TPS53681 Datasheet, PDF (91/125 Pages) Texas Instruments – Dual-Channel (6-Phase + 2-Phase) or (5-Phase + 3-Phase) D-CAP+ Step-Down Multiphase Controller with NVM and PMBus

www.ti.com
TPS53681
SLUSCT1 – JUNE 2017
Table 60. MFR_SPECIFIC_14 Register Field Descriptions (continued)
Bit Field
Type
Reset
Description
7
DPS_EN
Enable or Disable Dynamic Phase Shedding
RW
NVM
0b: Disable dynamic phase shedding
1b: Enable dynamic phase shedding
6:5 DYN_RAMP_USR
Dynamic ramp amplitude setting during USR operation. Only
applies to USR Level 1.
00b: Equal to the settings in the RAMP bits
RW
NVM
01b: 40 mV
10b: 80 mV
11b: 120 mV
4
DYN_RAMP_2PH
Dynamic ramp amplitude setting during 2 phase operation.
RW
NVM
0b: Equal to the settings in the RAMP bits
1b: 120 mV
3
DYN_RAMP_1PH
2:0 RAMP
Dynamic ramp amplitude setting during 1 phase operation.
RW
NVM
0b: Equal to the settings in the RAMP bits
1b: 80 mV
RW
NVM
Ramp amplitude settings. See Table 61.
Table 61. Ramp Amplitude Settings
RAMP (binary)
000b
001b
010b
011b
100b
101b
110b
111b
Ramp Amplitude Setting (mV)
40
80
120
160
200
240
280
320
7.5.21.2 (DFh) MFR_SPECIFIC_15
The MFR_SPECIFIC_15 command is used to configure dynamic phase shedding. The MFR_SPECIFIC_15
command must be accessed through Write Word/Read Word transactions.
MFR_SPECIFIC_15 is a paged register. In order to access MFR_SPECIFIC_15 command for channel A, PAGE
must be set to 00h. In order to access the MFR_SPECIFIC_15 register for channel B, PAGE must be set to 01h.
15
RW
DPS_DCM
14
13
RW
RW
DPS_2TO1_FINE_DROP
7
6
5
RW
RW
RW
DPS_3TO4_FI
NE_ADD
(PAGE 0 only)
DPS_2TO3_FINE_ADD
LEGEND: R/W = Read/Write; R = Read only
12
11
RW
RW
DPS_5TO6_FINE_ADD
(PAGE 0 only)
4
3
RW
RW
DPS_1TO2_FINE_ADD
10
9
RW
RW
DPS_4TO5_FINE_ADD
(PAGE 0 only)
2
1
RW
RW
8
RW
DPS_3TO4_FI
NE_ADD
(PAGE 0 only)
0
RW
2TO1_PH_EN
DPS_COURSE_TH
MFR_SPECIFIC_15
Copyright © 2017, Texas Instruments Incorporated
Product Folder Links: TPS53681
Submit Documentation Feedback
91