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參數資料
| 型號： | TPS5124DBTR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 1.5 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO30 |
| 封裝： | GREEN, PLASTIC, TSSOP-30 |
| 文件頁數： | 1/19頁 |
| 文件大小： | 445K |
| 代理商： | TPS5124DBTR |
TPS5124
SLUS571 SEPTEMBER 2003
DUAL CHANNEL, SYNCHRONOUS
STEPDOWN PWM CONTROLLER
1
www.ti.com
FEATURES
D High Efficiency No Current Sense Resistor
Required, RDS(on) Overcurrent Detection with
Temperature Compensation
D Adjustable Output Voltage Down to 0.9 V
D Voltage-Mode PWM Control: Maximum
500-kHz Operation
D 180° Out-of-Phase Control
D Individual Standby and Soft-Start for Each
Channel Easy Power Sequencing
D Overvoltage and Undervoltage Protection
D Built-In Boot-Strap Diode
D Built-In 5-V Linear Regulator
D Accurate ± 1% 0.85-V Reference
APPLICATIONS
D Consumer Game Systems
D DSP Applications
D Digital Set-Top Box
D VGA and Sound Cards
DESCRIPTION
The TPS5124 is dual independent high efficiency
synchronous step-down controller. It supports a
low-voltage/high-current power supply applica
tions that use either a 5-V or 12-V bus voltage.
Since both controllers of the TPS5124 operate
180 degree out-of-phase, the input current ripple
is
minimized
resulting
in
a
smaller
input
capacitance and reduced power supply cost.
The
current
protection
circuit
detects
the
drain-to-source voltage drop across the high-side
and
low-side
power
MOSFET
while
it
is
conducting. Also, the current protection circuit has
a temperature coefficient to compensate for the
RDS(on) variation
of
the
MOSFET.
This
resistor-less current protection and built-in boost
diode simplify the system design and reduces the
external parts count. Other features such as
undervoltage lockout, overvoltage, undervoltage,
and
programmable
short-circuit
protection
promote system reliability.
VO1
VO2
VIN
1
2
3
4
5
6
7
8
9
10
11
12
TPS5124
FB2
SS2
N/C
SCP
STBY2
STBY1
REF
GND
N/C
CT
SS1
FB1
17
16
20
19
18
VLSD
VREF5
LH2
OUT2_U
LL2
23
22
21
26
25
24
29
28
27
30
OUT2_D
OUTGND2
TRIP2
VCC
TRIP1
OUTGND1
OUT1_D
LL1
OUT1_U
LH1
13
14
15 INV2
INV1
N/C
VIN
VO2
VIN
VO1
VIN
UDG03123
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
2003, Texas Instruments Incorporated
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.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS5124DBTRG4 | 功能描述:DC/DC 開關控制器 Dual Ch Sync Step-Down RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| TPS5124EVM | 功能描述:電源管理IC開發工具 Dual Synch Buck Contr Eval Mod RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS5124RGER | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL SYNCHRONOUS STEP-DOWN CONTROLLER FOR LOW VOLTAGE POWER RAILS |
| TPS5124RGET | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL SYNCHRONOUS STEP-DOWN CONTROLLER FOR LOW VOLTAGE POWER RAILS |
| TPS51275 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Dual Synchronous, Step-Down Controller with 5-V and 3.3-V LDOs |
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