參數(shù)資料
型號(hào)： TPS62361BYZHT
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： 4.3 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, BGA16
封裝： 2 X 2 MM, GREEN, DSBGA-16
文件頁(yè)數(shù)： 16/52頁(yè)
文件大?。?/td> 1125K
代理商： TPS62361BYZHT
V -
IN
V
OUT
2
V
OUT
V
IN
1
( f
L )
I
=
OUT,TRANS
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
= Switching frequency, typ. 2.5 MHz
L = Inductor value
Copyright
2011, Texas Instruments Incorporated
23
Product Folder Link(s): TPS62360 TPS62361B TPS62362
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