- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄374169 > CS7054YN14 (ZF Electronics Corporation) CAT6 SOL PC WHI PLE 50FT PLENUM SOLID PATCH CORD PDF資料下載
參數(shù)資料
| 型號： | CS7054YN14 |
| 廠商： | ZF Electronics Corporation |
| 英文描述： | CAT6 SOL PC WHI PLE 50FT PLENUM SOLID PATCH CORD |
| 中文描述： | 場效應(yīng)低邊PWM控制器 |
| 文件頁數(shù)： | 4/6頁 |
| 文件大小： | 143K |
| 代理商： | CS7054YN14 |
C
4
Application Information: continued
in the supply voltage. The duty cycle is varied based upon
the input voltage and supply voltage by the following
equation:
Duty Cycle = 100%
′
An internal DC voltage equal to:
V
DC
= (1.683
′
V
CTL
) + (V
VALLEY
)
is compared to the oscillator voltage to produce the com-
pensated duty cycle. The transfer is set up so that at V
CC
=
14V the duty will equal V
CTL
divided by V
REG
. For exam-
ple at V
CC
= 14V, V
REG
= 5V and V
CTL
= 2.5V, the duty
cycle would be 50% at the output. This would place a 7V
average voltage across the load. If V
CC
then drops to 10V,
the IC would change the duty cycle to 70% and hence keep
the average load voltage at 7V.
Figure 1: Voltage Compensation
5V Linear Regulator
There is a 5V, 5mA linear regulator available at the V
REG
lead for external use. This voltage acts as a reference for
many internal and external functions. It has a drop out of
approximately 1.5V at room temperature and does not
require an external capacitor for stability.
Current Sense and Timer
The IC differentially monitors the load current on a cycle
by cycle basis at the I
SENSE+
and I
SENSE-
leads. The differen-
tial voltage across these two leads is amplified internally
and compared to the voltage at the I
ADJ
lead. The gain, A
V
,
is set internally and externally by the following equation:
A
V
=
=
The current limit (I
LIM
) is set by the external current sense
resistor (R
SENSE
) placed across the I
SENSE+
and I
SENSE-
ter-
minals and the voltage at the I
ADJ
lead.
I
LIM
=
′
The R
CS
resistors and C
CS
components form a differential
low pass filter which filters out high frequency noise gen-
erated by the switching of the external MOSFET and the
associated lead noise. R
CS
also forms an error term in the
gain of the I
LIM
equation because the I
SENSE+
and I
SENSE-
leads are low impedance inputs thereby creating a good
current sensing amplifier. Both leads source 50μA while
the chip is in run mode. R
CS
should be much less than 1000
to minimize error in the I
LIM
equation. I
ADJ
should be
biased between 1V and 4V.
When the current through the external MOSFET exceeds
I
LIM
, an internal latch is set and the output pulls the gate of
the MOSFET low for the remainder of the oscillator cycle
(fault mode). At the start of the next cycle, the latch is reset
and the IC reverts back to run mode until another fault
occurs. If a number of faults occur in a given period of
time, the IC òtimes outó and disables the MOSFET for a
long period of time to let it cool off. This is accomplished
by charging the C
FLT
capacitor each time an over current
condition occurs. If a cycle goes by with no overcurrent
fault occurring, an even smaller amount of charge will be
removed from C
FLT
. If enough faults occur together, even-
tually C
FLT
will charge up to 2.4V and the fault latch will
be set. The fault latch will not be reset until the C
FLT
dis-
charges to 0.6V. This action will continue indefinitely if the
fault persists.
The off time and on time are set by the following:
Off Time = C
FLT
′
2.4V - 0.6V
4.5μA
V
I(ADJ)
R
SENSE
(1000 + R
CS
)
37000
37000
1000 + R
CS
V
I(ADJ)
I
SENSE+
- I
SENSE-
120%
100%
80%
60%
40%
20%
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
CTL Voltage (% of V
REG
)
D
V
CC
= 8V
V
CC
= 14V
V
CC
= 16V
2.8
′
V
CTL
V
CC
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CS8101YT5 | Micropower 5V, 100mA Low Dropout Linear Regulator with RESET and ENABLE |
| CS8101 | Micropower 5V, 100mA Low Dropout Linear Regulator with RESET and ENABLE |
| CS8101YTVA5 | Multicored, Cable, Length U-1000 Feet RoHS Compliant: Yes |
| CS8101YTHA5 | Hook-Up Wire; Conductor Size AWG:20; No. Strands x Strand Size:10 x 30; Jacket Color:Black; Approval Bodies:UL, CSA; Approval Categories:UL AWM Style 1015, CSA Type TEW, JQA-F-, Passes VW-1 Flame Test; Conductor Material:Copper RoHS Compliant: Yes |
| CS8101YDWF20 | Micropower 5V, 100mA Low Dropout Linear Regulator with RESET and ENABLE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CS7055AT | 功能描述:8位微控制器 -MCU CS7055AT RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| CS7055ATT | 功能描述:8位微控制器 -MCU CS7055ATT RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| CS7056AT | 功能描述:8位微控制器 -MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| CS7056ATT | 功能描述:8位微控制器 -MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| CS706015Y | 功能描述:THERMOSTAT 60 DEG C NO FASTON RoHS:是 類別:過電壓，電流，溫度裝置 >> 溫度調(diào)節(jié)器 系列:R53 標(biāo)準(zhǔn)包裝:10 系列:3150 電路:- 開關(guān)溫度:- 封裝/外殼:圓柱形，帶安裝法蘭 安裝類型:底座安裝 其它名稱:3150 002302403150 00230240-ND |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。