Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

TPS62152-Q1 Datasheet(PDF) 11 Page - Texas Instruments

Click here to check the latest version.
Part # TPS62152-Q1
Description  3-V to 17-V, 1-A Step-Down Converter in 3-mm3-mm QFN Package
Download  43 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS62152-Q1 Datasheet(HTML) 11 Page - Texas Instruments

Back Button TPS62152-Q1 Datasheet HTML 7Page - Texas Instruments TPS62152-Q1 Datasheet HTML 8Page - Texas Instruments TPS62152-Q1 Datasheet HTML 9Page - Texas Instruments TPS62152-Q1 Datasheet HTML 10Page - Texas Instruments TPS62152-Q1 Datasheet HTML 11Page - Texas Instruments TPS62152-Q1 Datasheet HTML 12Page - Texas Instruments TPS62152-Q1 Datasheet HTML 13Page - Texas Instruments TPS62152-Q1 Datasheet HTML 14Page - Texas Instruments TPS62152-Q1 Datasheet HTML 15Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 43 page
background image
OUT
ON
IN
V
t
400 ns
V
=
´
11
TPS62150, TPS62150A, TPS62151, TPS62152, TPS62153
www.ti.com
SLVSAL5D – NOVEMBER 2011 – REVISED SEPTEMBER 2016
Product Folder Links: TPS62150 TPS62150A TPS62151 TPS62152 TPS62153
Submit Documentation Feedback
Copyright © 2011–2016, Texas Instruments Incorporated
8.3.5 Frequency Selection (FSW)
To get high power density with a very small solution size, a high switching frequency allows the use of small
external components for the output filter. However, switching losses increase with the switching frequency. If
efficiency is the key parameter, more than solution size, the switching frequency can be set to half (1.25 MHz
typical) by pulling FSW to High. It is mandatory to start with FSW = Low to limit inrush current, which connecting
FSW to VOUT or PG can accomplish. Running with lower frequency produces higher efficiency, but also creates
higher output-voltage ripple. Pull FSW to Low for high-frequency operation (2.5 MHz typical). To get low ripple
and full output current at the lower switching frequency, the recommended minimum inductor value is 2.2 µH. An
application can change the switching frequency during operation, if needed. An internally connected pulldown
resistor of about 400 kΩ on this pin acts the same way as one on the DEF pin (see Pin-Selectable Output
Voltage (DEF)).
8.3.6 Undervoltage Lockout (UVLO)
If the input voltage drops, the undervoltage lockout prevents faulty operation of the device by switching off both
the power FETs. The typical undervoltage-lockout threshold setting is 2.7 V. The device is fully operational for
voltages above the UVLO threshold and turns off if the input voltage trips the threshold. The converter starts
operation again once the input voltage exceeds the threshold by a hysteresis of typically 200 mV.
8.3.7 Thermal Shutdown
An internal temperature sensor monitors the junction temperature (TJ) of the device. If TJ exceeds 160°C (typ),
the device goes into thermal shutdown. Both the high-side and low-side power FETs turn off and PG goes into
the high-impedance state. When TJ decreases below the hysteresis level, the converter resumes normal
operation, beginning with soft start. To avoid unstable conditions, the device implements a hysteresis of typically
20°C on the thermal shutdown temperature.
8.4 Device Functional Modes
8.4.1 Pulse-Width Modulation (PWM) Operation
The TPS6215x operates using pulse-width modulation in continuous-conduction mode (CCM) with a nominal
switching frequency of 2.5 MHz or 1.25 MHz, selectable with the FSW pin. The frequency variation in the PWM
mode is controlled and depends on VIN, VOUT, and the inductance. The device operates in PWM mode as long
the output current is higher than half the inductor ripple current. To maintain high efficiency at light loads, the
device enters power-save mode at the boundary of discontinuous conduction mode (DCM). This happens if the
output current becomes smaller than half the inductor ripple current.
8.4.2 Power-Save Mode Operation
The TPS6215x enters its built-in power-save mode seamlessly if the load current decreases. This secures a high
efficiency in light load operation. The device remains in power-save mode as long as the inductor current is
discontinuous.
In power-save mode, the switching frequency decreases linearly with the load current, maintaining high
efficiency. The transition into and out of power-save mode happens within the entire regulation scheme and is
seamless in both directions.
TPS6215x includes a fixed on-time circuitry. An estimate for this on-time, in steady-state operation with
FSW=Low, is:
space
(1)
space
For very small output voltages, an absolute minimum on-time of about 80 ns is kept to limit switching losses. The
operating frequency is thereby reduced from its nominal value, which keeps efficiency high. Also, the off-time can
reach its minimum value at high duty cycles. The output voltage remains regulated in such cases. Using tON, the
typical peak inductor current in power-save mode is approximated by:
space


Similar Part No. - TPS62152-Q1

ManufacturerPart #DatasheetDescription
logo
Texas Instruments
TPS62152-Q1 TI1-TPS62152-Q1 Datasheet
1Mb / 35P
[Old version datasheet]   3 to 17-V 1-A Step-Down Converter in 3x3-mm QFN Package
TPS62152-Q1 TI1-TPS62152-Q1_15 Datasheet
1Mb / 33P
[Old version datasheet]   Automotive Wide Input, Fixed 3V Output Voltage, 1A Step-Down Converter
More results

Similar Description - TPS62152-Q1

ManufacturerPart #DatasheetDescription
logo
Texas Instruments
TPS62150 TI-TPS62150_15 Datasheet
1Mb / 39P
[Old version datasheet]   TPS6215x 3-V to 17-V, 1-A Step-Down Converter in 3-mm 횞 3-mm QFN Package
TPS62140 TI1-TPS62140 Datasheet
1Mb / 34P
[Old version datasheet]   3-V to 17-V 2-A Step-Down Converter in 3-mm 횞 3-mm QFN Package
TPS62152-Q1 TI1-TPS62152-Q1 Datasheet
1Mb / 35P
[Old version datasheet]   3 to 17-V 1-A Step-Down Converter in 3x3-mm QFN Package
TPS62140 TI-TPS62140_15 Datasheet
1Mb / 40P
[Old version datasheet]   TPS6214x 3-V to 17-V 2-A Step-Down Converter in 3 횞 3 QFN Package
TPS62140 TI-TPS62140_13 Datasheet
1Mb / 35P
[Old version datasheet]   3-V to 17-V 2-A Step-Down Converter in 3x3 QFN Package
TPS62825 TI1-TPS62825_18 Datasheet
1Mb / 24P
[Old version datasheet]   2-, 3-A Step-Down Converter with 1% Output Accuracy in 1.5-mm 횞 1.5-mm QFN Package
TPS62590-Q1 TI1-TPS62590-Q1 Datasheet
833Kb / 25P
[Old version datasheet]   1-A Step-Down Converter in 2-mm 횞 2-mm QFN Package
TPS62816-Q1 TI-TPS62816-Q1 Datasheet
7Mb / 40P
[Old version datasheet]   TPS62816-Q1 2.7-V to 6-V, 6-A Automotive Step-Down Converter in 3-mm 횞 2-mm QFN Package with Wettable Flanks
TPS62816-Q1 TI-TPS62816-Q1_V01 Datasheet
8Mb / 41P
[Old version datasheet]   TPS62816-Q1 2.7-V to 6-V, 6-A Automotive Step-Down Converter in 3-mm 횞 2-mm QFN Package with Wettable Flanks
DECEMBER 2021
TPS62825 TI-TPS62825_V01 Datasheet
2Mb / 33P
[Old version datasheet]   TPS6282x 2.4-V to 5.5-V Input, 1-, 2-, 3-, 4-A Step-down Converter with 1% Output Accuracy in 1.5-mm 횞 1.5-mm QFN Package
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 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43


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
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com