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TPS40322 Datasheet(PDF) 38 Page - Texas Instruments

Part # TPS40322
Description  Dual Output or Two-Phase Synchronous Buck Controller
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS40322 Datasheet(HTML) 38 Page - Texas Instruments

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Time (s)
TS(max)
TS(min)
TL
TP
tS
25
rRAMP(up)
rRAMP(down)
t25P
tP
tL
TPS40322
SLUSAF8E – JULY 2011 – REVISED JANUARY 2016
www.ti.com
10.3 Mounting and Thermal Profile Recommendation
Proper mounting technique adequately covers the exposed thermal tab with solder. Excessive heat during the
reflow process can affect electrical performance. Figure 34 shows the recommended reflow oven thermal profile.
Proper post-assembly cleaning is also critical to device performance. See SLUA271 for more information.
Figure 34. Recommended Reflow Oven Thermal Profile
Table 9. Recommended Thermal Profile Parameters
PARAMETER
MIN
TYP
MAX
UNIT
RAMP UP AND RAMP DOWN
rRAMP(up)
Average ramp-up rate, TS(max) to TP
3
°C/s
rRAMP(down)
Average ramp-down rate, TP to TS(max)
6
°C/s
PRE-HEAT
TS
Pre-Heat temperature
150
200
°C
tS
Pre-heat time, TS(min) to TS(max)
60
180
s
REFLOW
TL
Liquidus temperature
217
°C
TP
Peak temperature
260
°C
tL
Time maintained above liquidus temperature, TL
60
150
s
tP
Time maintained within 5°C of peak temperature, TP
20
40
s
t25P
Total time from 25°C to peak temperature, TP
480
s
38
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Product Folder Links: TPS40322


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