TK75005MCMG TOKO [TOKO, Inc], TK75005MCMG Datasheet

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TK75005MCMG

Manufacturer Part Number
TK75005MCMG
Description
LOW-COST FLEXIBLE PWM CONTROLLER
Manufacturer
TOKO [TOKO, Inc]
Datasheet
January 1999 TOKO, Inc.
FEATURES
DESCRIPTION
The TK75005 is an 8-pin PWM controller suitable for both
voltage-mode and current-mode control. It also has
advanced features not available in controllers with a higher
pin count. One such feature is a sawtooth current flowing
out of the feedback pin (FB), which provides a slope
compensation ramp (in current mode applications) in
proportion to the resistance terminating that FB pin.
The TK75005 offers the same features as the TK75003
with the addition of the Error Amplifier and the Overvoltage
Protection (OVP) functions, and the deletion of the
Overcurrent Frequency Reduction feature.
This PWM has features similar to the UC3842 (please
refer to UC3842 Comparison Section).
PACKAGE CODE
D: DIP-8
M: SOP-8
Package Code
INFORMATION
Can Be Used For Power Factor Correction/Line
Harmonics Reduction to Meet IEC1000-3-2
Requirements
Maximum Duty Ratio 89% (typ.)
Low Standby Current for Current-Fed Start-Up
Current-Mode or Voltage-Mode Control
Internal User-Adjustable Slope Compensation
Pulse-by-Pulse Current Limiting
ADVANCED
ORDERING INFORMATION
TK75005
TEMPERATURE RANGE
C: -40 TO 80 C
Tape/Reel Code
Temp. Range
TAPE/REEL CODE
TL: Tape Left
MG: Magazine
LOW-COST FLEXIBLE PWM CONTROLLER
APPLICATIONS
OVP
FB
C T
Power Factor Correction Converters
Off-Line Power Supplies
Industrial Power Supplies
Off-Line Battery Charger
I CT
OVERVOLTAGE
SOP-8
DETECTOR
DIP-8
1.02 V
2.6 V
DETECTOR
CURRENT
CONTROL
1.975 mA
175 µA
I CHG
I DS
COMPENSATION
SLOPE
BLOCK DIAGRAM
OSCILLATOR
G M STAGE
TK75005
GND
GND
DRV
OVP
DRV
OVP
REFERENCE
C T
BANDGAP
f CLK
C T
PWM LATCH
S
R
Q
EA OUT
8.0 V
TK75005
GND
UVLO
10.0 V
V CC
2.5 V
Page 1
V CC
EA OUT
EA IN
F B
V CC
EA OUT
EA IN
F B
DRV
EA IN

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TK75005MCMG Summary of contents

Page 1

ADVANCED INFORMATION FEATURES Can Be Used For Power Factor Correction/Line Harmonics Reduction to Meet IEC1000-3-2 Requirements Maximum Duty Ratio 89% (typ.) Low Standby Current for Current-Fed Start-Up Current-Mode or Voltage-Mode Control Internal User-Adjustable Slope Compensation Pulse-by-Pulse Current Limiting DESCRIPTION The ...

Page 2

TK75005 ABSOLUTE MAXIMUM RATINGS Supply Voltage (Low Impedance) ............................ 18 V Supply Voltage (I < 30 mA) ...................... Self Limiting CC Power Dissipation (Note 1) ................................ 800 mW Output Energy ........................................................... and FB Pins ........................................................ 10 V ...

Page 3

TK75005 ELECTRICAL CHARACTERISTICS (CONT.) Test Conditions unless otherwise specified ...

Page 4

TK75005 DRV GND OVP C T TYPICAL PERFORMANCE CHARACTERISTICS SUPPLY CURRENT vs. SUPPLY VOLTAGE 20 16 DEVICE ON 12 0.8 STANDBY 0.4 0 (V) SUPPLY CURRENT vs. FREQUENCY AT DRV 50 40 ...

Page 5

DRIVE PIN (DRV) This pin drives the external MOSFET with a totem pole output stage capable of sinking or sourcing a peak current of about standby mode, the DRV pin can sink about 5 mA while keeping ...

Page 6

TK75005 The TK75005 is intended for use as a highly flexible primary-side PWM controller. The TK75005 is much like the TK75003 with the addition of an error amplifier stage and an overvoltage comparator, and the deletion of the ...

Page 7

BOOST POWER FACTOR CORRECTOR APPLICATION CIRCUIT Figure 7 shows a universal-input, 100 W boost power factor corrector application circuit. The control technique is called “current-clamped control.” Both the control technique and the application circuit with waveforms are described in the ...

Page 8

TK75005 APPLICATIONS INFORMATION (CONT.) Select for 4.3 kohms 7 Resistance of current-sense resistor CCD SC(PK) 7 Select for ...

Page 9

DIP-8 1 9.5 e 2.54 Dimensions are shown in millimeters Tolerance: x.x = 0.2 mm (unless otherwise specified) SOP 4.89 e 0.42 1.27 0.1 l 0.12 Dimensions are shown in millimeters Tolerance: x.x = 0.2 ...

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