AP2001 ANACHIP | Alldatasheet
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Monolithic Dual Channel PWM Controller This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. Rev. 0.3 Feb 20, 2004 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) - 2.5V voltage reference Output - 16-pin PDIP and SOP packages Applications - Backlight inverter - DC/DC converts in computers, etc. General Description The AP2001 integrates Pulse-width-Modulation (PWM) control circuit into a single chip, mainly designs for power-supply regulator. All the functions included 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 operational normally. Pin Assignments 16CT EA2+ EA2- FB2 DTC2 OUT2 VCCGND OUT1 DTC1 FB1 EA1+ RT REF SCP EA1- ( Top View ) PDIP/SOP 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
Monolithic Dual Channel PWM Controller Anachip Corp. Ordering Information AP2001 X X X Package Packing N: PDIP-16L S: SOP-16L Blank: Tube A : Taping Lead Free Blank : Normal L : Lead Free Package 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
Monolithic Dual Channel PWM Controller Anachip Corp. 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 10 seconds 260 oC Recommended Operating Conditions Symbol Parameter Min. Max. Unit VCC Supply voltage 3.6 40 V VI Amplifier input volt age 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
Monolithic Dual Channel PWM Controller Anachip Corp. 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 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 CT =330 pF, RT = 10 kΩ 200 Khz Standard deviation of frequency CT =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
Monolithic Dual Channel PWM Controller Anachip Corp. Electrical Characteristics (Continued) 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 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
Monolithic Dual Channel PWM Controller Anachip Corp. 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 Marking Information ( Top View ) PDIP/SOP AC AP2001 YY WW X X Logo ID code Year: "01" = 2001 "02" = 2002 Xth week: 01~52 Part No. Blank: normal L: Lead Free Package
Monolithic Dual Channel PWM Controller Anachip Corp. Package Information (1) Package Type: SOP-16L E H VIEW "A" L θ 0.015x45o C 7o(4X) VIEW "A" A D Be 7o(4X) y A1 0.10 - 0.25 0.040 - 0.010 Θ 0 - 8 0 - 8
Monolithic Dual Channel PWM Controller Anachip Corp. Package Information (Continued) (2) Package Type: PDIP-16L D 7O (4X) AL B2 B B1 e 15O (4X) eB C DETAIL A E 0.005 R0.005 eB DETAIL A TOP E-PIN INDENT 0.079 inch BOTTOM 3-PIN INDENT 0.118 inch E 7.62 - 8.26 0.3000 - 0.325 L 2.92 - 3.81 0.115 - 0.150 eB 8.38 - 9.40 0.330 - 0.370