Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

TDA21231 Datasheet(PDF) 11 Page - Infineon Technologies AG

Part No. TDA21231
Description  DrMOS Product Family
Download  19 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  INFINEON [Infineon Technologies AG]
Direct Link  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

TDA21231 Datasheet(HTML) 11 Page - Infineon Technologies AG

Back Button TDA21231_15 Datasheet HTML 7Page - Infineon Technologies AG TDA21231_15 Datasheet HTML 8Page - Infineon Technologies AG TDA21231_15 Datasheet HTML 9Page - Infineon Technologies AG TDA21231_15 Datasheet HTML 10Page - Infineon Technologies AG TDA21231_15 Datasheet HTML 11Page - Infineon Technologies AG TDA21231_15 Datasheet HTML 12Page - Infineon Technologies AG TDA21231_15 Datasheet HTML 13Page - Infineon Technologies AG TDA21231_15 Datasheet HTML 14Page - Infineon Technologies AG TDA21231_15 Datasheet HTML 15Page - Infineon Technologies AG Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 19 page
background image
TDA21231
Data Sheet
10
Table 13
EN Pin Functionality
EN logic level
Driver output
Low
Shutdown : GL = GH = Low
High
Enable : GL = Active, GH = Active
Open (left floating, or High impedance)
Shutdown : GL = GH = Low
5.3
Thermal protection
The PHFLT# pin is a digital monitoring output for the thermal warning. It does not affect the operation of the
driver nor does it shut down the device.
When the driver junction temperature exceeds the thermal warning threshold of 140 °C (typ) the open drain
output PHFLT# will be pulled low. Externally PHFLT# has to be connected to a supply (e.g. +3.3 V) by a resistor
in the range of 10 k
 When the temperature of the driver junction decreases below the level of thermal warning
threshold minus hysteresis (10 K typ.), the pin PHFLT# is released. VPHFLT# is being pulled up by the external
resistance. If the thermal warning feature is not used the pin can be left floating.
Figure 5
Thermal warning
5.4
Shoot Through Protection
The TDA21231 driver includes gate drive functionality to protect against shoot through. In order to protect the
power stage from overlap, both high-side and low-side MOSFETs being on at the same time, the adaptive
control circuitry monitors specific voltages. When the PWM signal transitions to low, the high-side MOSFET will
begin to turn off after the propagation delay time t_pdlu. When VGS of the high-side MOSFET is discharged
below 1 V (a threshold below which the high-side MOSFET is off), a secondary delay t_pdhl is initiated. After
that delay the low-side MOSFET turns on r
egardless of the state of the “SW” pin. It ensures that the converter
can sink current efficiently and the bootstrap capacitor will be refreshed appropriately during each switching
cycle. See Figure 8 for more detail.
“H”
“L”
TPHFLT#_T - TPHFLT#_H
TPHFLT#_T
Tj
PHFLT#
Output Logic
Level
Hysteresis
Rising temperature
Falling
temperature


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19 


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
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