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부품번호 | S494P 기능 |
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기능 | Pulse Width Modulation | ||
제조업체 | AUK corp | ||
로고 | |||
전체 8 페이지수
Semiconductor
S494P
Pulse Width Modulation
Description
The S494 is a monolithic integrated circuit which includes all the necessary building blocks
for the design of pulse width modulate(PWM) switching power supplies, including push-pull,
bridge and series configuration. The device can operate at switching frequencies between
1KHz and 300KHz and output voltage up to 40V. The S494 is specified over an operating
temperature range of -40℃to85℃.
Features
• Uncommitted output transistors capable of 200mA source or sink
• Internal protection from double pulsing of out-puts with narrow pulse widths or with
supply voltages bellows specified limits
• Easily synchronized to other circuits
• Dead time control comparator
• Output control selects single-ended or push-pull operation
Ordering Information
Type NO.
S494P
Marking
S494P
Package Code
DIP-16
Outline Dimensions
unit : mm
PIN Connections
1. Non-INV Input
2. INV Input
3. Feed-Back
4. Dead-Time Control
5. CT
6. RT
7. GND
8. C1
9. E1
10. E2
11. C2
12. Vcc
13 Output Control
14. Ref Out
15. INV-Input
16. Non-INV Input
KSI-L010-000
1
Output AC Characteristic
Characteristic
Symbol
Rise Time
Common Emitter
Emitter Follower
tr -
Fall Time
Common Emitter
Emitter Follower
tf
-
Test Condition
S494P
Min. Typ. Max.
- 100 200
- 100 200
- 25 100
- 40 100
Unit
ns
Block Diagram
V c c 12
R e f O u t 14
G ND 7
RT 6
CT 5
De a d-T i me
Control
4
Non -i n v
Input
In v -In pu t
1
2
Non -i n v
In pu t 16
In v -In pu t 15
Fe e d-Bac k 3
Reference
Regulator
Osc
De a d T i me
CO MP A R A T O R
+
-
EA1
+
-
+
-
PWM
CO MP A R A T O R
EA2
+
-
13 O u t pu t Con t r ol
T F.F
8 C1
9 E1
11 C2
10 E2
KSI-L010-000
4
4페이지 S494P
APPLICATION CIRCUIT
Fig. 6 Output Connections for Single-Ended
and Push-Pull Configurations
Fig. 7 Error Amplifier Sensing Techniques
OUTPUT
CONTROL
Q1 8 C1
9 E1
Q2 11 C2
QC
1 TO 500 mA(MAX)
0 < V OC < 4V
10 E2
QE
SINGLE-ENDED CONFIGURATION
Vo
TO OUTPUT
VOLTAGE OF
R1 SYSTEM
1(16) +
V REF
2(15) - ERROR
AMP
3
R2 POSITIVE OUTPUT
V OLTAGE
2.4V<VOC<VREF
OUTPUT
CONTROL
Q1 8
9
Q2 11
10
C1
250 mA(MAX)
E1
C2
250 mA(MAX)
E2
PUSH-PULL CONFIGURATION
V REF
1(16)
+ R2
3 2(15)
-
NEGATIVE OUTPUT
V OLTAGE
V o = -V REF R1
R2
R1
Vo
TO OUTPUT
VOLTAGE OF
SYSTEM
Fig. 8 Slaving Tow or More Control Circuits
Fig. 9Error Amplifier and Current Limit
Sense Amplifier Output Circuits
14 V REF
6 RT
5
CT
MASTER
RT CT 14 V REF
V cc
V REF
TO REMAINDER
OF ERROR
AMPLIFIER
CIRCUIT
6 RT
5 CT
SLAV E
(ADDITIONAL
CIRCUITS)
0.6mA
TO REMAINDER
OF ERROR
AMPLIFIER
CIRCUIT
TO COMPENSATION
PWM COMPARATOR
INPUT
KSI-L010-000
7
7페이지 | |||
구 성 | 총 8 페이지수 | ||
다운로드 | [ S494P.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
S494 | Pulse Width Modulation | AUK corp |
S494D | Fast Soft Recovery Rectifier | Vishay Telefunken |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |