Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

L6758ATR Datasheet(PDF) 20 Page - STMicroelectronics

Part # L6758ATR
Description  DPM - dynamic phase management
PDF  42 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6758ATR Datasheet(HTML) 20 Page - STMicroelectronics

Back Button L6758ATR Datasheet HTML 16Page - STMicroelectronics L6758ATR Datasheet HTML 17Page - STMicroelectronics L6758ATR Datasheet HTML 18Page - STMicroelectronics L6758ATR Datasheet HTML 19Page - STMicroelectronics L6758ATR Datasheet HTML 20Page - STMicroelectronics L6758ATR Datasheet HTML 21Page - STMicroelectronics L6758ATR Datasheet HTML 22Page - STMicroelectronics L6758ATR Datasheet HTML 23Page - STMicroelectronics L6758ATR Datasheet HTML 24Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 20 / 42 page
background image
Device description and operation
L6758A
20/42
DocID023298 Rev 2
5
Device description and operation
The L6758A is a programmable two-to-four phase PWM controller that provides complete
control logic and protection to implement a high performance step-down DC-DC voltage
regulator optimized for advanced microprocessor power supply. The device features 2nd
generation LTB Technology: through a load transient detector, it is able to simultaneously
turn on all the phases. This allows the output voltage deviation to be minimized and, in turn,
the system cost to be minimized by providing the fastest response to a load transition.
The L6758A implements current reading across the inductor in fully-differential mode. A
sense resistor in series to the inductor can be also considered in order to improve reading
precision. The current information read corrects the PWM output in order to equalize the
average current carried by each phase.
The controller supports VR12 specifications featuring 25 MHz SVI bus and all the required
registers. The platform may program the defaults for these registers through dedicated
pinstrapping.
A complete set of protection is available: overvoltage, undervoltage, overcurrent (per-phase
and total) and feedback disconnection guarantee the load to be safe under all conditions.
Special power management features like DPM, VFDE and GDC modify phase number, gate
driving voltage and switching frequency to optimize the efficiency over the load range.
The L6758A is available in VFQFPN48 with 6x6 mm body package.
Figure 4. Device initialization
AM11137v1
SVI Packet
VCC5
VCC12
UVLO
2mSec POR
UVLO
50uSec
EN_VTT
SVI BUS
V_SinglePhase
ENVTT
SVRRDY
V_MultiPhase
VRRDY
64uSec
64uSec
SVI Packet
Command ACK but not executed



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


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   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