KIA494AP KEC(Korea Electronics), KIA494AP Datasheet

KIA494AP

Manufacturer Part Number

KIA494AP

Description

Voltage-mode PWM controller

Manufacturer

KEC(Korea Electronics)

Datasheet

1.KIA494AP.pdf (6 pages)

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Download datasheet (111Kb)

1999. 2. 20

Voltage-Mode PWM Controller IC

the functions required in the construction of a pulse-width- modulation

control circuit. Designed primarily for power supply control, this device

offers the systems engineer the flexibility to tailor the power supply control

circuitry to a specific application.

oscillator, a dead-tme control(DTC) comparator, a pulse-steering control

flip-flop, a 5-V, 5%-precision requlator, and output-control circuits.

to V

provides approximately 5% dead time.

reference output and providing a sawtooth input to CT, or it may drive

the common circuits in synchronous multiple-rail power supplies.

emitter-follower output capability. The KIA494AP/AF provides for push-

pull or single-ended output operation, which may be selected through

the output-control function.

being pulsed twice during push-pull operation.

FEATURES

MAXIMUM RATINGS (Ta=25 )

Supply Voltage

Error Amplifier Input Voltage

Collector Output Voltage

Collector Output Current

Power

Consumption

Operating Temperature

Storage Temperature

Completed PWM Power Control Circuitry.

Uncommitted Outputs for 200mA Sink or Source Current.

Output Control Selects Single-Ended or Push-Pull Operation.

Internal Circuitry Prohibits Double Pulse at Either Output.

Variable Dead Time Provides Control Over Total Range.

Internal Regulator Provides a Stable 5V Reference Supply With 5% Tolerance.

Circuit Architecture Allows Easy Synchronization.

The KIA494AP/AF incorporates on a single monolithic chip all

The KIA494AP/AF contains two error amplifiers, an on-chip adjustable

The error amplifiers exhibit a common-mode voltage range from -0.3V

The on-chip oscillator may be bypassed by terminating RT to the

The uncommitted output transistors provide either common- emitter or

The architecture of this device prohibits the possibility of either output

-2V. The dead-time control comparator has a fixed offset that

ITEM

KIA494AP

KIA494AF

Revision No : 0

SEMICONDUCTOR

TECHNICAL DATA

SYMBOL

opr

stg

RATING

-65 150

-40 85

250

750

400

+0.3

UNIT

FUNCTION TABLE

OUTPUT CTRL

BIPOLAR LINEAR INTEGRATED CIRCUIT

INPUT TO

=GND

ref

KIA494AP/AF

Single-ended or paralled output

Normal push-pull operation

FLP-16

DIP-16

OUTPUT FUNCTION

DIM

DIM MILLIMETERS

MILLIMETERS

0.25+0.1/-0.05

0.15+0.1/-0.05

0.20+0.1/-0.05

19.3 0.2

6.45 0.2

1.52 0.1

0.46 0.1

0.50 MIN

9.88 0.2

3.94 0.2

6.00 0.3

1.63 0.2

0.65 0.2

3.8 0.3

3.3 0.3

0.4 0.1

0 - 15

2.54

7.62

1.27

+ _

1/6

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KIA494AP Summary of contents

Page 1

... Designed primarily for power supply control, this device offers the systems engineer the flexibility to tailor the power supply control circuitry to a specific application. The KIA494AP/AF contains two error amplifiers, an on-chip adjustable oscillator, a dead-tme control(DTC) comparator, a pulse-steering control flip-flop, a 5-V, 5%-precision requlator, and output-control circuits. ...

Page 2

... Oscillation Frequency Set Value Oscillation Frequency Setting Accuracy Frequency Input Stability Frequency Temp. Change PAUSE PERIOD ADJUSTING UNIT CHARACTERISTIC Input Bias Current Max. Duty (Each Output Stage) Input Threshold Voltage 1 Input Threshold Voltage 2 1999 Revision KIA494AP/AF SYMBOL MIN ...

Page 3

... Output Voltage Rise Time (Emitter follower) Output Voltage Fall Time (Emitter grounded) L State Output Control Input Operating Current H State CURRENT CONSUMPTION (TOTAL) CHARACTERISTIC Standby Current Average Supply Current 1999 Revision KIA494AP/AF SYMBOL TEST CONDITION V V PIN 3=2. PIN 3=2. PIN 3=2 ...

Page 4

... BECOMES SINGLE MODE AT "L" AND PUSH-PULL MODE AT "H" OPERATING WAVEFORM C TERMINAL T VOLTAGE 3-PIN TERMINAL VOLTAGE DEAD TIME CONTROL INPUT FLIP-FLOP CLOCK INPUT FLIP-FLOP Q FLIP-FLOP Q OUTPUT Q1 EMITTER OUTPUT Q2 EMITTER OUTPUT CONTROL INPUT 1999 Revision KIA494AP/AF OUTPUT CONTROL 13 Q FLIP- FLOP - P.W.M LOW SUPPLY VOLTAGE + PROTECTIVE INV-INPUT ...

Page 5

... Each Output Circuit TEST CIRCUIT NOTE A. C includes probe and jig capacitance. L Emitter-Follower Configuration Test Circuit and Waveform Each Output Circuit TEST CIRCUIT NOTE A. C includes probe and jig capacitance. L 1999 Revision KIA494AP/AF V =15V DTC ...

Page 6

... TIMING RESISTANCE CE(sat) 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0 100 COLLECTOR CURRENT 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2 SUPPLY VOLTAGE V 1999 Revision KIA494AP/ =15V CC 50k 200k 500k 1. 200 300 (mA ( PHASE - f VOL 120 V 110 100 R =2. VOL ...

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