Details and datasheet on part: MC33364

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Part: MC33364

Category:
Analog & Mixed-Signal Processing
-> Power

Description: Critical Conduction Greenlinetm SMPS Controller

Company: ON Semiconductor

Datasheet: Download MC33364 datasheet File size : 39 kB

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MC33364 Critical Conduction GreenLineTM SMPS Controller
The MC33364 series are variable frequency SMPS controllers that operate in the critical conduction mode. They are optimized for high density power supplies requiring minimum board area, reduced component count, and low power dissipation. Integration of the high voltage startup saves approximately 0.7 W of power compared to the value of the resistor bootstrapped circuits. Each MC33364 features an onboard reference, UVLO function, a watchdog timer to initiate output switching, a zero current detector to ensure critical conduction operation, a current sensing comparator, leading edge blanking, a CMOS driver and cyclebycycle current limiting. The MC33364D1 has an internal 126 kHz frequency clamp. The MC33364D2 is available without an internal frequency clamp. The MC33364D has an internal 126 kHz frequency clamp which is pinned out, so that the designer can adjust the clamp frequency by connecting appropriate values of resistance. · Lossless OffLine Startup · Leading Edge Blanking for Noise Immunity · Watchdog Timer to Initiate Switching · Operating Temperature Range 25° to +125°C · Shutdown Capability · Over Temperature Protection · Optional/Adjustable Frequency Clamp to Limit EMI
85 to 265 VAC EMI Filter +
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8 8 1 SO8 D1, D2 SUFFIX CASE 751 1 16 16 1 SO16 D SUFFIX CASE 751K 1 x = 1 or 2 A = Assembly Location WL, L = Wafer Lot YY, Y = Year WW, W = Work Week MC33364D AWLYWW M64Dx ALYW
PIN CONNECTIONS
MC33364D1 MC33364D2 Zero Current Current Sense Voltage FB Vref 1 2 3 4 (Top View) MC33364D Zero Current N/C Current Sense 1 2 3 4 5 6 7 8 (Top View) 13 N/C 12 Vcc 11 Gate Drive 10 P GND 9A GND 16 Line 8 Line 7 VCC 6 Gate Drive 5 GND
Line Vcc UVLO Ref ZCD UVLO StartUp Restart Delay Watchdog Timer Current Sense R RQ S Thermal shutdown Frequency clamp FC AGND Vcc GATE PGND LEB CS
ZCD
VREF
Voltage FB N/C Vref N/C Freq Clamp
FB
Figure 1. Typical Application
ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 14 of this data sheet.
© Semiconductor Components Industries, LLC, 2002
1
September, 2002 Rev. 12
Publication Order Number: MC33364/D
MC33364
Line Vcc Vcc UVLO Reference 15 / 7.6 ZCD ZCD Vref Buffer Ref UVLO StartUp 4.7 Restart Delay
10V VREF
1.2/1.0
Watchdog Timer R R S Level SNA Thermal shutdown
Vcc GATE
5k FB 45k 15k
Q
Current Sense 1.25V 2V 0.1V 4k 10V
Frequency clamp
PGND
LEB AGND
CS
FC
This device contains 335 active transistors.
Figure 2. Representative Block Diagram
Load Current
Voltage FB Drain Current
LEB 10V
ZCD
0V -0.7V
Programmed Minimum Off Time (FC) Gate Drive
Normal Load
No Load
Figure 3. Timing Diagrams
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MC33364
PIN DESCRIPTION
Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ
1 (1) Zero Current Detect The ZCD Pin ensures critical conduction mode. ZCD monitors the voltage on the auxiliary winding, during the demagnetization phase of the transformer, comparing it to an internal reference. The ZCD sets the latch for the output driver. 3 (2) Current Sense The Current Sense Pin monitors the current in the power switch by measuring the voltage across a resistor. Leading Edge Blanking is utilized to prevent false triggering. The voltage is compared to a resistor divider connected to the Voltage Feedback Pin. A 110 mV voltage offset is applied to compensate the natural optocoupler saturation voltage. The Voltage Feedback Pin is typically connected to the collector of the optocoupler for feedback from the isolated secondary output. The Feedback is connected to the Vref Pin via a 5 k resistor providing bias for the external optocoupler. The Vref Pin is a buffered internal 5.0 V reference with Undervoltage Lockout. 4 (3) Voltage Feedback 6 (4) Vref 8 (NA) Frequency Clamp The Frequency Clamp Pin ensures a minimum offtime value, typically 6.9 ms. It prevents the MOSFET from restarting within a fixed (33364D1) or adjustable (33364D) delay. The minimum offtime is disabled in the 33364D2. Therefore the maximum switching frequency cannot exceed 1/(TON + TOFFmin). This pin is the ground for the internal circuitry excluding the gate drive stage. This pin is the ground for the gate drive stage. 9 (5) A GND P GND 10 (5) 11 (6) Gate Drive VCC The gate drive is the output to drive the gate of the power MOSFET. 12 (7) 16 (8) Provides the voltage for all internal circuitry including the gate drive stage and Vref. This pin has Undervoltage Lockout with hysteresis. The Line Pin provides the initial power to the VCC pins. Internally the line pin is a high voltage current source, eliminating the need for an external startup network. Line
Pin
Function
Description
For further information please refer to the following Application Notes; AN1594: Critical Conduction Mode, Flyback Switching Power Supply Using the MC33364. AN1681: How to keep a Flyback SwitchMode Power Supply Stable with a CriticalMode Controller.
MAXIMUM RATINGS (TA = 25°C, unless otherwise noted.)
ÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á
Power Supply Voltage (Operating) Line Voltage VCC 16 V V V VLine Vin1 Iin Iin 700 Current Sense, Compensation, Voltage Feedback, Restart Delay and Zero Current Input Voltage Zero Current Detect Input Restart Diode Current 1.0 to +10 ±5.0 5.0 mA mA Power Dissipation and Thermal Characteristics D1 and D2 Suffix, Plastic Package Case 751 Maximum Power Dissipation @ TA = 70°C Thermal Resistance, JunctiontoAir D Suffix, Plastic Package Case 751B05 Maximum Power Dissipation @ TA = 70°C Thermal Resistance, JunctiontoAir Operating Junction Temperature Operating Ambient Temperature Storage Temperature Range PD Rq J A PD Rq J A TJ 450 178 550 145 150 mW °C/W mW °C/W °C °C °C
Rating
Symbol
Value
Unit
ÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á
TA 25 to +125 55 to +150 Tstg NOTE: ESD data available upon request.
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