TOP101AI POWERINT [Power Integrations, Inc.], TOP101AI Datasheet

TOP101AI

Manufacturer Part Number

TOP101AI

Description

Three-terminal Off-line PWM Switch

Manufacturer

POWERINT [Power Integrations, Inc.]

Datasheet

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TOP100-4

TOPSwitch Family

Three-terminal Off-line PWM Switch

Low Cost Replacement for Discrete Switchers

• 20 to 50 fewer components - cuts cost, increases reliability

• Source-connected tab and Controlled MOSFET turn-on

• Allows for a 50% smaller and lighter solution

• Cost competitive with linears above 5 W

Up to 90% Efficiency in Flyback Topology

• Built-in start-up and current limit reduce DC losses

• Low capacitance 350 V MOSFET cuts AC losses

• CMOS controller/gate driver consumes only 6 mW

• 70% maximum duty cycle minimizes conduction losses

Simplifies Design - Reduces Time to Market

• Supported by many reference designs

• Integrated PWM Controller and 350 V MOSFET in a

• Only one external capacitor needed for compensation,

System Level Fault Protection Features

• Auto-restart and cycle by cycle current limiting functions

• On-chip latching thermal shutdown protects the entire

Highly Versatile

• Implements Buck, Boost, Flyback or Forward topology

• Easily interfaces with both opto and primary feedback

• Supports continuous or discontinuous mode of operation

• Specified for operation down to 16 V DC input

Description

The TOPSwitch family implements, with only three pins, all

functions necessary for an off-line switched mode control

system: high voltage N-channel power MOSFET with controlled

turn-on gate driver, voltage mode PWM controller with

integrated 100 kHz oscillator, high voltage start-up bias circuit,

bandgap derived reference, bias shunt regulator/error amplifier

for loop compensation and fault protection circuitry. Compared

to discrete MOSFET and controller or self oscillating (RCC)

switching converter solutions, a TOPSwitch integrated circuit

can reduce total cost, component count, size, weight and at the

same time increase efficiency and system reliability. These

reduce EMI and EMI filter costs

industry standard three pin TO-220 package

bypass and start-up/auto-restart functions

handle both primary and secondary faults

system against overload

Product Highlights

Figure 1. Typical Application.

* Package Outline: Y03A

devices are intended for 100/110 VAC off-line Power Supply

applications in the 0 to 60 W range and power factor correction

(PFC) applications in the 0 to 110 W range. They are also well

suited for Telecom, Cablecom and other DC to DC converter

applications in the 0-25 W range (see Design Note DN-16).

TOP100YAI*

TOP101YAI*

TOP102YAI*

TOP103YAI*

TOP104YAI*

NUMBER

ORDER

PART

TOPSwitch SELECTION GUIDE

TOPSwitch

CONTROL

SOURCE

DRAIN

100/110 V

15-35 W

20-45 W

25-55 W

30-60 W

0-20 W

VAC

FLYBACK

OUTPUT POWER RANGE

8.5-17 W

11-22 W

12-25 W

0-6.8 W

6-12 W

48 V

45-90 W

55-110 W

25-50 W

35-70 W

PI-1704112995

BOOST

100/110

0-30 W

PFC/

VAC

July 1996

Related parts for TOP101AI

TOP101AI Summary of contents

Page 1

TOP100-4 TOPSwitch Family Three-terminal Off-line PWM Switch Product Highlights Low Cost Replacement for Discrete Switchers • fewer components - cuts cost, increases reliability • Source-connected tab and Controlled MOSFET turn-on reduce EMI and EMI filter costs • ...

Page 2

TOP100 CONTROL Z C SHUNT REGULATOR/ ERROR AMPLIFIER - + 5 OSCILLATOR D MAX CLOCK SAW R E Figure 2. Functional Block Diagram. Pin Functional Description DRAIN Pin: Output MOSFET drain connection. Provides internal bias ...

Page 3

TOPSwitch Family Functional Description TOPSwitch is a self biased and protected linear control current-to-duty cycle converter with an open drain output. High efficiency is achieved through the use of CMOS and integration of the maximum number of functions possible. CMOS ...

Page 4

TOP100-4 TOPSwitch Family Functional Description (cont.) The first time V reaches the upper C threshold, the high-voltage current source is turned off and the PWM modulator and output transistor are activated, as shown in Figure 5(a). During normal operation (when ...

Page 5

DRAIN 0 V OUT 0 I OUT Figure 6. Typical Waveforms for (1) Normal Operation, (2) Auto-restart, (3) Latching Shutdown, and (4) Power Down Reset. Shutdown/Auto-restart ...

Page 6

TOP100-4 General Circuit Operation Primary Feedback Regulation The circuit shown in Figure simple bias supply using the TOP100. This flyback power supply employs primary-side regulation from a transformer bias winding. This approach is ...

Page 7

BR1 C1 200 200 0.1 F DRAIN F1 SOURCE 3.15 A CONTROL L U1 TOP101YAI N J1 Figure 8. Schematic Diagram 100/110 VAC Input Power Supply Utilizing the ...

Page 8

TOP100-4 BR1 200 CIRCUIT PERFORMANCE: Load Regulation - ±0.2% C6 0.1 F Meets CISPR-22 Class Figure 9. Schematic Diagram 100/110 VAC Input Power Supply Utilizing ...

Page 9

General Circuit Operation (cont.) Boost PFC Pre-regulator TOPSwitch can also be used as a fixed frequency, discontinuous mode boost pre-regulator to improve Power Factor and reduce Total Harmonic Distortion (THD) for applications such as power supplies and electronic ballasts. The ...

Page 10

TOP100-4 DRAIN Voltage ............................................ -0.3 to 350 V CONTROL Voltage ..................................... - 0 Storage Temperature ...................................... -65 to 125 C (2) Operating Junction Temperature ................. -40 to 150 C (3) Lead Temperature ................................................. 260 C Specification ...

Page 11

Specification Symbol SHUTDOWN/AUTO-RESTART (cont.) UV Lockout Threshold Voltage Auto-restart Hysteresis Voltage Auto-restart Duty Cycle Auto-restart Frequency CIRCUIT PROTECTION Self-protection I Current Limit LIMIT Leading Edge t Blanking Time LEB Current Limit t Delay ILD Thermal Shutdown Temperature Latched Shutdown I ...

Page 12

TOP100-4 Specification Symbol OUTPUT ON-State R Resistance DS(ON) OFF-State I Current DSS Breakdown BV Voltage DSS Rise t Time r Fall t Time f SUPPLY DRAIN Supply Voltage Shunt Regulator V Voltage C(SHUNT) Shunt Regulator Temperature Drift I CD1 CONTROL ...

Page 13

Specification Symbol LOW INPUT VOLTAGE OPERATION (See Note 3) DRAIN Supply Voltage CONTROL Pin Charging Current Auto-restart Duty Cycle Auto-restart Frequency NOTES: 1. For specifications with negative values, a negative temperature coefficient corresponds to an increase in magnitude with increasing ...

Page 14

TOP100 90% DRAIN VOLTAGE 10 Figure 12. TOPSwitch Duty Cycle Measurement. DRAIN SOURCE CONTROL TOPSwitch NOTE: This test circuit is not applicable for current limit or output characteristic measurements. Figure 14. TOPSwitch General ...

Page 15

BENCH TEST PRECAUTIONS FOR EVALUATION OF ELECTRICAL CHARACTERISTICS The following precautions should be followed when testing TOPSwitch by itself outside of a power supply. The schematic shown in Figure 14 is suggested for laboratory testing of TOPSwitch. When the DRAIN ...

Page 16

TOP100-4 Typical Performance Characteristics (cont.) OUTPUT CHARACTERISTICS 5 T CASE = CASE = 100 Drain Voltage ( 7/96 Scaling Factors: TOP104 1.00 TOP103 0.87 TOP102 0.67 ...

Page 17

Y03A mm DIM inches .460-.480 11.68-12. .400-.415 10.16-10.54 C .236-.260 5.99-6.60 6.10 - REF. D .240 - REF. 13.21-14.22 E .520-.560 .028-.038 .71-. .045-.055 1.14-1.40 H .090-.110 2.29-2.79 4.19-4.70 J .165-.185 1.14-1.40 K .045-.055 2.41-2.92 L ...

Page 18

TOP100 7/96 NOTES ...

Page 19

NOTES TOP100 7/96 ...

Page 20

TOP100-4 Power Integrations reserves the right to make changes to its products at any time to improve reliability or manufacturability. Power Integrations does not assume any liability arising from the use of any device or circuit described herein, nor does ...

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