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Off-Line Regulators Current Mode Switching Regulators - Voltage Mode Switching Regulators MC33362DWG

Off-Line Regulators Current Mode Switching Regulators - Voltage Mode Switching Regulators MC33362DWG

Product catalog summary

Overview: The MC33362 is a high voltage switching regulator designed for use with a rectified 120 VAC line source. It features a 500 V/2.0 A SENSEFET power switch, a 250 V startup FET, and includes various control and protection mechanisms.

Key Specifications:

Includes a 500 V, 2.0 A SENSEFET power switch.
Operates from a rectified 120 VAC line source.
Features a 250 V active off-line startup FET.
Provides cycle-by-cycle current limiting and thermal shutdown.
Includes input undervoltage lockout with hysteresis and output overvoltage protection.

Electrical Characteristics:

Regulator output voltage ranges from 5.5 V to 7.5 V.
Oscillator frequency varies between 260 kHz and 310 kHz.
Error amplifier voltage feedback input threshold is between 2.52 V and 2.68 V.
Power switch drain-source on-state resistance ranges from 4.4 Ω to 12 Ω.

Protection Features:

Cycle-by-cycle current limiting.
Thermal shutdown to prevent overheating.
Output overvoltage protection comparator.

Package Information: Available in 16-lead dual-in-line and wide body surface mount packages, with Pb-free options.

Pin Function Description:

Pin 1: Startup Input - Connects to the rectified AC line voltage source.
Pin 3: VCC - Positive supply voltage input.
Pin 6: RT - Connects to a resistor to program current limit and oscillator frequency.
Pin 7: CT - Connects to a capacitor to program oscillator frequency.

Graphs and Figures: The document includes graphs showing relationships between timing resistor values, oscillator frequency, power switch peak drain current, and other parameters.

Specifications: The document details dimensions and tolerances for the MC33362 model, including:

F: 0.50 to 0.90 mm (0.020 to 0.035 inches)
G: 1.27 mm BSC (0.050 inches BSC)
J: 0.25 to 0.32 mm (0.010 to 0.012 inches)
K: 0.10 to 0.25 mm (0.004 to 0.009 inches)
P: 10.05 to 10.55 mm (0.395 to 0.415 inches)
R: 0.25 to 0.75 mm (0.010 to 0.029 inches)
S: 2.54 mm BSC (0.100 inches BSC)
T: 3.81 mm BSC (0.150 inches BSC)

Procedures and Standards: The document follows ANSI Y14.5M, 1982 standards for dimensioning and tolerancing, with millimeters as the controlling dimension.

Notes:

Dimensions A and B exclude mold protrusion, with a maximum of 0.15 mm (0.006 inches) per side.
Dimension D excludes dambar protrusion, with an allowable excess of 0.13 mm (0.005 inches).

Legal and Usage Information: ON Semiconductor reserves the right to change the product without notice. The document disclaims any warranty or liability for the product's suitability for specific applications. The product is not intended for life-support systems or surgical implants. Unauthorized use may result in indemnification obligations for the buyer.

Contact Information: For technical support in North America, call 800-282-9855. For Japan, contact the ON Semiconductor Japan Customer Focus Center at 81-3-5773-3850. Literature can be ordered through the ON Semiconductor website or by contacting the Literature Distribution Center in Phoenix, Arizona.

Catalog excerpts

Off-Line Regulators Current Mode Switching Regulators - Voltage Mode Switching Regulators MC33362DWG-5

V > CC = 20 VA V > CC = 20 VA > V = −1.0C > V = −1.0C 1.80 V > L = 10 pFT > L = 10 pFT > A = 25 C > A = 25 а C1.75 V1.70 V 3.00 V1.75 V 0.50 V > 0.5 V/DIV 20 mV/DIV 1.0 s/DIV 1.0 s/DIV > V V = 50 VT > CC = 20 VR > pin1 T = 10 kC > A = 25 C ТȒ20−40 −60 −804.08.0121620 > PIN 8 = 1.0 FT > A = 25 C > , STARTUP CURRENT (mA) I start I Vreg, REGULATOR VOLTAGE CHANGE (mV) ТȆ 012345678 0246810121416 0 0 I > reg , REGULATOR SOURCE CURRENT (mA) V > CC , POWER SUPPLY VOLTAGE (V) > T > A = 25 C V > CC = 0 V V > CC = 14 V > , STARTUP CURRENT (mA) start 012345678 01020304050 V > pin1 , STARTUP PIN VOLTAGE (V)...

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Off-Line Regulators Current Mode Switching Regulators - Voltage Mode Switching Regulators MC33362DWG-8

Mirror VCC 3Startup Input 450 Output 2.25 II 9.0RSQDriver ProtectionInputDrain Feedback Input TT 4 I OscillatorPWMPWM Latch Current Limit ThermalShutdownError StartupControlBand GapRegulatorUVLO14.5 V/9.5 VOVP2.6 V Current 2.6 V Regulator Output6.5 VRC867 4, 5, 12, 13Gnd 1116 910 1 Voltage Compensation Power SwitchOvervoltage AC InputDC Comparator Leading Edge Blanking Comparator 270 A Amplifier > Capacitor CCompensationPWMComparatorOutputOscillator OutputPWM LatchQ Output T t Propagation Delay Power SwitchGate Drive Leading EdgeBlanking Input(Power SwitchDrain Current) CurrentLimitThreshold...

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Off-Line Regulators Current Mode Switching Regulators - Voltage Mode Switching Regulators MC33362DWG-10

The Power Switch is designed to directly drive the convertertransformer and is capable of switching a maximum of 500 V and 2.0 A. Proper device voltage snubbing andheatsinking are required for reliable operation. A Leading Edge Blanking circuit was placed in thecurrent sensing signal path. This circuit prevents apremature reset of the PWM Latch. The premature reset is generated each time the Power Switch is driven intoconduction. It appears as a narrow voltage spike across thecurrent sense resistor, and is due to the MOSFET gate to source capacitance, transformer interwinding capacitance,and...

Open the catalog to page 10

Off-Line Regulators Current Mode Switching Regulators - Voltage Mode Switching Regulators MC33362DWG-11

Test Conditions Results Line Regulation V > in = 92 Vac to 138 Vac, I > O 4.0 A = 1.0 mV Load Regulation V > in = 115 Vac, I > O = 1.0 A to 4.0 A = 9.0 mV Output Ripple V > in = 115 Vac, I > O = 4.0 A Triangular = 10 mVppSpike = 60 mVpp Efficiency V > in = 115 Vac, I > O = 4.0 A 78.4% This data was taken with the components listed below mounted on the printed circuit board shown in Figure 23. For high efficiency and small circuit board size, the Sanyo OsCon capacitors are recommended for C8, C9, C10 and C11.C8, C9, C10 = Sanyo OsCon #6SA330M, 330 F 6.3 V.C11 = Sanyo OsCon #10SA220M, 220 F 10...

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Off-Line Regulators Current Mode Switching Regulators - Voltage Mode Switching Regulators MC33362DWG-13

NOTES:1.DIMENSIONING AND TOLERANCING PER ANSIY14.5M, 1982.2.CONTROLLING DIMENSION: INCH. 3.DIMENSION L TO CENTER OF LEADS WHENFORMED PARALLEL.4.DIMENSION A AND B DOES NOT INCLUDE MOLDPROTRUSION.5.MOLD FLASH OR PROTRUSIONS SHALL NOTEXCEED 0.25 (0.010).6.ROUNDED CORNER OPTIONAL. 16918 > 16981 NOTES:1.DIMENSIONING AND TOLERANCING PER ANSIY14.5M, 1982.2.CONTROLLING DIMENSION: MILLIMETER. 3.DIMENSIONS A AND B DO NOT INCLUDE MOLDPROTRUSION.4.MAXIMUM MOLD PROTRUSION 0.15 (0.006) PERSIDE.5.DIMENSION D DOES NOT INCLUDE DAMBARPROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.13 (0.005) TOTAL INEXCESS...

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