数据搜索系统,热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

TL5001G-D08-T 数据表(PDF) 7 Page - Unisonic Technologies

部件名 TL5001G-D08-T
功能描述  PULSE-WIDTH-MODULATION CONTROL CIRCUIT
Download  13 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  UTC [Unisonic Technologies]
网页  http://www.utc-ic.com
标志 UTC - Unisonic Technologies

TL5001G-D08-T 数据表(HTML) 7 Page - Unisonic Technologies

Back Button TL5001G-D08-T Datasheet HTML 3Page - Unisonic Technologies TL5001G-D08-T Datasheet HTML 4Page - Unisonic Technologies TL5001G-D08-T Datasheet HTML 5Page - Unisonic Technologies TL5001G-D08-T Datasheet HTML 6Page - Unisonic Technologies TL5001G-D08-T Datasheet HTML 7Page - Unisonic Technologies TL5001G-D08-T Datasheet HTML 8Page - Unisonic Technologies TL5001G-D08-T Datasheet HTML 9Page - Unisonic Technologies TL5001G-D08-T Datasheet HTML 10Page - Unisonic Technologies TL5001G-D08-T Datasheet HTML 11Page - Unisonic Technologies Next Button
Zoom Inzoom in Zoom Outzoom out
 7 / 13 page
background image
TL5001
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
7 of 13
www.unisonic.com.tw
QW-R103-016.E
DETAILED DESCRIPTION(Cont.)
DEAD TIME CONTORL (DTC)
DTC provides a means of limiting the output-switch duty cycle to a value less than 100%, which is critical for boost
and flyback converters. A current source generates a reference current (IDT) at DTC that is nominally equal to the
current at the oscillator timing terminal, RT. Connecting a resistor between DTC and GND generates a dead-time
reference voltage (VDT), which the PWM/DTC comparator compares to the oscillator triangle wave as described in
the previous section. Nominally, the maximum duty cycle is 0% when VDT is 0.7V or less and 100% when VDT is
1.3V or greater. Because the triangle wave amplitude is a function of frequency and the source impedance of RT is
relatively high(1250Ω),choosing RDT for a specific maximum duty cycle, D, is accomplished using the following
equation and the voltage limits for the frequency in question as found in Fig. 11(VOSC(MAX) and VOSC(MIN) are the
maximum and minimum oscillator levels):
RDT=(RT +1250)[D(VOSC(MAX)-VOSC(MIN))+VOSC(MIN)]
Where
RDT and RT are in ohms, D in decimal
Soft start can be implemented by paralleling the DTC resistor with a capacitor (CDT) as shown in Fig. 2. During soft
start, the voltage at DTC is derived by the following equation:
VDT≈IDTRDT(1-e
(-t/RDTCDT))
UTC
TL5001
RDT
CDT
DTC
6
Fig. 2 Soft- Start Circuit
If the dc-to-dc converter must be in regulation within a specified period of time, the time constant, RDTCDT,
should be t0/3 to t0/5.The UTC TL5001 remains off unit VDT≈0.7V, the minimum ramp value. CDT is discharged
every time UVLO or SCP becomes active.
UNDERVOLTAGE-LOCKOUT (UVLO) PROTECTION
The undervoltage-lockout circuit turns the output transistor off and resets the SCP latch whenever the supply
voltage drops too low (approximately 3V at 25℃) for proper operation. A hysteresis voltage of 200mV eliminates
false triggering on noise and chattering.


类似零件编号 - TL5001G-D08-T

制造商部件名数据表功能描述
logo
Unisonic Technologies
TL5001G-D08-T UTC-TL5001G-D08-T Datasheet
312Kb / 13P
   PULSE-WIDTH-MODULATION CONTROL CIRCUITS
More results

类似说明 - TL5001G-D08-T

制造商部件名数据表功能描述
logo
Texas Instruments
TL594 TI-TL594_07 Datasheet
642Kb / 19P
[Old version datasheet]   PULSE-WIDTH-MODULATION CONTROL CIRCUIT
TL594 TI-TL594_10 Datasheet
641Kb / 19P
[Old version datasheet]   PULSE-WIDTH-MODULATION CONTROL CIRCUIT
logo
E-Tech Electronics LTD
TL594 ETL-TL594 Datasheet
346Kb / 9P
   PULSE-WIDTH-MODULATION CONTROL CIRCUIT
logo
Motorola, Inc
SG3526 MOTOROLA-SG3526 Datasheet
172Kb / 10P
   PULSE WIDTH MODULATION CONTROL CIRCUIT
logo
ON Semiconductor
SG3526 ONSEMI-SG3526 Datasheet
172Kb / 10P
   PULSE WIDTH MODULATION CONTROL CIRCUIT
1996 REV 2
logo
Texas Instruments
TL5002 TI-TL5002 Datasheet
233Kb / 14P
[Old version datasheet]   PULSE-WIDTH-MODULATION CONTROL CIRCUIT
logo
KODENSHI_AUK CORP.
KK494A KODENSHI-KK494A Datasheet
464Kb / 5P
   Pulse-Width-Modulation Control Circuit
logo
Unisonic Technologies
TL594 UTC-TL594_09 Datasheet
335Kb / 9P
   PULSE-WIDTH-MODULATION CONTROL CIRCUIT
TL594 UTC-TL594 Datasheet
281Kb / 8P
   PULSE-WIDTH-MODULATION CONTROL CIRCUIT
TL594 UTC-TL594_15 Datasheet
380Kb / 9P
   PULSE-WIDTH-MODULATION CONTROL CIRCUIT
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13


数据表 下载

Go To PDF Page


链接网址




隐私政策
ALLDATASHEETCN.COM
ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : 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  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com