditions Symbol Parameter Min. Max. Unit VCC Supply Voltage 3.6 40 V VI Amplifier Input Voltage 1.05 1.45 V VO Collector Output Voltage 40 V IO Collector Output Current 20 mA IFB Current into Feedback Terminal 45 µA RF Feedback Resistor 100 k Ω CT Timing Capacitor 150 15000 pF RT Timing Resistor 5.1 100 k Ω FOSC Oscillator Frequency 1 500 KHz TOP Operating Free-air Temperature -20 85 ºC Electrical Characteristics (TA = 25ºC, VCC = 6V, f = 200 KHz) Reference (REF) Symbol Parameter Conditions Min. Typ. Max. Unit Output Voltage (pin 16) I O = 1mA 2.4 2.5 2.6 V TA = -20ºC ~ 25ºC -0.1 ±1 % VO Output Voltage Change with Temperature TA = 25ºC ~ 85ºC -0.2 ±1 % VDLI Input Stability V CC = 3.6V ~ 40V 2 12.5 mV VDLO Output Stability I O = 0.1 mA ~ 1mA 1 7.5 mV IO Short-circuit Output Current V O = 0 3 10 30 mA Under voltage lockout (UVLO) Symbol Parameter Conditions Min. Typ. Max. Unit VUT Upper Threshold Voltage (V CC) 2.65 V VLWT Lower Threshold Voltage (V CC) 2.45 V VHT Hysteresis (V CC) IO(REF) = 0.1mA TA = 25ºC 80 200 mV

MONOLITHIC DUAL CHANNEL PWM CONTROLLER AP2001 Rev. 2 5 of 8 DECEMBER 2006 www.diodes.com © Diodes Incorporated Electrical Characteristics ( Continued ) Short-circuit protection (SCP) control Symbol Parameter Conditions Min. Typ. Max. Unit VIT Input Threshold Voltage T A = 25ºC 0.65 0.7 0.75 V VSTB Standby Voltage No pull up 140 185 230 mV VLT Latched Input Voltage No pull up 60 120 mV ISCP Input (Source) Current V I = 0.7V, TA = 25ºC -10 -15 -20 µA VCT Comparator Threshold Voltage (FB) 1.18 V Oscillator (OSC) Symbol Parameter Conditions Min. Typ. Max. Unit FOSC Frequency C T = 330 pF, RT = 10 KΩ 200 KHz Standard Deviation of Frequency C T = 330 pF, RT = 10 KΩ 10 Frequency Change with Voltage V CC = 3.6V ~ 40V 1 TA = -20ºC ~ 25ºC -0.4 ± 2 ∆FOSC Frequency Change with Temperature TA = 25ºC ~ 85ºC -0.2 ± 2 Dead-time control (DTC) Symbol Parameter Conditions Min. Typ. Max. Unit IBDT Input Bias Current 1 IDT Latch Mode (Source) Current T A = 25ºC -80 -145 µA VDT Latched Input Voltage I O = 40µA 2.3 VT0 Zero duty cycle 2.05 2.25 VT100 Input Threshold Voltage at f= 10 KHz Maximum duty cycle 1.2 1.45 V Error-amplifier Symbol Parameter Conditions Min. Typ. Max. Unit VIO Input Offset Voltage V O (FB) = 1.25V ±6 mV IIO Input Offset Current V O (FB) = 1.25V ±100 nA IIB Input Bias Current V O (FB) = 1.25V 160 500 nA 1.05 to VCM Common-mode Input Voltage Range VCC = 3.6V ~ 40V 1.45 V AV Open-loop Voltage Amplification RF = 200 KΩ 70 80 dB GBW Unity-gain Bandwidth 1.5 MHz CMRR Common-mode Rejection Ratio 60 80 dB VOH Max. Output Voltage V ref-0.1 V VOL Min. Output Voltage 1 V IOI Output (Sink) Current (FB) V ID = -0.1V, VO = 1.25V 0.5 1.6 mA IOO Output (Source) Current (FB) V ID = 0.1V, VO = 1.25V -45 -70 µA

MONOLITHIC DUAL CHANNEL PWM CONTROLLER AP2001 Rev. 2 6 of 8 DECEMBER 2006 www.diodes.com © Diodes Incorporated Electrical Characteristics ( Continued ) Output section Symbol Parameter Conditions Min. Typ. Max. Unit ILEAK Leakage Current V O = 40V 10 µA VSAT Output Saturation Voltage I O = 10 mA 1.2 2 V ISC Short-circuit Output Current V O = 6V 90 mA PWM comparator Symbol Parameter Conditions Min. Typ. Max. Unit VT0 Zero duty cycle 2.05 2.25 V VT100 Input Threshold Voltage at f = 10 KHz (FB) Maximum duty cycle 1.2 1.45 V Total device Symbol Parameter Conditions Min. Typ. Max. Unit ICCS Standby Supply Current Off-state 2.5 3.0 mA ICCA Average Supply Current R T = 10 KΩ 2.8 3.5 mA Typical Application Circuit AP2001 12345678 16 15 14 13 12 11 10 9 C5 R5 33k 33k 500 pF 470 470 470 220 1uF L2 Buck Output Vref 33k 500pF R133k 50k0.47uF VCC 200k 470 33k 22k 330pF 150 L1 Boost Output Note: Values for R1 through R7 , C1 through C4 , and L1 and L2 depend upon individual application. Dual output DC/DC converter

MONOLITHIC DUAL CHANNEL PWM CONTROLLER AP2001 Rev. 2 7 of 8 DECEMBER 2006 www.diodes.com © Diodes Incorporated Marking Information (1) SOP-16L ( Top View ) SOP-16L AP2001 YY WW X X Logo ID code Year: "01" = 2001 "02" = 2002 Xth week: 01~52 Part No. L: Lead Free Package

MONOLITHIC DUAL CHANNEL PWM CONTROLLER AP2001 Rev. 2 8 of 8 DECEMBER 2006 www.diodes.com © Diodes Incorporated

Package Information

(1) Package Type: SOP-16L IMPORTANT NOTICE LIFE SUPPORT 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. 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.