參數(shù)資料
型號(hào)： TPS51220ARTVR
廠(chǎng)商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： DUAL SWITCHING CONTROLLER, 333 kHz SWITCHING FREQ-MAX, PQCC32
封裝： 5 X 5 MM, PLASTIC, QFN-32
文件頁(yè)數(shù)： 1/53頁(yè)
文件大?。?/td> 1380K
代理商： TPS51220ARTVR
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2
3
4
24
23
22
21
DRVH2
VIN
VREG3
EN2
DRVH1
V5SW
RF
EN1
TPS51220A
(QFN32)
5
6
7
8
20
19
18
17
PGOOD2
SKIPSEL2
CSP2
CSN2
PGOOD1
SKIPSEL1
CSP1
CSN1
9
V
F
B
1
32
S
W
1
31
V
B
S
T
1
30
D
R
V
L
1
29
V
R
E
G
5
28
G
N
D
27
D
R
V
L
2
26
V
B
S
T
2
25
S
W
2
10
C
O
M
P
1
11
F
U
N
C
12
E
N
13
V
R
E
F
2
14
T
R
IP
15
C
O
M
P
2
16
V
F
B
2
VO1
5.0V
L1
C22
VBAT
PowerPAD
C 02
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
www.ti.com
SLUS897D – DECEMBER 2008 – REVISED FEBRUARY 2010
Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
Check for Samples: TPS51220A
1
FEATURES
2
Input Voltage Range: 4.5 V to 32 V
Powergood Output for Each Channel
Output Voltage Range: 1 V to 12 V
OCL/OVP/UVP/UVLO Protections
(OVP Disable Option)
Selectable Light Load Operation
(Continuous / Auto Skip / Out-Of-Audio Skip)
Thermal Shutdown (Non-Latch)
Programmable Droop Compensation
Output Discharge Function (Disable Option)
Voltage Servo Adjustable Soft Start
Integrated Boot Strap MOSFET Switch
200-kHz to 1-MHz Fixed-Frequency PWM
QFN-32 (RTV/RSN) Package
Selectable Current/ D-CAP Mode
APPLICATIONS
Architecture
Notebook Computer System and I/O Bus
180° Phase Shift Between Channels
Point of Load in LCD TV, MFP
Resistor or Inductor DCR Current Sensing
Adaptive Zero Crossing Circuit
DESCRIPTION
The TPS51220A is a dual synchronous buck regulator controller with two LDOs. It is optimized for 5-V/3.3-V
system controller, enabling designers to cost effectively complete 2-cell to 4-cell notebook system power supply.
The TPS51220A supports high efficiency, fast transient response, and 99% duty cycle operation. It supports
supply input voltage ranging from 4.5 V to 32 V, and output voltages from 1 V to 12 V. Two types of control
schemes can be chosen depending on the application. Peak current mode supports stability operation with lower
ESR capacitor and output accuracy. The D-CAP mode supports fast transient response. The high duty (99%)
operation and the wide input/output voltage range supports flexible design for small mobile PCs and a wide
variety of other applications. The fixed frequency can be adjusted from 200 kHz to 1 MHz by a resistor, and each
channel runs 180° out-of-phase. The TPS51220A can also synchronize to the external clock, and the interleaving
ratio can be adjusted by its duty. The TPS51220A is available in the 32-pin 5×5/4×4 QFN package and is
specified from –40°C to 85°C.
TYPICAL APPLICATION CIRCUIT
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, D-CAP, PowerPAD are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2008–2010, 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(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS51220ARTVT 功能描述:電流型 PWM 控制器 Fixed-Freq,Notebook Sys Pwr Controller RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)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(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
TPS51220ARTVT 制造商:Texas Instruments 功能描述:Controller IC
TPS51220ATRTVRQ1 功能描述:電流型 PWM 控制器 Current-Mode NB Sys Pwr Controller RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)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(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
TPS51220EVM 功能描述:電源管理IC開(kāi)發(fā)工具 TPS51220EVM Hi Perf Synch Buck RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類(lèi)型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
TPS51220RHBR 功能描述:電流型 PWM 控制器 Fixed Freq 99% Duty Cycle Peak Current RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)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(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
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