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IL700D
HIGH VOLTAGE HIGH-FREQUENCY STEP-UP SWITCHING REGULATOR-CONTROLLER The IL700D is a monolithic high voltage switching regulator-controllers with PWM/PFM control that is specifically designed to operate from a rectified 220 VAC line source. This device contain a reference voltage source, oscillation circuit, error amplifier, phase compensation circuit, PWM control circuit, power supply 450 V MOS-transistor, 700 V DMOS power switch, and other components. Since the oscillation frequency is a high 600 kHz, with the addition of a small external component, the IC can function as switching regulator with high efficiency. The IL700D provides low-ripple power, high-efficiency, and excellent transient characteristics thanks to a PWM control circuit capable of varying the duty ratio linearly from 0% to 82% and optimized error amplifier, and phase compensation circuit. The IL700D contains a PWM/PFM switching control circuit so that it operates using PWM control with a duty ratio of 27% or higher and using PFM control with a duty ratio of lower than 27% to ensure high efficiency in all load ranges.
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Pin Name NC VddHV NC Vdd Vz CVREF GND FB CSS SENSE NC NC NC NC SOURCE SOURCE SOURCE NC NC DRAIN Function Not used IC high power supply Not used IC internal low power supply Voltage on zener diode Reference voltage source pass capacitor connection pin Gnd pin FB for external setting type Soft-start capacitor connection pin Current limit detection pin Not used Not used Not used Not used Power switch source Power switch source Power switch source Not used Not used Power Switch Drain
Korzhenevskogo 12, Minsk, 220108, Republic of Belarus Fax: +375 (17) 278 28 22, 1 Phone: +375 (17) 278 07 11, 212 24 70, 212 24 61, 212 69 16 E-mail: office@bms.by URL: www.bms.by
IL235Z
Features
* Operate from a rectified 220 VAC line source. * Oscillation frequency: 600 kHz. * Output voltage external setting (FB) type available. FB terminal voltage (VFB) 1.0 V. * Minimum of external components. The only peripheral components that can be used with IC are a coil, a diode, capacitors, and a resistor. * Built-in converter of high voltage in low voltage, using 450 V MOS-transistor and Zener diode. * Built-in 700 V DMOS power switch. * Duty ratio: 0% to 27% typ. PFM control 27% to 82% typ. PWM control * Built-in current limiting circuit: Assigned by internal resistor (RSENSE). * Soft-start function: Can be set with an external capacitor (CSS).
Block diagram
Vdd Phase compensation circuit VddHV TR1 DRAIN
Triangular wave oscillation circuit
SENSE TR2 R1 R2 Vz Soft-start circuit ZD1 PWM/PFM switching control circuit Voltage/current reference
Rs Cs
RSENSE
SOURCE
120mV
FB
VREF=1.0V
SS
VREF
Vss
* - Pin number are defined during designing
Korzhenevskogo 12, Minsk, 220108, Republic of Belarus Fax: +375 (17) 278 28 22, 2 Phone: +375 (17) 278 07 11, 212 24 70, 212 24 61, 212 69 16 E-mail: office@bms.by URL: www.bms.by
IL700D
ABSOLUTE MAXIMUM RATING Item Vdd pin voltage VddHV pin voltage DRAIN pin voltage DRAIN pin current FB pin voltage CVREF pin voltage CSS pin voltage SENSE pin voltage Vz pin voltage Power dissipation (Ta=25C unless otherwise specified) Symbol Vdd VddHV VDRAIN IDRAIN VFB VCVREF VCSS VSENSE Vz PD Ratings Vss-0.3 to 16 Vss-0.3 to 450 Vss-0.3 to 700 300 Vss-0.3 to 16 Vss-0.3 to Vdd+0.3 Vss-0.3 to Vdd+0.3 Vss-0.3 to Vdd+0.3 Vss-0.3 to Vdd+0.3 650 Units V V V mA V V V V V mW
ELECTRICAL CHARACTERISTICS
Parameter FB pin voltage FB pin voltage Line regulation Oscillation start voltage Current consumption in static mode Current consumption in dynamic mode Current limit detection voltage Current limit detection voltage DRAIN pin output current Oscillation frequency Oscillation frequency Maximum duty ratio PWM/PFM-control switch duty ratio Drain-Source Off-State Leakage Current Soft-Start time
(Ta=25C unless otherwise specified) Conditions Symbol VFB VFB VFB1 VST ISS1 ISS2 VSENSE VSENSE IDRAIN fOSC fOSC MaxDuty PFMDuty IDRAIN(off) TSS IL700D Min Typ Max Unit 0.98 1.0 1.02 V 0.97 1.0 1.03 V 90 80 68 510 500 73 19 3.0 120 120 600 600 82 27 40 20 1 4 150 160 172 690 700 89 35 50 14.0 mV V mA mA mV mV mA kHz kHz % % A ms
VddHV=220V, Duty=50%, Ta=25oC VddHV=220V, Duty=50%, Ta= -25oC +85oC 30V VddHV 300V, Duty=50% No external component. The voltage is applied to VddHV VddHV=220V, VFB=1.5V VddHV=220V, VFB=0.5V Judge oscillation stop in "H", at DRAIN pin, Ta=25oC Judge oscillation stop in "H", at DRAIN pin Ta= -25oC +85oC VddHV=220V VddHV=220V. Measure waveform at DRAIN pin Ta=25oC VddHV=220V. Measure waveform at DRAIN pin Ta= -25oC +85oC VddHV=220V. Measure waveform at DRAIN pin VddHV=220V. Under no load VDRAIN=220V VddHV=220V, CSS=4700pF, IOUT=50mA. Measure time until oscillation occurs at DRAIN pin
Korzhenevskogo 12, Minsk, 220108, Republic of Belarus Fax: +375 (17) 278 28 22, 3 Phone: +375 (17) 278 07 11, 212 24 70, 212 24 61, 212 69 16 E-mail: office@bms.by URL: www.bms.by
IL235Z
1N4764 UF1001 220F 3.3H 100F
5V 1A GND
AC IN
22F VddHV
MURS160 DRAIN
1N4148
Vdd 0.1F Vz
IL700T
FB
12 k
2.2F
SENSE 3k
CSS CVREF Vss SOURCE 10nF 4.7nF 10nF
Application Diagram, 85 - 265 VAC Input, 5V/1A Output Flyback Converter
0.22F MURS160
Vcc
VddHV 10F 0.1F Vz Vdd
330H DRAIN
5V 200mA
330H 12 k
IL700T
FB 220F 30
SENSE
CSS CVREF Vss SOURCE
GND
10nF 4.7nF 10nF
GND
Application Diagram, 100 - 400 VDC Input, 5V/200mA Output SEPIC Converter
MURS160 MURS160 10nF 4.7F VddHV 820H 1mH DRAIN LED8 MURS160
AC IN
Vdd 0.1F Vz
IL700T
FB
0.1F
SENSE
CSS CVREF Vss SOURCE 10nF 4.7nF 10nF 100
Application Diagram, 85 - 265 VAC Input, 1/100V/10mA Output Korzhenevskogo 12, Minsk, 220108, Republic of Belarus Fax: +375 (17) 278 28 22, 4 Phone: +375 (17) 278 07 11, 212 24 70, 212 24 61, 212 69 16 E-mail: office@bms.by URL: www.bms.by

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