Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

Preview PDF HTML

FDMF3170 Datasheet(PDF) 17 Page - ON Semiconductor

Part # FDMF3170
Description  Smart Power Stage (SPS) Modules
PDF  21 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

FDMF3170 Datasheet(HTML) 17 Page - ON Semiconductor

Back Button FDMF3170 Datasheet HTML 13Page - ON Semiconductor FDMF3170 Datasheet HTML 14Page - ON Semiconductor FDMF3170 Datasheet HTML 15Page - ON Semiconductor FDMF3170 Datasheet HTML 16Page - ON Semiconductor FDMF3170 Datasheet HTML 17Page - ON Semiconductor FDMF3170 Datasheet HTML 18Page - ON Semiconductor FDMF3170 Datasheet HTML 19Page - ON Semiconductor FDMF3170 Datasheet HTML 20Page - ON Semiconductor FDMF3170 Datasheet HTML 21Page - ON Semiconductor  
Zoom Inzoom in Zoom Outzoom out
 17 / 21 page
background image
© 2016 Semiconductor Components Industries, LLC
www.onsemi.com
FDMF3170
Rev. 1.2
17
DrMOS
PH2
SW
Dynamic
Load
30~120A
Multi-
Phase
Controller
ISEN2+
ISEN2-
ISEN1+
ISEN1-
ISEN3+
ISEN3-
DrMOS
PH1
SW
DrMOS
PH3
SW
SPS
PH2
SW
Dynamic
Load
30~120A
IMON
REFIN
Multi-
Phase
Controller
ISEN2+
ISEN2-
ISEN1+
ISEN1-
ISEN3+
ISEN3-
SPS
PH1
SW
IMON
REFIN
SPS
PH3
SW
IMON
REFIN
Time
35
IINDUCTOR [A]
VIMON-REFIN [mV]
0
* VIMON-REFIN [mV] = IINDUCTOR [A] X 5 mV
IINDUCTOR
40
15
T=1/Fsw
45
10
5
Time
175
0
200
75
225
50
25
T=1/Fsw
Figure 27.
DrMOS with Inductor DCR Sensing vs. SPS with IMON
Temperature Monitor / Fault Flag
(TMON / FAULT)
The TMON / FAULT pin on FDMF3170 is a thermal
monitor output in normal operation. Before power is
ready, TMON pin is strongly pulled low with a 50ohm
resistor. As a result, it can be used as a power ready
indicator. Also, this pin is used as a module FAULT flag
pin if there is OCP, OTP or high side FET shorted.
The TMON pin output is a Proportional to Absolute
Temperature (PTAT) voltage sourced signal referenced
to AGND when no module FAULT is present. It will
typically output 0.6 V at 0°C and 1.8 V at 150°C with
8 mV / °C typical slope.
TMON pins from multiple FDMF3170 modules (used in
multi-phase topologies) can be tied together to share a
common thermal bus. Operating with this configuration
will force the thermal bus signal to report the highest
voltage output TMON signal to the controller (highest
temperature). The TMON output has a low output
impedance when sourcing current and a high output
impedance when sinking current.
The TMON signal reported from the module pin is a
buffered
version
of
an
internal
TMON
signal.
Configuring the SPS module to share a common
thermal bus will still permit each module to safely
monitor its own temperature since the internal TMON
signal is unaffected by the common thermal bus
configuration.
The TMON voltage has a slope defined in Equation (1).
(1)
The TMON pin pulls to an internal 3.0 V typical rail
capable of sourcing 5 mA current during any of the
FAULT conditions listed below.
0
150
TJ [°C]
0.6
1.8
VTMON
[V]
* RTMON = 1 k, CTMON = 1 nF
3.0
Figure 28.
SPS TJ vs. VTMON



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21


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