APW38HC42A/3A/4A/5A CMOS Current-Mode PWM Voltage Controller Features • • • General Description Ultralow start-up current (25µA typical) 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 25µA (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. Low operating current (2mA typical) Fast output rise/fall times : −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 Pin Description Applications • Current-mode , Off-line , Switched-mode Power Supplies • • COMP 1 8 VREF FB 2 7 VDD ISNS 3 6 OUT RT/CT 4 5 GND Current-mode , DC-to-DC converters Various converters ( step-down, step-up, flyback , forward, and synchronous FET) Ordering and Marking Information 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 APW 38HC4XA Lead Free Code Handling Code Temp. Range Package Code APW 384XA J : X - 2/3/4/5 APW 38HC4XA XXXXX XXXXX - Date Code 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 Startup 8.4V Minimum Operating 7.6V APW38HC43A APW38HC45A Duty Cycle 0~96% 0~50% Startup 14.5V Minimum Operating 9V APW38HC42A APW38HC44A Block Diagram VDD VREF 5V Reference RT/CT Oscillator UVLO OUT T - FB 2R E. A. 2.5V Q - + S Q R R + COMP GND ISNS Functional Pin Description Pin Name Pin Number Function Description 1 COMP 2 FB 3 ISNS 4 RT/CT 5 6 7 GND OUT VDD 8 VREF 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. Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 2 www.anpec.com.tw APW38HC42A/3A/4A/5A Absolute Maximum Ratings Symbol Parameter Rating Unit 24 V VDD Supply Voltage VISNS Current Sense Voltage -0.3 to 5.5 V VFB Feedback Voltage -0.3 to 5.5 V TJ Junction Temperature Range 300 °C -65 to 150 °C TSTG Storage Temperature TSDR Soldering Temperature 300,10 Seconds °C VESD Minimum ESD Rating ±3 kV Thermal Characteristics Symbol θJA Parameter Thermal Resistance in Free Air DIP SOP Value Unit 125 175 °C/W Electrical Characteristics VDD =15V, Note3 ; RT=9.09KΩ; CT=3.3nF; -40oC ≤ TA ≤ 85oC; unless noted Symbol Parameter REFERENCE VOLTAGE V REF Reference Voltage REG line Line Regulation REG load Load Regulation Temp. Stability Total Output Variation Output Noise Voltage Long Term Stability ISC Output Short Circuit OSCILLATOR F OSC Initial Accuracy Voltage Stability Temp. Stability IDISCHG Clock Ramp Reset Current V OSC Amplitude ERROR AMPLIFIER Input Voltage Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 Test Conditions T A=25°C, IO (Output Current)=1mA 12V≤ V DD ≤ 18V, IO=5µA 1mA≤ IO ≤ 20mA Line, Load, Temp. 10Hz≤ f ≤10kHz, T A = 25oC T A = 125 oC, 1000 hrs APW38HC4XA Min. Typ. Max. 4.90 4.82 -25 T A=25°C, Note 4 12V≤ V DD ≤ 18V T MIN ≤ T A ≤ T MAX T A=25°C, V RT/CT=2V T A=T MIN to T MAX V RT/CT peak to peak V COMP=2.5V 49 7.7 7.2 2.42 3 5.00 1 6 0.2 50 5 -55 52 0.2 0.03 8.4 8.4 1.6 2.50 Unit 5.10 20 25 V mV mV 5.18 mV/°C V 25 -120 µV mV mA 55 1.0 kHz % %/°C 9.0 9.5 mA V P-P 2.58 V www.anpec.com.tw APW38HC42A/3A/4A/5A Electrical Characteristics (Cont.) VDD =15V, Note3 ; RT=9.09KΩ; CT=3.3nF; -40oC ≤ TA ≤ 85oC; unless noted Symbol Parameter ERROR IFB A VOL BW AMPLIFIER Input Bias Current Open Loop Gain Unity Gain Bandwidth PSRR Output Sink Current Output Source Current V OH Output Voltage (High) V OL Output Voltage (Low) CURRENT SENSE A Gain V THM Maximum Threshold PSRR IISNS Input Bias Current TD Delay to Output OUTPUT R DS(ON) High R DS(ON) Low tR Rise Time tF Fall Time UNDERVOLTAGE LOCKOUT Test Conditions APW38HC4XA Min. Typ. Max. V FB=5V 0.1 2≤ V O ≤ 4V 12≤ V DD ≤ 18V V FB=2.7V, V COMP =1.1V V FB=2.3V, V COMP =5V V FB=2.3V, R L =15k to GND V FB=2.7V, R L =15k to VREF Notes 1,2 V COMP=5V, Note 1 12≤ V DD ≤ 18V, Note 1 V ISNS =5V 60 0.7 60 2 -0.5 5 2.85 0.9 70 1.0 7 -1 5.4 0.01 3.0 1.0 70 120 1.1 V/V V dB 0.1 250 µA ns 6.3 Sinking Current = 200mA T A =25°C, C L=1nF T A =25°C, C L=1nF 4 15 10 30 20 APW38HC42/4A 13.5 APW38HC43/5A 7.8 APW38HC42/4A 8.0 APW38HC43/5A 7.0 14.5 8.4 9.0 7.6 15.5 9.0 10.0 8.2 APW38HC42/3A APW38HC44/5A 96 50 V DD(MIN) Minimum Operating Voltage µA dB MHz dB mA mA V V 3.15 1.1 Sourcing Current = 200mA V DD(ST) Start Threshold Unit Ω ns ns V V PULSE WIDTH MODULATOR D MAX Maximum Duty Cycle D MIN Minimum Duty Cycle 94 46 % 0 % 150 150 4.0 µA TOTAL STANDBY CURRENT V DD=13V, APW38HC42/4A V DD=7.5V, APW38HC43/5A IDD(OP) Operating Supply Current V FB =V ISNS= 0V, C L =1nF Note 1 : Parameter measured at trip point of latch with VFB=0V. IDD(ST) Start-Up Current 30 25 2.0 mA Note 2 : Gain defined as : A= ∆VCOMP , 0<VTH(ISNS)<0.8V ∆VTH(ISNS) Note 3 : Adjust VDD above the start threshold before setting at 15V. Note 4 : Output frequency equals oscillator frequency for the APW38HC42A and APW38HC43A. Output frequency for APW38HC44A and APW38HC45A equals one half of the oscillator frequency. Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 4 www.anpec.com.tw APW38HC42A/3A/4A/5A Typical Characteristics Output Dead Time vs. Oscillator Frequency Oscillator Frequency Configuration 100 Output Dead Time ( %) 20 F 0p 47 0p F 1n F 8n 1. 10 F 7n 4. F nF 10 RT Resistance (kΩ) 100 1 10nF 4.7nF 10 1.8nF 200pF 470pF 1nF 1 10 100 1000 10 100 Oscillator Frequency (kHz) Oscillator Frequency (kHz) Current Sense Amplifier Threshold vs. Error Amplifier Output 9.0 Current Sense AMP Threshold (V) Oscillator Discharge Current (mA) Oscillator Discharge Current vs. Temperature 8.8 8.6 8.4 8.2 8.0 7.8 7.6 7.4 VDD = 15V VRTCT = 2V 7.2 7.0 -60 -30 0 30 60 90 120 150 1.2 -50oC 25oC 1.0 125 oC 0.8 0.6 0.4 0.2 0.0 0 1 2 3 4 5 6 7 Error Amplifier Output (V) Temperature (°C) Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 1000 5 www.anpec.com.tw APW38HC42A/3A/4A/5A Typical Characteristics (Cont.) Output Waveform 100 30 90 25 80 Output Voltage (V) VREF Short-Circuit Current (mA) Short-Circuit Current of VREF vs. Temperature 70 60 50 40 30 20 15 10 5 0 20 -5 10 -10 0 -60 -30 0 30 60 90 120 0.0 150 0.1 0.2 0.3 Temperature (°C) 0.4 0.5 0.6 0.7 0.8 Time (µs) Open Loop test Circuit REF RT A 4.7K Ω COM P 1K Ω E rror A m p A djust V cc 2N 2222 100K Ω 5K Ω IS E N S E A djust 4.7K Ω REF A P W 38H C 42A /3A /4A /5A V FB V cc 0.1 µ F 0.1 µ F IS E N S E O U TP U T R T/C T GND 1K Ω , 1W O utput GND 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 E 1 A2 A 1 E3 A1 L e2 e1 e3 Dim A A1 A2 L e1 e2 e3 Millimeters Min. Max. 5.33 0.38 2.92 9.02 3.68 10.16 Min. 0.36 1.14 2.92 0° Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 0.145 0.400 0.100BSC 0.56 1.78 0.014 0.045 7.62 BSC 8.26 6.10 Max. 0.210 0.015 0.115 0.355 2.54BSC E E1 E3 L ∅1 Inches 0.022 0.070 0.300 BSC 0.325 7.11 10.92 3.81 15° 7 0.240 0.115 0° 0.280 0.430 0.150 15° www.anpec.com.tw APW38HC42A/3A/4A/5A Package Information SOP- 8 pin ( Reference JEDEC Registration MS-012) 0.015X45 ° E H e e1 e2 D A1 A L 0.004max. Dim A A1 D E H L e1 e2 ∅1 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 Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 Inc hes Ma x . 1.7 5 0.2 5 5.0 0 4.0 0 6.2 0 1.2 7 0.5 1 1.2 7BS C 8° Min . 0.0 53 0.0 04 0.1 89 0.1 50 0.2 28 0.0 16 0.0 13 Ma x . 0.0 69 0.0 10 0.1 97 0.1 57 0.2 44 0.0 50 0.0 20 0.5 0BS C 8° 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 (IR/Convection or VPR Reflow) tp TP C ritical Zone T L to T P T e m p e ra tu re R am p-up TL tL T sm ax 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 Average ramp-up rate 3°C/second max. (TL to TP) Preheat - Temperature Min (Tsmin) 100°C - Temperature Mix (Tsmax) 150°C - Time (min to max)(ts) 60-120 seconds Tsmax to TL - Ramp-up Rate Tsmax to TL - Temperature(TL) 183°C - Time (tL) 60-150 seconds Peak Temperature(Tp) 225 +0/-5°C 240 +0/-5°C Time within 5°C of actual Peak 10-30 seconds 10-30 seconds Temperature(tp) Ramp-down Rate 6°C/second max. 6 minutes max. Time 25°C to Peak Temperature Pb-Free Assembly Large Body Small Body 3°C/second max. 150°C 200°C 60-180 seconds 3°C/second max 217°C 60-150 seconds 245 +0/-5°C 250 +0/-5°C 10-30 seconds 20-40 seconds 6°C/second max. 8 minutes max. Note: All temperatures refer to topside of the package. Measured on the body surface. Copyright ANPEC Electronics Corp. Rev. A.7 - Jan., 2003 9 www.anpec.com.tw 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 245°C , 5 SEC 1000 Hrs Bias @ 125 °C 168 Hrs, 100 % RH , 121°C -65°C ~ 150°C, 200 Cycles VHBM > 2KV, VMM > 200V 10ms , Itr > 100mA Carrier Tape & Reel Dimensions t D P Po E P1 Bo F W Ko Ao D1 T2 J C A B T1 Application A B C J T1 T2 W P E SOP-8 330±1 62 ± 1.5 12.75 + 0.1 5 2 + 0.5 12.4 +0.2 2± 0.2 12 + 0.3 - 0.1 8± 0.1 1.75± 0.1 Application F D D1 Po P1 Ao Bo Ko t SOP-8 5.5 ± 0.1 1.55±0.1 1.5+ 0.25 4.0 ± 0.1 2.0 ± 0.1 6.4 ± 0.1 5.2± 0.1 2.1± 0.1 0.3±0.013 (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