參數(shù)資料
型號(hào)： UCC3977TRPW
廠商： Texas Instruments, Inc.
英文描述： BALLAST/BACKLIGHT CONTROLLER/DRIVER|TSSOP|8PIN|PLASTIC
中文描述： 鎮(zhèn)流器/背光控制器/驅(qū)動(dòng)器| TSSOP封裝| 8引腳|塑料
文件頁數(shù)： 10/28頁
文件大?。?/td> 433K
代理商： UCC3977TRPW
SLUS499A
–
NOVEMBER 2001
–
REVISED JANUARY 2002
10
www.ti.com
APPLICATION INFORMATION
MECHANICAL
DISPLACEMENT
MECHANICAL
STRESS
0
0
VIN
VOUT
SUPPORTS
L = LENGTH
T = THICKNESS
h = HEIGHT
FORCE
FORCE
PRIMARY
SECONDARY
UDG
–
01076
Figure 7. Typical Longitudinal Mode Piezoelectric Transformer for CCFL Applications.
A typical multi-layer PZT with
longitudinal mode
geometry is shown in Figure 7, a single layer design would have
similar construction without the layering on the primary. An ac voltage is applied to the V
IN
electrodes causing
mechanical expansion and compression in the thickness direction (see Figure 6). This displacement on the
primary is transferred as a force in the longitudinal direction. Supports at and wavelength provide a means
for a standing wave to be generated at a resonant frequency as shown. Mechanical resonance occurs at
multiple standing wave frequencies (n) based on the transformer
’
s length and material velocity (v).
f
n
n
v
length
2
Voltage gain is a function of the PZT material coefficient g[
ω
], the number of primary layers, the thickness of
the material and the overall length as follows:
V
GAIN
length
thickness
layers
g[ ]
An electrode at V
OUT
is used to recover the amplified electrical potential at the secondary.
PZT electrical model
In order to predict PZT performance in a system, it is useful to develop an electrical circuit model. The model
shown in Figure 8 is often used to describe the behavior of a PZT near the fundamental resonant frequency.
Many PZT manufacturers will provide component values for the model based on measurements taken at
various frequencies and output loads.
(1)
(2)
相關(guān)PDF資料
PDF描述
UCC35705DGKTR HIGH - SPEED VOLTAGE MODE PULSE MODE WIDTH MODULATOR
UCC35706DTR HIGH - SPEED VOLTAGE MODE PULSE MODE WIDTH MODULATOR
UCC35706DGKTR Aluminum Electrolytic Radial Lead High Ripple Capacitor; Capacitance: 330uF; Voltage: 400V; Case Size: 25x50 mm; Packaging: Bulk
UCC35705EVM UCC35705 Evaluation Module(UCC35705評(píng)估模塊)
UCC3804J Low-Power BiCMOS Current-Mode PWM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UCC40V680UF 制造商:United Chemi-Con 功能描述:AL040X768 85C 13X31
UCC500-30GM-IU-V1 B540 制造商:PEPPERL+FUCHS 功能描述:Sensor, Ultrasonic, Chem Resistant, 094792
UCC50V.47UF 制造商:United Chemi-Con 功能描述:RL050XR47
UCC50V1000UFSM 制造商:United Chemi-Con 功能描述:RL050X810 16X30 85C SM SERIES
UCC50V10UFT&R 制造商:United Chemi-Con 功能描述:RL610X050 SME T&R .1LS
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*