TPS62361BYZHT datasheet(23/52 Pages) TI

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V -

OUT

( f

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OUT,TRANS

TPS62360, TPS62361B, TPS62362

www.ti.com

SLVSAU9A

– MAY 2011 – REVISED AUGUST 2011

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) 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 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 I2C 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:

VIN = Input voltage

VOUT = Output Voltage

ƒ = Switching frequency, typ. 2.5 MHz

L = Inductor value

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Product Folder Link(s): TPS62360 TPS62361B TPS62362

TPS62361BYZHT Datasheet(PDF) 23 Page - Texas Instruments

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