FP1451 FEELING | Alldatasheet
Document overview
- Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
- PDF pages: 17
Technical content
DUAL CHANNEL PWM CONTROL IC WITH SCP/DTC FUNCTION GENERAL DESCRIPTION The FP1451, a 1-chip composed of dual open collector transistor pulse-width-modulation control circuits with two error amplifiers and dead-time comparators (DTC), the FP1451 contains a 2.5V precision voltage reference regulator, under-voltage lockout circuit (UVLO), short circuit protection circuit (SCP), applied to offer space and low cost in many applications such as the DC/DC converter and backlight inverter. Using few external components, FP1451, a high performance integrated IC, is designed for a control circuit. The circuit diagram of the typical application example is as below.
FEATURES
˙Fixed Reference Voltage: 2.5V ˙Reference Voltage Precision: 2% (FP1451) ˙Output sink current up to 100mA ˙Low quiescent supply current ˙Wide operating voltage range: 3.6~40V ˙Variable dead-time control (DTC) ˙UVLO protection function PDIP 16 ˙SCP protection function ˙Oscillator Frequency: Max. 500KHz ˙Package: SOP16 / PDIP16 TYPICAL APPLICATION ˙DC/DC converters for video cameras and TFT LCD monitor ˙Back light CCFL inverter. Rev0.5 Apr. 01, 2004 P1/FP1451
R SR UVLO 1/2 Vref PWM COMP PWM COMP MARK VIEW PIN DESCRIPTION NAME NO. STATUS DESCRIPTION CT 1 I Connect a Capacitor for Oscillator RT 2 I Connect a Resistor for Oscillator EA1+ 3 I Error Amplifier 1 Non-inverting Input EA1- 4 I Error Amplifier 1 Inverting Input FB1 5 O Error Amplifier 1 Feedback Output DTC1 6 I Output 1 Dead-Time Comparator OUT1 7 O Open Collector Output 1 GND 8 P IC Ground VCC 9 P IC Power Supply OUT2 10 O Open Collector Output 2 DTC2 11 I Output 2 Dead-Time Comparator FB2 12 O Error Amplifier 2 Feedback Output EA2- 13 I Error Amplifier 2 Inverting Input EA2+ 14 I Error Amplifier 2 Non-inverting Input SCP 15 I Short Circuit Protection Input VREF 16 O 2.5V Reference Voltage Output FP1451 Rev0.5 Apr. 01, 2004 P2/FP1451
Part Number Operating Temperature Package Description FP1451P-LF -20°C～85°C PDIP16 Tube FP1451D-LF -20°C～85°C SOP16 Tube FP1451DR-LF -20°C～85°C SOP16 Tape & Reel IC DATE CODE DISTINGUISH FP145 L Year Per Half Month Lot Number Mass Production Version Lead Free FOR EXAMPLE: January A (Front Half Month), B (Last Half Month) February C, D Lot Number is the last two numbers For Example: A3311C Lot Number Rev0.5 Apr. 01, 2004 P3/FP1451
260℃ 180℃ 25℃ 15s 60s 190s 210℃ 280s 260℃ / 10 sec -1.2℃ / sec+0.23℃ / sec +3.4℃ / sec Rev0.5 Apr. 01, 2004 P4/FP1451
DC ELECTRICAL CHARACTERISTICS Electrical characteristics over recommended operating free-air temperature range, VCC=6V, f=200kHz (unless otherwise noted) Reference section PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Output voltage (pin 16) VREF IO=1mA 2.45 2.5 2.55 V TA=-20℃ to 25℃ -0.1% ±1% Output voltage change with Temperature TA=25℃ to 85℃ -0.2% ±1% Input voltage regulation △VREF /VREF Vcc=3.6V～40V 2 12.5 mV Output voltage regulation △VREF /VREF Io = 0.1mA to 1 mA 1 7.5 mV Short-circuit output current ISHORT VO=0 3 10 30 mA Undervoltage lockout section PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Upper threshold voltage(Vcc) VUPPER 2.72 V Lower threshold voltage(Vcc) VLOW 2.6 V Hysteresis (Vcc) VHYS 80 120 mV Reset threshold voltage(Vcc) VRESET IO(REF) = 0.1 mA, TA=25℃ 1.5 1.9 V Short-circuit protection control section PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Input threshold voltage (SCP) VTH TA= 25℃ 0.65 0.7 0.75 V Standby voltage (SCP) VSTANDBY No pullup 140 185 230 mV Latched input voltage (SCP) VLATCH No pullup 60 120 mV Input (source) current ISOURCE VI=0.7V, TA=25℃ -10 -15 -20 μA Comparator threshold voltage (FEEDBACK) VCOMP(TH) 1.18 V Oscillator section PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Frequency f CT=330pF,RT=10K 200 KHZ Standard deviation of frequency △f CT=330pF,RT=10K 10% Frequency change with voltage △f/△V VCC=3.6V to 40V 1% TA=-20℃ to 25℃ -0.4% ±2% Frequency change with Temperature △f/△T TA=25℃ to 85℃ -0.2% ±2% Dead-time control section PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Input bias current (DTC) IBIAS 1 μA Latch mode (source) current(DTC) ISOURCE TA=25℃ -80 -200 μA Latched input voltage (DTC) VLATCH IO=40μA 2.3 V Zero duty cycle 2.05 2.25 Input threshold voltage at f=10kHZ(DTC) VTH Maximum duty cycle 1.2 1.45 V Rev0.5 Apr. 01, 2004 P5/FP1451
DC ELECTRICAL CHARACTERISTICS (Cont.) Error –amplifier section PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Input offset voltage VIO Vo(FEEDBACK)=1.25V ±6 mV Input offset current IIO Vo(FEEDBACK)=1.25V ±100 nA Input bias current IBIAS Vo(FEEDBACK)=1.25V 160 500 nA Common-mode input voltage range VICM VCC=3.6V to 40 V 0.3 1.6 V Open-loop voltage amplification AVO RF=200KΩ 70 80 dB Unity-gain bandwidth BW 1.5 MHZ Common-mode rejection ratio CMRR 60 80 dB Positive output voltage swing VPOS Vref-0.2 V Negative output voltage swing VNEG 1 V Output (sink) current (FEEDBACK) ISINK VID=－0.1V,VO=1.25V 1 4.0 mA Output (source) current (FEEDBACK) ISOURCE VID=0.1V, VO=1.25V -45 -90 μA Output section PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Collector off-state current IOFF VO=40V 10 μA Output saturation voltage VSAT IO=10mA 0.7 1 V Short-circuit output current ISC VO=6V 150 mA Pwm comparator section PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Zero duty cycle 2.05 2.25 Input threshold voltage at f=10kHz(FEEDBACK) VTH Maximum duty cycle 1.2 1.45 V Total device PARAMETER SYMBOL TEST CONDITIONS MIN TYP+ MAX UNIT Standby supply current ISTANDBY Off-state 1.3 1.8 mA Average supply current IAVE RT=10K 1.7 2.4 mA Rev0.5 Apr. 01, 2004 P6/FP1451
REFERENCE OUTPUT VOLTAGE VARIATION VS FREE-AIR TEMPERATURE Vo(ref) - Reference Output Voltage Variation - mV△ TA - Free-Air Temperature - o C -25 0 25 50 75 100 -30 -20 -10 REFERENCE OUTPUT VOLTAGE VARIATION VS FREE-AIR TEMPERATURE Vo(ref) - Reference Output Voltage Variation - mV△ TA - Free-Air Temperature - o C -25 0 25 50 75 100 -30 -20 -10 I(ref) = 1mA Vcc = 3.6 V I(ref) = 1mA Vcc = 40 V OSCILLATOR FREQUENCY VARIATION VS FREE-AIR TEMPERATURE f△ OSC - Oscillator Frequency Varation - % -25 0 25 50 75 100 TRIANGLE WAVEFORM SWING VOLTAGE VS TIMING CAPACITANCE Triangle Waveform Swing Voltage - V CT - Timing Capacitance - pF o C 0.8 1.2 1.4 1.6 1.8 2.2 2.4 2.6 110 210 510310 410 TRIANGLE WAVEFORM PERIOD VS TIMING CAPACITANCE Triangle Waveform Period - µs CT - Timing Capacitance - pF 12 10 510310 41010 -110 010 110 210 TA - Free-Air Temperature - TA = 25 oC RT = 5.1 KΩ Vcc = 5 V TA = 25 oC RT = 5.1 KΩ Vcc = 5 V CT = 330pF RT = 10 KΩ Vcc = 3.6 V fosc = 200kHz TRIANGLE OSCILLATOR FREQUENCY VS TIMING RESISTANCE fOSC - Triangle Oscillator Frequency - Hz 1 K 10 K 100 K 1 M
1 K 4 K 10 K 40 K 100 K 400 K 1 M
RT - Timing Resistance - Ω Vcc = 5 V TA = 25 oC CT = 100 pF TC = 1000 pF CT = 10000 pF Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Rev0.5 Apr. 01, 2004 P7/FP1451
TYPICAL CHARACTERISTICS (Cont.) 1.25 V ERROR AMP 1 ERROR AMP 2 Short - Circuit Protection Comparator CPE S R Protection Latch U.V.L.O SCP Vref 170KΩ Vref Vref KΩ12 PROTECTION ENABLE TIME VS PROTECTION ENABLE CAPACITANCE tpe - Protection Enable Time - S CPE - Protection Enable Capacitance - µF 0 50 100 150 200 250 Figure 12 Rev0.5 Apr. 01, 2004 P9/FP1451
H L H L Dead Time 100% 0 V 0.6 V H L 0 V 3.6 V tpe
2.8 V TYPPower Supply Voltage
Output Transistor Collector Waveform PWM Comparator Output Voltage Comparator Input Voltage Short-Circuit Protection Dead-Time Input Voltage Error Amplifier Output Oscillator Triangle Waveform 1.6 V 2.0 V 1.4 V 1.25 V FP1451 Timing Diagram Protection Enable Time, tpe = (0.047 * 10E6 * Cpe) in seconds Rev0.5 Apr. 01, 2004 P11/FP1451
Figure 17. 2-channel dc-dc converter circuit
E H D A 0.016typ. 0.15x4 5o 0.008typ. View ? View ? L o 0.050typ. 0.004max SYMBOLS MIN MAX A 0.053 0.069 A1 0.004 0.010 D 0.386 0.394 E 0.150 0.157 H 0.228 0.244 L 0.016 0.050 θ° 0 8 NOTE: 1.JEDEC OUTLINE:MS-012 AC 2.DIMENSIONS “D” DOES NOT INCLUDE MOLD FLASH,PROTRUSIONS OR GATE BURRS.MOLD FLASH,PROTRUSIONS AND GATE BURRS SHALL NOT EXCEED .15mm (.0.06in) PER SIDE 3.DIMENSIONS “E” DOES NOT INCLUDE INTER-LEAD FLASH,OR PROTRUSIONS. 4.INTER-LEAD FLASH AND PROTRUSIONS SHALL NOT EXCEED .25mm (.0.10in) PER SIDE. Rev0.5 Apr. 01, 2004 P13/FP1451
D E θo eB L 0.018typ. 0.100typ. 0.080typ. A H SEATING PLANE SYMBOLS MIN. NOR. MAX. A — — 0.210 A1 0.015 — — A2 0.125 0.130 0.135 D 0.735 0.755 0.775 E 0.300 BSC. E1 0.245 0.250 0.255 L 0.115 0.130 0.150 eθ 0.335 0.355 0.375 θ° 0 7 15 NOTES: 1.JEDEC OUTLINE: MS-001 BB 2.“D”, “E1” DIMENSIONS DO NOT INCLUDE MOLD FALSH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH. 3.eB IS MEASURED AT THE LEAD TIPS WITH THE LEADS UNCONSTRAINED. 4.POINTED OR ROUNDED LEAD TIPS ARE PREFERRED TO EASE INSERTION. DISTANCE BETWEEN LEADS INCLUDING DAM BAR PROTRUSIONS TO BE .005 INCH MININUM. 5.DATUM PLANE CONCIDENT WITH THE BOTTOM OF LEAD, WHERE LEAD EXITS BODY. Rev0.5 Apr. 01, 2004 P14/FP1451
TUBE INSIDE BOX AND CARTON BOX LABEL FTC Logo 190mm 630mm INSIDE BOX 100mm BOX LABEL 380mm 640mm TU BE CARTON 220mm FTC Logo TAPE AND REEL INSIDE BOX AND CARTON FTC label 362mm 342mm 50mm CARTON LAB EL FTC Logo 230mm 380mm 365mm Tape & Reel Carton PACKING QUANTITY SPECIFICATIONS
50 EA/TUBE 2500 EA / REEL
50 TUBES / INSIDE BOX 4 INSIDE BOXES / CARTON
4 INSIDE BOXES / CARTON
TAPPING & REEL Feeling Technology Corp. Product： Lot No ： D/C ： Q'ty ◎～◎ 無鉛 Lead Free FP1451 A3311C62 4Xx-XXL Rev0.5 Apr. 01, 2004 P15/FP1451
Feeling Technology Corp. Product Type: Lot No: Date Code: Package Type: Marking Type: Total Q'ty: 無 鉛 Lead Free FP1451 A3311C62 4Xx-XXL SOP-16L Laser 10,000 CARRIER TAPE DIMENSIONS APPLICATION W P E F D D1 APPLICATION P0 P1 A0 B0 K0 t Rev0.5 Apr. 01, 2004 P16/FP1451
APPLICATION MATERIAL A B C D T1 T2 SOP16 PLASTIC REEL -0.216.4 2.5±0.5 Rev0.5 Apr. 01, 2004 P17/FP1451