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| APW38HC42A/3A/4A/5A CMOS Current-Mode PWM Voltage Controller Features * * * * * * * * * * * Ultralow start-up current (25A typical) Low operating current (2mA typical) Fast output rise/fall times : General Description The APW38HC4XA family are fixed frequency, high performance, current-mode PWM controller with 1.2 A drive current capability. Undervoltage lockout circuitry allows the APW38HC42A and APW38HC44A versions to start up at 14.5V and operate down to 9V, and the APW38HC43A and APW38HC45A versions start at 8.4V with operateion down to 7.6V. All versions operate up to 24V. The ultra low start-up current 25A (typical), and operating current 2mA (typical) have been designed to improve the converter efficiency. High output driving capability up to 1.2A ensures the fast switching to minimize the switching losses. The APW38HC4XA features a trimmed and temperature compensated oscillator discharge current and bandgap reference. APW38HC4XA is available in both 8-pin plastic DIP and SOP packages. -15ns rise/10ns fall High output drive (1.2A peak current) CMOS outputs with rail-to-rail swing Current-mode operation up to 1MHz Trimmed 5V bandgap reference Pin-to-pin compatible with MIC38HC4X Trimmed oscillator discharge current UVLO with hysteresis Low cross-conduction currents Applications * * * Current-mode , Off-line , Switched-mode Power Supplies Current-mode , DC-to-DC converters Various converters ( step-down, step-up, flyback , forward, and synchronous FET) Pin Description COMP FB ISNS RT/CT 1 2 3 4 8 7 6 5 VREF VDD OUT GND Ordering and Marking Information APW 38HC4XA Lead Free Code Handling Code Temp. Range Package Code Package Code J : DIP - 8 K : SOP-8 Temp. Range C : 0 to 70 C I : -40 to 85 C Handling Code TU : Tube TR : Tape & Reel Lead Free Code L : Lead Free Device Blank : Original Device X - 2/3/4/5 XXXXX - Date Code APW 384XA J : APW 38HC4XA XXXXX APW 38HC4XA X - 2/3/4/5 XXXXX - Date Code APW 384XA K : XXXXX ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 1 www.anpec.com.tw APW38HC42A/3A/4A/5A Selection Guide Duty Cycle 0~96% 0~50% Startup 8.4V Minimum Operating 7.6V APW38HC43A APW38HC45A Startup 14.5V Minimum Operating 9V APW38HC42A APW38HC44A Block Diagram VDD 5V Reference VREF UVLO RT/CT Oscillator OUT T Q FB 2.5V E. A. 2R R S Q R + + COMP GND ISNS Functional Pin Description Pin Name 1 2 3 4 5 6 7 8 Pin Number COMP FB ISNS RT/CT GND OUT VDD VREF Function Description Compensation: Connect external compensation network to modify the error amplifier output. Feedback (Input): Error amplifier input. Feedback is 2.5V at desired output voltage. Current Sense (Input): Current sense comparator input. Connect to current sensing resistor or current transformer. Timing Resistor/Timing Capacitor: Connect external RC network to select switching frequency. Ground: Combined analog and power ground. Power Output: Totem-pole output. Analog Supply (Input): Controller circuitry supply input. Return to analog ground (AGND). 5V Reference (Output): Connect external RC network. 2 www.anpec.com.tw Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 APW38HC42A/3A/4A/5A Absolute Maximum Ratings Symbol VDD VISNS VFB TJ TSTG TSDR VESD Supply Voltage Current Sense Voltage Feedback Voltage Junction Temperature Range Storage Temperature Soldering Temperature Minimum ESD Rating Parameter Rating 24 -0.3 to 5.5 -0.3 to 5.5 300 -65 to 150 300,10 Seconds 3 Unit V V V C C C kV Thermal Characteristics Symbol JA Parameter Thermal Resistance in Free Air DIP SOP Value 125 175 Unit C/W Electrical Characteristics VDD =15V, Note3 ; RT=9.09K; CT=3.3nF; -40oC TA 85oC; unless noted Symbol Parameter Test Conditions TA=25C, IO(Output Current)=1mA 12V VDD 18V, IO=5A 1mA IO 20mA Line, Load, Temp. 10Hz f 10kHz, TA = 25oC TA = 125 oC, 1000 hrs APW38HC4XA Min. Typ. Max. 4.90 5.00 1 6 0.2 50 5 -55 52 0.2 0.03 8.4 8.4 1.6 2.50 5.10 20 25 5.18 25 -120 55 1.0 9.0 9.5 Unit V mV mV mV/C V V mV mA kHz % %/C mA VP-P 2.58 V REFERENCE VOLTAGE VREF Reference Voltage REGline Line Regulation REGload Load Regulation Temp. Stability Total Output Variation Output Noise Voltage Long Term Stability ISC Output Short Circuit OSCILLATOR FOSC Initial Accuracy Voltage Stability Temp. Stability IDISCHG Clock Ramp Reset Current 4.82 -25 TA=25C, Note 4 12V VDD 18V TMIN TA TMAX TA=25C, VRT/CT=2V TA=TMIN to TMAX VRT/CT peak to peak VCOMP=2.5V 3 49 7.7 7.2 VOSC Amplitude ERROR AMPLIFIER Input Voltage Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 2.42 www.anpec.com.tw APW38HC42A/3A/4A/5A Electrical Characteristics (Cont.) VDD =15V, Note3 ; RT=9.09K; CT=3.3nF; -40oC TA 85oC; unless noted Symbol ERROR IFB AVOL BW Parameter Test Conditions VFB=5V 2 VO 4V 12 VDD 18V VFB=2.7V, VCOMP=1.1V VFB=2.3V, VCOMP=5V VFB=2.3V, RL=15k to GND VFB=2.7V, RL=15k to VREF Notes 1,2 VCOMP=5V, Note 1 12 VDD 18V, Note 1 VISNS=5V 60 0.7 60 2 -0.5 5 70 1.0 7 -1 5.4 0.01 3.0 1.0 70 120 Sourcing Current = 200mA Sinking Current = 200mA TA=25C, CL=1nF TA=25C, CL=1nF APW38HC42/4A 13.5 APW38HC43/5A 7.8 APW38HC42/4A 8.0 APW38HC43/5A 7.0 APW38HC42/3A APW38HC44/5A 94 46 6.3 4 15 10 14.5 8.4 9.0 7.6 96 50 0 30 25 2.0 150 150 4.0 30 20 15.5 9.0 10.0 8.2 APW38HC4XA Min. Typ. Max. 0.1 Unit A dB MHz dB mA mA V V V/V V dB A ns ns ns V V AMPLIFIER Input Bias Current Open Loop Gain Unity Gain Bandwidth PSRR Output Sink Current Output Source Current VOH Output Voltage (High) VOL Output Voltage (Low) CURRENT SENSE A Gain VTHM Maximum Threshold PSRR IISNS Input Bias Current TD Delay to Output OUTPUT RDS(ON) High R DS(ON) Low tR Rise Time tF Fall Time UNDERVOLTAGE LOCKOUT VDD(ST) Start Threshold VDD(MIN) Minimum Operating Voltage PULSE WIDTH MODULATOR DMAX DMIN Maximum Duty Cycle Minimum Duty Cycle 1.1 3.15 1.1 0.1 250 2.85 0.9 % % TOTAL STANDBY CURRENT VDD=13V, APW38HC42/4A VDD=7.5V, APW38HC43/5A IDD(OP) Operating Supply Current VFB =VISNS= 0V, CL=1nF Note 1 : Parameter measured at trip point of latch with VFB=0V. IDD(ST) Start-Up Current A mA Note 2 : Gain defined as : A= VCOMP , 0 Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 4 www.anpec.com.tw APW38HC42A/3A/4A/5A Typical Characteristics Oscillator Frequency Configuration 100 Output Dead Time vs. Oscillator Frequency 100 RT Resistance (k) Output Dead Time ( %) 20 F 0p 47 0p F 1n F 10nF 4.7nF 10 7n 4. F nF 10 10 1.8nF 8n 1. F 200pF 470pF 1nF 1 10 100 1000 1 10 100 1000 Oscillator Frequency (kHz) Oscillator Frequency (kHz) Oscillator Discharge Current vs. Temperature Oscillator Discharge Current (mA) 8.8 8.6 8.4 8.2 8.0 7.8 7.6 7.4 7.2 7.0 -60 -30 0 30 60 90 120 150 Current Sense Amplifier Threshold vs. Error Amplifier Output Current Sense AMP Threshold (V) 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 1 2 3 4 5 6 7 -50oC 25oC 125 oC 9.0 VDD = 15V VRTCT = 2V Temperature (C) Error Amplifier Output (V) Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 5 www.anpec.com.tw APW38HC42A/3A/4A/5A Typical Characteristics (Cont.) Short-Circuit Current of VREF vs. Temperature 100 30 25 Output Waveform VREF Short-Circuit Current (mA) 90 Output Voltage (V) 80 70 60 50 40 30 20 10 0 -60 -30 0 30 60 90 120 150 20 15 10 5 0 -5 -10 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 Temperature (C) Time (s) Open Loop test Circuit REF RT A 4.7K 2N 2222 V cc COM P 1K E rror A m p A djust 100K REF 0.1 F 0.1 F 1K ,1 W A P W 38H C 42A /3A /4A /5A V FB V cc IS E N S E R T/C T O U TP U T GND 5K ISENSE A djust O utput GND 4.7K CT Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 6 www.anpec.com.tw APW38HC42A/3A/4A/5A Packaging Information PDIP-8 pin ( Reference JEDEC Registration MS-001) D E1 1 E A L e2 e1 e3 A1 A2 1 E3 Dim A A1 A2 L e1 e2 e3 E E1 E3 L 1 Millimeters Min. 0.38 2.92 9.02 2.54BSC 0.36 1.14 7.62 BSC 8.26 6.10 2.92 0 7.11 10.92 3.81 15 0.240 0.115 0 0.56 1.78 0.014 0.045 Max. 5.33 3.68 10.16 Min. 0.015 0.115 0.355 Inches Max. 0.210 0.145 0.400 0.100BSC 0.022 0.070 0.300 BSC 0.325 0.280 0.430 0.150 15 Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 7 www.anpec.com.tw APW38HC42A/3A/4A/5A Package Information SOP- 8 pin ( Reference JEDEC Registration MS-012) 0.015X45 E H e e1 D e2 A1 A 1 L Inc hes 0.004max. Dim A A1 D E H L e1 e2 1 Mi ll imet er s Min . 1.3 5 0.1 0 4.8 0 3.8 0 5.8 0 0.4 0 0.3 3 1.2 7BS C 8 Ma x . 1.7 5 0.2 5 5.0 0 4.0 0 6.2 0 1.2 7 0.5 1 Min . 0.0 53 0.0 04 0.1 89 0.1 50 0.2 28 0.0 16 0.0 13 0.5 0BS C 8 Ma x . 0.0 69 0.0 10 0.1 97 0.1 57 0.2 44 0.0 50 0.0 20 Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 8 www.anpec.com.tw APW38HC42A/3A/4A/5A Physical Specifications Terminal Material Lead Solderability Solder-Plated Copper (Solder Material : 90/10 or 63/37 SnPb), 100%Sn Meets EIA Specification RSI86-91, ANSI/J-STD-002 Category 3. Reflow Condition TP (IR/Convection or VPR Reflow) tp C ritical Zone T L to T P R am p-up T e m p e ra tu re TL T sm ax tL T sm in R am p-down ts Preheat 25 t 25 C to Peak T im e Classificatin Reflow Profiles Profile Feature Sn-Pb Eutectic Assembly Large Body Small Body Pb-Free Assembly Large Body Small Body 3C/second max. 150C 200C 60-180 seconds 3C/second max 217C 60-150 seconds 245 +0/-5C 250 +0/-5C 10-30 seconds 20-40 seconds Average ramp-up rate 3C/second max. (TL to TP) Preheat - Temperature Min (Tsmin) 100C - Temperature Mix (Tsmax) 150C - Time (min to max)(ts) 60-120 seconds Tsmax to TL - Ramp-up Rate Tsmax to TL - Temperature(TL) 183C - Time (tL) 60-150 seconds Peak Temperature(Tp) 225 +0/-5C 240 +0/-5C Time within 5C of actual Peak 10-30 seconds 10-30 seconds Temperature(tp) Ramp-down Rate 6C/second max. 6 minutes max. Time 25C to Peak Temperature Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 9 6C/second max. 8 minutes max. www.anpec.com.tw Note: All temperatures refer to topside of the package. Measured on the body surface. APW38HC42A/3A/4A/5A Reliability test program Test item SOLDERABILITY HOLT PCT TST ESD Latch-Up Method MIL-STD-883D-2003 MIL-STD-883D-1005.7 JESD-22-B, A102 MIL-STD-883D-1011.9 MIL-STD-883D-3015.7 JESD 78 Description 245C , 5 SEC 1000 Hrs Bias @ 125 C 168 Hrs, 100 % RH , 121C -65C ~ 150C, 200 Cycles VHBM > 2KV, VMM > 200V 10ms , Itr > 100mA Carrier Tape & Reel Dimensions t P P1 D Po E F W Bo Ao Ko D1 T2 J C A B T1 Application SOP-8 Application SOP-8 A 3301 F B 62 1.5 D C 12.75 + 0.1 5 D1 J 2 + 0.5 Po T1 12.4 +0.2 P1 T2 2 0.2 Ao W 12 + 0.3 - 0.1 Bo 5.2 0.1 P 8 0.1 Ko E 1.75 0.1 t 5.5 0.1 1.550.1 1.5+ 0.25 4.0 0.1 2.0 0.1 6.4 0.1 2.1 0.1 0.30.013 (mm) Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 10 www.anpec.com.tw APW38HC42A/3A/4A/5A Cover Tape Dimensions Application SOP- 8 Carrier Width 12 Cover Tape Width 9.3 Devices Per Reel 2500 Customer Service Anpec Electronics Corp. Head Office : 5F, No. 2 Li-Hsin Road, SBIP, Hsin-Chu, Taiwan, R.O.C. Tel : 886-3-5642000 Fax : 886-3-5642050 Taipei Branch : 7F, No. 137, Lane 235, Pac Chiao Rd., Hsin Tien City, Taipei Hsien, Taiwan, R. O. C. Tel : 886-2-89191368 Fax : 886-2-89191369 Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 11 www.anpec.com.tw |
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