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EFP01 Datasheet(PDF) 134 Page - Silicon Laboratories

Part # EFP01
Description  EFP01 Energy Friendly PMIC Family
PDF  158 Pages
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Manufacturer  SILABS [Silicon Laboratories]
Direct Link  http://www.silabs.com
Logo SILABS - Silicon Laboratories

EFP01 Datasheet(HTML) 134 Page - Silicon Laboratories

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6.2.40 BB_CTRL5
Offset
Bit Position
0x51
7
6
5
4
3
2
1
0
Reset
0x00
0x00
Access
Name
Table 6.40. BB_CTRL5
Bit
Name
Reset
Access
Description
7:6
BB_DRVR_SPEED
0x00
read-write
DCDC A pre-driver speed control. Recommend to set to 2
for the highest efficiency, but will also generate the most
EMI. Lower settings can be used to reduce EMI at the ex-
pense of efficiency.
5:0
BB_IPK_BOOST_ADJ
0x00
read-write
When BB_IPK_NOADJ==0, the value of
BB_IPK_BOOST_ADJ controls the adjustments made to
the boost mode peak current as the battery voltage drops.
When BB_IPK_NOADJ==1, this field has no effect.
For Single Cell Mode, BB_IPK_BOOST_ADJ should be
programmed:
BB_IPK_BOOST_ADJ = ROUND(2*(LN(0.294*4096*VOA/
1.22*(BB_IPK+12)/43)*23.6-163.8),0)
For non-Single Cell Modes, BB_IPK_BOOST_ADJ should
be programmed:
BB_IPK_BOOST_ADJ = ROUND(2*(LN(0.2*4096*VOA/
1.22*(BB_IPK+12)/43)*23.6-157.2),0)
EFP01 Energy Friendly PMIC Family Data Sheet
Register Definitions
silabs.com | Building a more connected world.
Rev. 1.3 | 134



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