Datasheet
SWCS046-025
SW3
SW2
SWIO
SW1
t
dswio2sw1
t
dswio2sw2
t
dswio2sw3
t
dviosync
1.2 V
SCLSR_EN2
PFM (pulse
skipping) mode
SW1
VDD1/VFB1
0.8 V
PFM (pulse
skipping) mode
PFM (pulse skipping) mode
PWM mode PWM mode
t
dDVSEN
t
dDVSENL
t
dDVSEN
TSTEP[2:0]=001
TSTEP[2:0]=011
t
dDVSENL
SWCS046-021
TPS65910
,
TPS65910A
,
TPS65910A3
,
TPS659101
TPS659102
,
TPS659103
,
TPS659104
,
TPS659105
TPS659106, TPS659107, TPS659108, TPS659109
SWCS046U –MARCH 2010–REVISED JUNE 2014
www.ti.com
5.22.2.5 VDD1 and VDD2 Voltage Control Through SCLSR_EN1 and SDASR_EN2 Signals
Figure 5-9 shows the VDD1 and VDD2 voltage control through the SCLSR_EN1 and SDASR_EN2 signals timing
characteristics.
NOTE: Register setting: VDD1_EN1 = 1, SEL[6:0] = hex13 in VDD1_SR_REG
Figure 5-9. VDD1 Supply Voltage Control Though SCLSR_EN1
Table 5-8. VDD1 Supply Voltage Control Through SCLSR_EN1 Timing Characteristics
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
dDVSEN
: SCLSR_EN1 or SCLSR_EN2 edge to
2 × t
CK32k
= 62 µs
VDD1 or VDD2 voltage change delay
t
dDVSENL
: VDD1 or VDD2 voltage settling delay TSTEP[2:0] = 001 32 µs
TSTEP[2:0] = 011 (default) 0.4/7.5 = 53
TSTEP[2:0] = 111 160
5.22.2.6 SMPS Switching Synchronization
Figure 5-10 shows the SMPS switching synchronization timing characteristics.
NOTE: VDD1 or VDD2 switching synchronization is available in PWM mode (VDD1_PSKIP = 0 or VDD2_PSKIP = 0). SMPS
external clock (GPIO_CKSYNC) synchronization is available when VIO PWM mode is set (VIO_PSKIP = 0).
Figure 5-10. SMPS Switching Synchronization
Table 5-9. SMPS Switching Synchronization Timing Characteristics
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VDD1_PSKIP = 0,
t
dSWIO2SW1
: delay from SWIO rising edge to SW1
DCDCCKSYNC[1:0] = 11 160 ns
rising edge
DCDCCKSYNC[1:0] = 01 220
VDD2_PSKIP = 0,
t
dSWIO2SW2
: delay from SWIO rising edge to SW1
DCDCCKSYNC[1:0] = 11 160 ns
rising edge
DCDCCKSYNC[1:0] = 01 290
t
dSWIO2SW3
: delay from SWIO rising edge to SW3
206 ns
rising edge
44 Specifications Copyright © 2010–2014, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Links: TPS65910 TPS65910A TPS65910A3 TPS659101 TPS659102 TPS659103 TPS659104
TPS659105 TPS659106 TPS659107 TPS659108 TPS659109