M62502FPのデータシート
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The M62502 is a PWM controller IC for CRT display monitors. It performs stable PWM control over a wide range of external signal fluctuations using a built-in trigger mode oscillator. The IC is suitable for high voltage drive and horizontal output correction in CRT monitors. It features PWM output synchronized to external signals, a wide PWM control frequency range of 15kHz to 150kHz, and a soft start function for low voltage protection.
M62502FPのデータシート
- 1. Y n. e. MITSUBISHI (Dig./Ana. INTERFACE) A L cificacttioto chang I N pe I M final s subje E L is noct lamits are R is i M62502FP P ces;Thametri i r Not me pa PWM IC for the synchronized deflection system control So GENERAL DESCRIPTION The M62502 is a controller for a deflection system of CRT display PIN CONFIGURATION(TOP VIEW) monitors. It performs a stable PWM control over a wide fluctuation of external signals, thanks to the built-in trigger mode oscillator. The IC is suitable for an application to a high voltage drive and a PWM OUT 1 16 GND horizontal output correction of CRT monitors because of its following circuits and functions; Vcc 2 15 VREF M62502FP • Under Voltage Lock Out circuit (UVLO) TIN 3 14 DTC • Soft-start function Cosc 4 13 FB FEATURES Cagc1 5 12 IN – • PWM output synchronized with external signals Ragc 6 11 IN + • Wide PWM control frequency Cagc2 7 10 Duty 15kHz to 150kHz 2fh 8 9 DOUT • Soft start function • Low voltage malfunction protection circuit start Vcc > 9V Outline 16P2N-A stop Vcc < 6V APPLICATION • C R T display monitor BLOCK DIAGRAM Duty DRIVE GND VREF DTC FB IN- IN+ Adj OUTPUT 16 15 14 13 12 11 10 9 VCC VREF Duty Amp cont Comp Wind comp Comp UVLO GEN AGC Edge GEN AGC detection 1 2 3 4 5 6 7 8 PWM OUT VCC TIN COSC CAGC1 RAGC CAGC2 2fh (1/7)
- 2. Y n. e. MITSUBISHI (Dig./Ana. INTERFACE) A L cificacttioto chang I N pe I M final s subje E L is noct lamits are R is i M62502FP P ces;Thametri i r Not me pa PWM IC for the synchronized deflection system control So Terminal Number and The facility PIN No. Symbol Functional Description 1 PWM OUT PWM output 2 VCC Power supply 3 TIN Trigger input 4 COSC Setting oscillating frequency 5 Cagc1 AGC setting 6 RAGC AGC Current setting resistor connected to this terminal 7 Cagc2 AGC setting 8 2fh Double velocity reshuffle 9 DOUT Drive output 10 Duty Duty regulation 11 IN+ Positive input of Op-Amp. 12 IN- Negative input of Op-Amp. 13 FB Output of Op-Amp. 14 DTC Dead time control (Soft start function) 15 VREF Output of reference voltage (5V) 16 GND Ground Absolute Maximum Rating (Ta=25°C,unless otherwise noted) Symbol Parameter Conditions Ratings Unit VCC Supply voltage 15 V VOUT Output voltage 15 V IOUT Output current ±100 mA Vd Drive output voltage 15 V Id Drive output current 20 mA VICM Error amplifier input common V mode voltage range -0.3 to VCC VID Error amplifier input common VCC V mode voltage Pd Power dissipation 650 mW K Thermal derating ratio Ta≥25°C 5.2 mW/°C Topr Operating ambient temperature -20 to +75 °C Tstg Storage temperature -40 to +150 °C (2/7)
- 3. Y n. e. MITSUBISHI (Dig./Ana. INTERFACE) A L cificacttioto chang I N pe I M final s subje E L is noct lamits are R is i M62502FP P ces;Thametri i r Not me pa PWM IC for the synchronized deflection system control So ELECTRICAL CHARACTERISTICS (Vcc=12V, TIN=40kHz, Ta=25°C, unless otherwise noted) Limits Block Symbol Parameter Test conditions Unit Min Typ Max VCC Range of power supply VCC OFF 14 V ICC Circuit current Output off mode 25 mA VREF Reference voltage 4.80 5.00 5.20 V Reg-in Input regulation 1.0 10 mV Reference voltage Reg-L Load regulation 2.0 20 mV section TCVREF Reference voltage thermal coefficient 0.01 %/°C IREF MAX Maximum reference current -30 mA IS Short-circuit current -30 mA VIO Input offset voltage 7 mV IIb Input bias current -100 nA IIO Input offset current -100 100 nA Error VICM Common mode input voltage range -0.3 VCC-2 V Amp. AV Open loop transmission gain 70 110 dB SR Slew rate 4 V/µs VOR Output voltage range 0.3 VREF-1.5 V Isink Output sink current 10 mA Isourse Output source current -10 mA fOSC Oscillation frequency 15 150 kHz VOSC H The oscillator waveform bound voltage 3.5 V Oscillator VOSC L The oscillator waveform lower limit voltage 1.5 V VTIN H High level of TIN 2.5 VCC V VTIN L Low level of TIN 1.0 V PWM output Vsat L Output saturation voltage L IO=100mA 0.7 1.4 V section Vsat H Output saturation voltage H IO=-100mA 9.5 10.5 V UVLO VTH ON ON threshold voltage 8.0 9.0 10.0 V section VTH OFF OFF threshold voltage 5.4 6.0 6.6 V Duty adj IDuty Input current VDuty=2.5V -6.5 -1.3 - µA section Duty max Maximum ON duty VDuty=3V 5.0 µsec UVP VUVPO Input offset voltage Id=10mA 0.4 V section IIN UVP UVP terminal input current VDO=12V 1.0 µA fh reshuffle Ifh fh terminal current Vhf=5V - 330 430 µA section Vfh fh reshuffle voltage 0.4VREF 0.5VREF 0.6VREF V (3/7)
- 4. Y n. e. MITSUBISHI (Dig./Ana. INTERFACE) A L cificacttioto chang I N pe I M final s subje E L is noct lamits are R is i M62502FP P ces;Thametri i r Not me pa PWM IC for the synchronized deflection system control So Terminal functional description and equivalent circuit Terminal No. Symbol Function and internal circuit PWM output 2 Vcc • PWM output synchronized with the TIN input is available. • Output "H" level = 10.5V typ (The output current:-100mA,Vcc=12V) PWM 1 PWM OUT • Output "L" level = 0.7V Typ 1 OUT (The output current:+100mA,Vcc=12V) 16 GND 2 Vcc Power supply Vcc 2 15 VREF Trigger input • Frequency range 15kHz to 150kHz • It is taken on a leading edge. TIN 3 TIN input waveform 3 TIN MIN 2.5V MAX 1.0V 16 GND A saw-wave oscillator timing setting (Cosc) • A saw-wave is generated by connecting the capacitor between pin4 and GND. • Recommended capacitor value is 1000pF. Setting AGC sensitivity (Cagc) • The sensitivity of AGC circuit is set by connecting the capacitor between pin5 4 Cosc and GND. • Recommended capacitor value is 1µF. VREF 15 5 Cagc1 Cosc 4 ~ ~ 5 Cagc1 ~ GND 16 (4/7)
- 5. Y n. e. MITSUBISHI (Dig./Ana. INTERFACE) A L cificacttioto chang I N pe I M final s subje E L is noct lamits are R is i M62502FP P ces;Thametri i r Not me pa PWM IC for the synchronized deflection system control So Terminal No. Symbol Function and internal circuit VREF AGC current setting • The resistor is connected between pin6 and GND for setting AGC current flowing in DOUT circuit. 6 Ragc Ragc 6 VREF Setting AGC sensitivity • The sensitivity of AGC is set by connecting the capacitor between pin7 and GND. • Recommended capacitor value is 1µF. 7 Cagc2 Cagc2 7 Frequency selection VREF • The frequency of drive output is alternated between just(fh) and doubled(2fh) one. 8 2fh 2fh 8 ~ OPEN, GND : fh VREF : 2fh ~ ~ VREF Drive output • Open collector circuit. 9 DOUT 9 DOUT VREF The duty adjustment of drive output 10 Duty Duty 10 (5/7)
- 6. Y n. e. MITSUBISHI (Dig./Ana. INTERFACE) A L cificacttioto chang I N pe I M final s subje E L is noct lamits are R is i M62502FP P ces;Thametri i r Not me pa PWM IC for the synchronized deflection system control So Terminal No. Symbol Function and internal circuit Vcc 2 Positive input of Op-Amp (IN+) 11 IN+ Negative input of OP Amp (IN-) 12 IN- IN+ 11 12 IN- Output of Op-Amp (FB) Dead time control (DTC) • A soft start function is available during power-on by adopting 15 VREF a time constant. 13 FB DTC 14 Cosc FB 13 4 14 DTC PWM comparator section GND 16 Reference voltage terminal Vcc 2 • 5V is output via this terminal. A current capability is 5mA. 15 VREF 15 VREF - + GND 16 16 GND • Ground (6/7)
- 7. Y n. e. MITSUBISHI (Dig./Ana. INTERFACE) A L cificacttioto chang I N pe I M final s subje E L is noct lamits are R is i M62502FP P ces;Thametri i r Not me pa PWM IC for the synchronized deflection system control So M62502 application IN- IN+ R2 R3 Duty Vcc VR1 C3 C5 R5 C2 R1 C4 R4 DOUT D1 16 15 14 13 12 11 10 9 VCC VREF Duty Amp cont Comp Wind comp Comp UVLO GEN AGC Edge detection GEN AGC Vcc 1 2 3 4 5 6 7 8 Cosc Cagc1 Cagc2 Ragc PWM OUT TIN 2fh C1 C1,C2 ----------- These capacitors are for stabilization of Vcc and VREF. VR1 ----------- It is decided considering a current capability of VREF. (The capability is about 5mA.) Recommended value is around 10kΩ C3,D1 ----------- They are for a soft start function. A time constant is decided considering VR1. Cagc1,2 ----------- These capacitors are for stabilization of AGC circuit. A larger capacitor improves a stability of the system, however a system response is degraded. Recommended capacitor value is around 1µF. Cosc ---------- This capacitor is for the saw-wave generation. Recommended capacitor value is around 1000pF. R1,R2,R3,R4 ----- They are for the gain setting of the error Amp. R2 should be several kΩ to dozens of kΩ C4,C5 to set a voltage gain 20dB to 40dB at f = 1kHz, so that the feed back loop is stable. When the voltage gain is too low, it causes jitter. Recommended values of C4, C5 and R1 are ; C4 = dozens of pF to several hundreds pF, C5 = several thousands pF to tens of thousands pF, R1 = dozens of kΩ to several hundreds kΩ. Ragc ----------- This resistor is for the AGC setting of DOUT. Recommended value is 27kΩ. R5 ----------- It is a pull-up resister of DOUT output, because DOUT is configured by the open collector circuit. Recommended value is several kΩ. (7/7)
- 8. This datasheet has been download from: www.datasheetcatalog.com Datasheets for electronics components.