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SWCS049E 数据表(PDF) 43 Page - Texas Instruments

部件名 SWCS049E
功能描述  TPS65911 Integrated Power Management Unit Top Specification
PDF  144 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

SWCS049E 数据表(HTML) 43 Page - Texas Instruments

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SWCS049-010
EN2
VDD2/VFB2
VDD1/VFB1
1.2 V
EN1
NRESPWRON
Low-power mode
PFM (pulse skipping) mode
Switch-on sequence
Switch-off sequence
Device on
PWM mode
SW1
tdOEN
0 V
tdVDDEN
tdEN
3.3 V
tdVDDEN
tdSOFF2
tdEN
tdEN
SWCS046-009
EN1
LDO1
1.2 V
LDO4
1.8 V
EN2
NRESPWRON
tdVEN
tdEN
Switch-on sequence
Switch-off sequence
Device on
tdEN
tdEN
tdSOFF2
tdEN
Low-power mode
43
TPS65911
www.ti.com
SWCS049S – JUNE 2010 – REVISED AUGUST 2018
Submit Documentation Feedback
Product Folder Links: TPS65911
Specifications
Copyright © 2010–2018, Texas Instruments Incorporated
5.21.3.4 Power Supplies State Control Through EN1 and EN2 Signals
NOTE: Register setting: LDO1_EN1 = 1, LDO4_EN2 = 1, and LDO4_KEEPON = 1.
Figure 5-6. LDO Type Supplies State Control Through EN1 and EN2
NOTE: Register setting: VDD2_EN2 = 1, VDD1_EN1 = 1, VDD1_KEEPON = 1, VDD1_PSKIP = 0, and SEL[6:0] = hex00 in
VDD2_SR_REG.
Figure 5-7. VDD1 and VDD2 Supplies State Control Through EN1 and EN2
Table 5-7. Supplies State Control Through EN1 and EN2 Timing Characteristics
MIN
NOM
MAX
UNIT
tdEN
NRESPWRON to supply state change delay, EN1 or EN2 driven
0
ms
tdOEN
EN1 or EN2 edge to supply state change delay
1 × tCK32k =
31
µs
tdVDDEN
EN1 or EN2 edge to VDD1 or VDD2 DCDC turnon delay
3 × tCK32k =
63
µs



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