Datenblatt-Suchmaschine für elektronische Bauteile
Selected language     German  ▼
Bauteilbezeichnung
         Beschreibung


TC170CPE Datenblatt(Datasheet) 7 Page - TelCom Semiconductor, Inc

Teile-Nr. TC170CPE
Beschreibung  CMOS CURRENT MODE PWM CONTROLLER
Download  8 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Hersteller  TELCOM [TelCom Semiconductor, Inc]
Homepage  http://www.telcom-semi.com
Logo 

   
 7 page
background image
4-125
TELCOM SEMICONDUCTOR, INC.
7
6
5
4
3
1
2
8
CMOS CURRENT MODE
PWM CONTROLLER
TC170
Figure 6 . Oscillator Circuit
Figure 7.
Oscillator Frequency vs Oscillator Resistance
where: RO = Oscillator Resistor (kΩ)
CO = Oscillator Capacitor (pF)
TD = Output Dead Time (sec)
Maximum possible duty cycle is set by the dead time.
50
45
40
35
30
25
20
15
10
5
0
20
40
60
80 100 120 140 160 180 200
TA = +25°C
250pF
500pF
OSCILLATOR FREQUENCY (kHz)
750pF
1000pF
2.3V 4.3V
I
CHARGE
2.3V
RO
8
CO
9
1 mA
DISCHARGE
CURRENT
SYNC
10
VDD
2.3V
PIN 8
PIN 10
1
ON-TIME
OUTPUT DEAD TIME (TD)
+
RO
FO
TD =
Oscillator Frequency and Output Dead Time
The oscillator frequency for RO = 24kΩ and
CO = 1000pF is:
where: RO = Oscillator Resistor (Ω)
CO = Oscillator Capacitor (F)
FO = Oscillator Frequency (Hz)
The oscillator resistor can range from 5 k
Ω to 50 kΩ.
Oscillator capacitor can range from 250 pF to 1000 pF.
Figure 7 shows typical operation for various resistance and
capacitance values.
During transitions between the two outputs, simulta-
neous conduction is prevented. Oscillator fall time controls
the output off, or dead time (Figure 6).
Dead time is approximately:
]
[
FO =
1.27
2800
CO
ROCO
RO
2C
O
CO + 150 × 10
–12
2000 [CO]
1 –
( )
2.3
RO




Html Pages

1  2  3  4  5  6  7  8 


Datasheet Download



verwandte Bauteile- Teilenummer

TeilenummerBauteilebeschreibungHtml ViewHersteller
TC18C46-1CMOS CURRENT MODE PWM CONTROLLER 1 2 3 4 5 MoreTelCom Semiconductor, Inc
TC170CMOS Current Mode PWM Controller 1 2 3 4 5 MoreMicrochip Technology
AN4129Green Current Mode PWM Controller FAN7601 1 2 3 4 5 MoreFairchild Semiconductor
UC1846Current Mode PWM Controller 1 2 3 4 5 MoreTexas Instruments
SG1844CURRENT MODE PWM CONTROLLER 1 2 3 4 5 MoreMicrosemi Corporation
UC1848Average Current Mode PWM Controller 1 2 3 4 5 MoreTexas Instruments
SG1846CURRENT MODE PWM CONTROLLER 1 2 3 4 5 MoreMicrosemi Corporation
AZ3842CURRENT MODE PWM CONTROLLER 1 2 3 4 5 MoreAdvanced Analog Technology, Inc.
HV9605High Voltage Current Mode PWM Controller for ISDN Equipment 1 2 3 4 5 Supertex, Inc
UC184XACURRENT MODE PWM CONTROLLER 1 2 3 4 5 MoreMicrosemi Corporation

Link URL

War ALLDATASHEET hilfreich?  [ Spenden ]  

Über ALLDATASHEET   |   Werbung   |   Kontakt   |   Privatsphäre und Datenschutz   |   Lesezeichen hinzufügen   |   Linktausch   |   Hersteller
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  , Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp  |   Russian : Alldatasheetru.com
Korean : Alldatasheet.co.kr   |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com  |   Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl