- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄68419 > TPS5210PWPRG4 (TEXAS INSTRUMENTS INC) 2 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO28 PDF資料下載
參數(shù)資料
| 型號： | TPS5210PWPRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | GREEN, PLASTIC, HTSSOP-28 |
| 文件頁數(shù)： | 16/35頁 |
| 文件大?。?/td> | 846K |
| 代理商： | TPS5210PWPRG4 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁當前第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁
TPS5210
PROGRAMMABLE SYNCHRONOUS BUCK REGULATOR CONTROLLER
SLVS171A SEPTEMBER 1998 REVISED MAY 1999
23
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
current limit
Current limit can be implemented using the on-resistance of the upper FETs as the sensing elements. Select
R8:
()
≤
×
≤
<<
nA
V
I
V
R
OCP
Bias
OCP
10 k
100
1
.
0
8
)
(
(A recommended value is 1 k
)
The IOUT signal is used to drive the current limit and droop-circuit dividers. The voltage at IOUT at the output
current trip point will be:
()
I
NumFETs
TF
R
V
Trip
O
ON
DS
Trip
IOUT
)
(
)
(
)
(
2
×
=
Where NumFETS = Number of upper FETS in Parallel.
TF = RDS(ON) temperature correction factor.
IO(Trip) = Desired output current trip level (A).
Calculate R7 using:
R7
+
V
IOUT(Trip)
0.1 V
* 1
R8
Note that since RDS(ON) of MOSFETs can vary from lot to lot and with temperature, tight current-limit control (less
than 1.5 x IO) using this method is not practical. If tight control is required, an external current-sense resistor
in series with the drain of the upper FET can be used with HISENSE and LOSENSE connected across the
resistor.
droop compensation
Droop compensation is used to reduce the output voltage range during load transients by increasing the output
voltage setpoint toward the upper tolerance limit during light loads and decreasing the voltage setpoint toward
the lower tolerance limit during heavy loads. This allows the output voltage to swing a greater amount and still
remain within the tolerance window. The maximum droop voltage is set with R9 and R10. Select R10:
()
≤
×
≤
<<
nA
V
I
V
R
Max
DROOP
Bias
Min
DROOP
1 k
100
01
.
0
10
)
,
(
)
(
(Again, a value of 1 k
is recommended)
The voltage at IOUT during normal operation (0 to 100% load) will vary from 0 V up to:
()
I
NumFETs
TF
R
V
Max
O
ON
DS
Max
IOUT
)
(
)
(
)
(
2
×
=
Where IO(Max) = Maximum output load current (A).
相關PDF資料 |
PDF描述 |
|---|---|
| TPS5210DWG4 | 2 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO28 |
| TPS5210PWPG4 | 2 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO28 |
| TPS5210PWPR | 2 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO28 |
| TPS5210PWP | 2 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO28 |
| TPS5300DAPR | 3.3 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO32 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TPS5211 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:HIGH FREQUENCY PROGRAMMABLE HYSTERETIC REGULATOR CONTROLLER |
| TPS5211PWP | 功能描述:IC REG CTRLR BUCK PWM 28-HTSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
| TPS5211PWPR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| TPS524 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PHOTOVOLTAIC CELL FOR THERMOPILE DETECTION |
| TPS5300 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:MOBILE CPU POWER SUPPLY CONTROLLER |
發(fā)布緊急采購，3分鐘左右您將得到回復。