Datasheet

V -
IN
V
OUT
2
V
OUT
V
IN
1
( f L )
I =
OUT,TRANS
TPS62360, TPS62361B
TPS62362, TPS62363
www.ti.com SLVSAU9C –MAY 2011–REVISED NOVEMBER 2012
DYNAMIC VOLTAGE SCALING
The output voltage can be adjusted dynamically. Each of the four output registers can be programmed
individually by setting OV[5:0] (TPS62360/62) and OV[6:0] (TPS62361B/63) respectively in the SET0, SET1,
SET2 and SET3 registers.
Table 3. TPS62360, TPS62362 Output Voltage Settings
for Registers SET0, SET1, SET2 and SET3
REGISTERS: SET0, SET1, SET2, SET3
OV[D5:D0] OUTPUT VOLTAGE
00 0000 770 mV
00 0001 780 mV
00 0010 790 mV
00 0011 800 mV
… …
11 1101 1380 mV
11 1110 1390 mV
11 1111 1400 mV
Table 4. TPS62361B, TPS62363 Output Voltage
Settings for Registers SET0, SET1, SET2 and SET3
REGISTERS: SET0, SET1, SET2, SET3
OV[D6:D0] OUTPUT VOLTAGE
000 0000 500 mV
000 0001 510 mV
000 0010 520 mV
000 0011 530 mV
… …
111 1101 1750 mV
111 1110 1760 mV
111 1111 1770 mV
If the output voltage is changed at the active register (selected by VSEL0 and VSEL1), these changes will apply
after the I
2
C command is sent.
POWER SAVE MODE AND FORCED PWM MODE
The TPS6236x devices feature a Power Save Mode to gain efficiency at light output current conditions. The
device automatically transitions in both directions between pulse width modulation (PWM) operation at high load
and pulse frequency modulation (PFM) operation at light load current. This maintains high efficiency at both light
and heavy load currents. In PFM Mode, the device generates single switching pulses when required to maintain
the programmed output voltage.
The transition into and out of Power Save Mode happens within the entire regulation scheme and is seamless in
both directions.
The output current, at which the device transitions from PWM to PFM operation can be estimated as follows:
(1)
With:
V
IN
= Input voltage
V
OUT
= Output Voltage
ƒ = Switching frequency, typ. 2.5 MHz
L = Inductor value
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Product Folder Links: TPS62360 TPS62361B TPS62362 TPS62363