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EFP01 Datasheet(PDF) 141 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) 141 Page - Silicon Laboratories

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6.2.46 BK_CTRL1
Offset
Bit Position
0x57
7
6
5
4
3
2
1
0
Reset
0x00
0x00
0x00
Access
Name
Table 6.46. BK_CTRL1
Bit
Name
Reset
Access
Description
7:5
BK_TON_MAX
0x00
read-write
Max Ton is bounded to 70ns * ( 4 * BK_TON_MAX + 1 )
Ton is not bounded if BK_TON_MAX==0
Value
Mode
Description
0
NOLIMIT
1
350NS
2
630NS
3
910NS
4
1190NS
5
1470NS
6
1750NS
7
2030NS
4:3
BK_MODE
0x00
read-write
Sets the mode of the DCDC B converter. Regardless of
this setting, in EM4 the DCDC B converter will be disabled.
Value
Mode
Description
0
DISABLED
Off
1
BUCKONLY
Buck Mode Only
2
LDOONLY
LDOB enabled, Buck Disabled
3
BUCKLDO
Buck or LDOB, depending on DV=VDDB-VOB
2:1
BK_DRVR_SPEED
0x00
read-write
DCDC B 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.
0
RESERVED
0
Reserved. Always write bits to 0.
EFP01 Energy Friendly PMIC Family Data Sheet
Register Definitions
silabs.com | Building a more connected world.
Rev. 1.3 | 141



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