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

X  

TC427CPA 数据表(PDF) 6 Page - Microchip Technology

部件名 TC427CPA
功能描述  1.5A Dual High-Speed Power MOSFET Drivers
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

TC427CPA 数据表(HTML) 6 Page - Microchip Technology

Back Button TC427CPA Datasheet HTML 2Page - Microchip Technology TC427CPA Datasheet HTML 3Page - Microchip Technology TC427CPA Datasheet HTML 4Page - Microchip Technology TC427CPA Datasheet HTML 5Page - Microchip Technology TC427CPA Datasheet HTML 6Page - Microchip Technology TC427CPA Datasheet HTML 7Page - Microchip Technology TC427CPA Datasheet HTML 8Page - Microchip Technology TC427CPA Datasheet HTML 9Page - Microchip Technology TC427CPA Datasheet HTML 10Page - Microchip Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 6 / 16 page
background image
TC426/TC427/TC428
DS21415B-page 6
 2002 Microchip Technology Inc.
3.0
APPLICATIONS INFORMATION
3.1
Supply Bypassing
Charging and discharging large capacitive loads
quickly requires large currents. For example, charging
a 1000pF load to 18V in 25nsec requires an 0.72A
current from the device power supply.
To ensure low supply impedance over a wide frequency
range, a parallel capacitor combination is recom-
mended for supply bypassing. Low-inductance ceramic
disk capacitors with short lead lengths (< 0.5 in.) should
be used. A 1
µF film capacitor in parallel with one or two
0.1
µF ceramic disk capacitors normally provides
adequate bypassing.
3.2
Grounding
The TC426 and TC428 contain inverting drivers.
Ground potential drops developed in common ground
impedances from input to output will appear as
negative feedback and degrade switching speed
characteristics.
Individual ground returns for the input and output
circuits or a ground plane should be used.
3.3
Input Stage
The input voltage level changes the no-load or
quiescent supply current. The N-channel MOSFET
input stage transistor drives a 2.5mA current source
load. With a logic "1" input, the maximum quiescent
supply current is 8mA. Logic "0" input level signals
reduce
quiescent
current
to
0.4mA
maximum.
Minimum power dissipation occurs for logic "0" inputs
for the TC426/TC427/TC428. Unused driver inputs
must be connected to VDD or GND.
The drivers are designed with 100mV of hysteresis.
This provides clean transitions and minimizes output
stage current spiking when changing states. Input
voltage thresholds are approximately 1.5V, making the
device TTL compatible over the 4.5V to 18V supply
operating range. Input current is less than 1
µA over this
range.
The TC426/TC427/TC428 may be directly driven by
the TL494, SG1526/1527, SG1524, SE5560, and
similar switch-mode power supply integrated circuits.
3.4
Power Dissipation
The supply current vs frequency and supply current
vs capacitive load characteristic curves will aid in
determining power dissipation calculations.
The TC426/TC427/TC428 CMOS drivers have greatly
reduced quiescent DC power consumption. Maximum
quiescent current is 8mA compared to the DS0026
40mA
specification.
For
a
15V
supply,
power
dissipation is typically 40mW.
Two other power dissipation components are:
• Output stage AC and DC load power.
• Transition state power.
Output stage power is:
Po = PDC + PAC
= Vo (IDC) + f CL VS
2
Where:
Vo = DC output voltage
IDC = DC output load current
f
= Switching frequency
Vs = Supply voltage
In power MOSFET drive applications the PDC term is
negligible. MOSFET power transistors are high imped-
ance, capacitive input devices. In applications where
resistive loads or relays are driven, the PDC component
will normally dominate.
The magnitude of PAC is readily estimated for several
cases:
A.
B.
1. f
= 200kHZ
1. f
= 200kHz
2. CL =1000pf
2. CL =1000pf
3. Vs
= 18V
3. Vs
= 15V
4. PAC = 65mW
4. PAC = 45mW
During output level state changes, a current surge will
flow through the series connected N and P channel
output MOSFETS as one device is turning "ON" while
the other is turning "OFF". The current spike flows only
during output transitions. The input levels should not be
maintained between the logic "0" and logic "1" levels.
Unused driver inputs must be tied to ground and
not be allowed to float. Average power dissipation will
be reduced by minimizing input rise times. As shown in
the characteristic curves, average supply current is
frequency dependent.


类似零件编号 - TC427CPA

制造商部件名数据表功能描述
logo
TelCom Semiconductor, I...
TC427CPA TELCOM-TC427CPA Datasheet
76Kb / 5P
   1.5A DUAL HIGH-SPEED POWER MOSFET DRIVERS
logo
Microchip Technology
TC427CPA MICROCHIP-TC427CPA Datasheet
514Kb / 18P
   1.5A Dual High-Speed Power MOSFET Drivers
2002-2012 11/27/12
TC427CPA MICROCHIP-TC427CPA Datasheet
528Kb / 16P
   1.5A Dual High-Speed Power MOSFET Drivers
02/16/06
More results

类似说明 - TC427CPA

制造商部件名数据表功能描述
logo
TelCom Semiconductor, I...
TC426 TELCOM-TC426 Datasheet
76Kb / 5P
   1.5A DUAL HIGH-SPEED POWER MOSFET DRIVERS
logo
Microchip Technology
TC4426 MICROCHIP-TC4426 Datasheet
66Kb / 9P
   1.5A DUAL HIGH-SPEED POWER MOSFET DRIVERS
2001
TC4426A MICROCHIP-TC4426A_06 Datasheet
427Kb / 18P
   1.5A Dual High-Speed Power MOSFET Drivers
2006
TC4426M MICROCHIP-TC4426M Datasheet
209Kb / 18P
   1.5A Dual High-Speed Power MOSFET Drivers
2005
TC4426 MICROCHIP-TC4426_V01 Datasheet
976Kb / 28P
   1.5A Dual High-Speed Power MOSFET Drivers
2006-2014
TC426 MICROCHIP-TC426_13 Datasheet
514Kb / 18P
   1.5A Dual High-Speed Power MOSFET Drivers
2002-2012 11/27/12
TC4426M MICROCHIP-TC4426M_13 Datasheet
239Kb / 18P
   1.5A Dual High-Speed Power MOSFET Drivers
11/29/12
TC4426 MICROCHIP-TC4426_13 Datasheet
356Kb / 20P
   1.5A Dual High-Speed Power MOSFET Drivers
2002-2012 11/27/12
TC426 MICROCHIP-TC426_06 Datasheet
587Kb / 16P
   1.5A Dual High-Speed Power MOSFET Drivers
2006
TC4426 MICROCHIP-TC4426_06 Datasheet
444Kb / 20P
   1.5A Dual High-Speed Power MOSFET Drivers
2006
TC4426A MICROCHIP-TC4426A Datasheet
501Kb / 16P
   1.5A Dual High-Speed Power MOSFET Drivers
2002
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


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