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參數資料
| 型號： | TPS51221RTVRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, 333 kHz SWITCHING FREQ-MAX, PQCC32 |
| 封裝： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件頁數： | 1/39頁 |
| 文件大小： | 829K |
| 代理商： | TPS51221RTVRG4 |
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1
FEATURES
APPLICATIONS
DESCRIPTION
TYPICAL APPLICATION CIRCUIT
1
2
3
4
24
23
22
21
DRVH2
VIN
VREG3
EN2
DRVH1
V5SW
RF
EN1
TPS51221RTV
(QFN32)
5
6
7
8
20
19
18
17
PGOOD2
SKIPSEL2
CSP2
CSN2
PGOOD1
SKIPSEL1
CSP1
CSN1
9
VFB1
32
SW1
31
VBST1
30
DR
VL1
29
VREG5
28
GND
27
DR
VL2
26
VBST2
25
SW2
10
COMP1
11
IMON1
12
EN
13
VREF2
14
TRIP
15
COMP2
16
VFB2
VO1
5.0V
L1
C22
VBAT
PowerPAD
C02
C01
VREG5
5V/100mA
R23
R13
C11
R11
PGOOD1
EN
EN1
VREG3
3.3V/10mA
Q11
Q12
Q22
Q21
C13
R12
GND
R14
GND
L2
R24
GND
C23
C21
R21
R22
GND
PGOOD2
EN2
VO2
3.3V
C03
R01
PGND
GND
SKIPSEL1
SKIPSEL2
VBAT
VO2
C12
VBAT
VO1
VREG5
C14
PGND
C24
GND
R02
C04
IMON1
www.ti.com............................................................................................................................................... SLVS786A – NOVEMBER 2007 – REVISED MARCH 2009
Fixed Frequency, 99% Duty Cycle Peak Current Mode
Notebook System Power Controller
Notebook Computer System and I/O Bus
2
Input Voltage Range: 4.5 V to 28 V
Point of load in LCD TV, MFP
Output Voltage Range: 1 V to 12 V
Selectable Light Load Operation (Continuous /
Auto Skip / Out-Of-Audio Skip)
The TPS51221 is a dual synchronous buck regulator
Programmable Droop Compensation
controller with 2 LDOs. It is optimized for 5-V/3.3-V
Voltage Servo Adjustable Soft Start
system
controller,
enabling
designers
to
cost
200 kHz to 1 MHz Fixed Frequency PWM
effectively complete 2-cell to 4-cell notebook system
power
supply.
The
TPS51221
supports
high
Current Mode Architecture
efficiency, fast transient response and 99% duty cycle
180° Phase Shift Between Channels
operation. It supports supply input voltage ranging
Resistor or Inductor DCR Current Sensing
from 4.5 V to 28 V, and output voltages from 1 V to
12 V. Peak current mode supports stability operation
Powergood Output for each channel
with lower ESR capacitor and output accuracy. The
OCL/OVP/UVP/UVLO protections
high duty (99%) operation and wide input/ output
Current Monitor Output for CH1
voltage range supports flexible design for small
Thermal Shutdown (Non-latch)
mobile PCs and a wide variety of other applications.
The fixed frequency can be adjusted from 200 kHz to
Output Discharge Function (Disable option)
1MHz by a resistor, and each channel runs 180° out
Integrated Boot Strap MOSFET Switch
of phase. The TPS51221 can also synchronize to the
QFN32 (RTV)
external clock, and the interleaving ratio can be
adjusted by its duty. The TPS51221 is available in the
32-pin 5×5 QFN package and is specified from –40°C
to 85°C.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
Out-Of-Audio, PowerPAD are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2007–2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS51221RTVT | 功能描述:電流型 PWM 控制器 Fixed Freq Notebook Sys Pwr Dual Cntrlr RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| TPS51221RTVTG4 | 功能描述:電流型 PWM 控制器 Fixed Freq Notebook Sys Pwr Cntrlr RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| TPS51222 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller |
| TPS51222RTVR | 功能描述:電流型 PWM 控制器 Fixed-Freq,Notebook Sys Pwr Cntrlr RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| TPS51222RTVT | 功能描述:電流型 PWM 控制器 Fixed-Freq,Notebook Sys Pwr Cntrlr RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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