công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

BZX100A bảng dữ liệu(PDF) 10 Page - Linear Technology

tên linh kiện BZX100A
Giải thích chi tiết về linh kiện  100VIN Micropower Isolated Flyback Converter with 150V/260mA Switch
Download  24 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  LINER [Linear Technology]
Trang chủ  http://www.linear.com
Logo LINER - Linear Technology

BZX100A bảng dữ liệu(HTML) 10 Page - Linear Technology

Back Button BZX100A Datasheet HTML 6Page - Linear Technology BZX100A Datasheet HTML 7Page - Linear Technology BZX100A Datasheet HTML 8Page - Linear Technology BZX100A Datasheet HTML 9Page - Linear Technology BZX100A Datasheet HTML 10Page - Linear Technology BZX100A Datasheet HTML 11Page - Linear Technology BZX100A Datasheet HTML 12Page - Linear Technology BZX100A Datasheet HTML 13Page - Linear Technology BZX100A Datasheet HTML 14Page - Linear Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 24 page
background image
LT8300
10
8300f
applicaTions inForMaTion
Selecting Actual RFB Resistor Value
The LT8300 uses a unique sampling scheme to regulate
the isolated output voltage. Due to the sampling nature,
the scheme contains repeatable delays and error sources,
whichwillaffecttheoutputvoltageandforceare-evaluation
of the RFB resistor value. Therefore, a simple two-step
process is required to choose feedback resistor RFB.
Rearrangement of the expression for VOUT in the Output
Voltage section yields the starting value for RFB:
RFB =
NPS • VOUT + VF
(
)
100µA
VOUT = Output voltage
VF = Output diode forward voltage = ~0.3V
NPS = Transformer effective primary-to-secondary
turns ratio
Power up the application with the starting RFB value and
other components connected, and measure the regulated
output voltage, VOUT(MEAS). The final RFB value can be
adjusted to:
RFB(FINAL) =
VOUT
VOUT(MEAS)
•RFB
OncethefinalRFBvalueisselected,theregulationaccuracy
from board to board for a given application will be very
consistent, typically under ±5% when including device
variation of all the components in the system (assuming
resistor tolerances and transformer windings matching
within ±1%). However, if the transformer or the output
diode is changed, or the layout is dramatically altered,
there may be some change in VOUT.
Output Power
Aflybackconverterhasacomplicatedrelationshipbetween
the input and output currents compared to a buck or a
boostconverter.Aboostconverterhasarelativelyconstant
maximum input current regardless of input voltage and a
buck converter has a relatively constant maximum output
current regardless of input voltage. This is due to the
continuous non-switching behavior of the two currents. A
flybackconverterhasbothdiscontinuousinputandoutput
currentswhichmakeitsimilartoanon-isolatedbuck-boost
converter. The duty cycle will affect the input and output
currents, making it hard to predict output power. In ad-
dition, the winding ratio can be changed to multiply the
output current at the expense of a higher switch voltage.
The graphs in Figures 1 to 4 show the typical maximum
output power possible for the output voltages 3.3V, 5V,
12V, and 24V. The maximum output power curve is the
calculated output power if the switch voltage is 120V dur-
ing the switch-off time. 30V of margin is left for leakage
inductance voltage spike. To achieve this power level at
a given input, a winding ratio value must be calculated
to stress the switch to 120V, resulting in some odd ratio
values. The curves below the maximum output power
curve are examples of common winding ratio values and
the amount of output power at given input voltages.
One design example would be a 5V output converter with
a minimum input voltage of 36V and a maximum input
voltage of 72V. A six-to-one winding ratio fits this design
example perfectly and outputs equal to 2.44W at 72V but
lowers to 1.87W at 36V.
The following equations calculate output power:
POUT = η• VIN •D •ISW(MAX) • 0.5
η = Efficiency = 85%
D
= DutyCycle =
VOUT + VF
(
)•NPS
VOUT + VF
(
)•NPS + VIN
ISW(MAX) = Maximum switch current limit = 260mA


Số phần tương tự - BZX100A

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
NXP Semiconductors
BZX100A NXP-BZX100A Datasheet
192Kb / 10P
   Single Zener diode
Rev. 01-30 May 2007
logo
Nexperia B.V. All right...
BZX100A NEXPERIA-BZX100A Datasheet
1Mb / 10P
   Single Zener diode
Rev. 01 - 30 May 2007
More results

Mô tả tương tự - BZX100A

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
Analog Devices
LT8300 AD-LT8300 Datasheet
1Mb / 24P
   100VIN Micropower Isolated Flyback Converter with 150V/260mA Switch
logo
Linear Technology
LT8300 LINER-LT8300_15 Datasheet
313Kb / 24P
   100VIN Micropower Isolated Flyback Converter with 150V/260mA Switch
LT8303 LINER-LT8303 Datasheet
1Mb / 24P
   100VIN Micropower Isolated Flyback Converter with 150V/450mA Switch
LT8304 LINER-LT8304 Datasheet
343Kb / 6P
   Micropower No-Opto Isolated Flyback Converter with 150V/2A Switch
LT8301 LINER-LT8301 Datasheet
440Kb / 6P
   42VIN Micropower Isolated Flyback Converter with 65V/1.2A Switch
LT8301 LINER-LT8301_15 Datasheet
269Kb / 24P
   42VIN Micropower No-Opto Isolated Flyback Converter with 65V/1.2A Switch
logo
Analog Devices
LT8301 AD-LT8301 Datasheet
1Mb / 24P
   42VIN Micropower No-Opto Isolated Flyback Converter with 65V/1.2A Switch
LT8302 AD-LT8302 Datasheet
1Mb / 26P
   42VIN Micropower No-Opto Isolated Flyback Converter with 65V/3.6A Switch
logo
Linear Technology
LT8302 LINER-LT8302_15 Datasheet
420Kb / 26P
   42VIN Micropower No-Opto Isolated Flyback Converter with 65V/3.6A Switch
logo
Analog Devices
ADPL54203 AD-ADPL54203 Datasheet
925Kb / 34P
   40VIN Micropower No-Opto Isolated Flyback Converter with 60V/3.4A Switch
Rev. 0
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24


bảng dữ liệu tải về

Go To PDF Page


Link URL




Chính sách bảo mật
ALLDATASHEET.VN
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
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