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參數(shù)資料
| 型號： | TPS5210PWPG4 |
| 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)： | 17/35頁 |
| 文件大?。?/td> | 846K |
| 代理商： | TPS5210PWPG4 |
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TPS5210
PROGRAMMABLE SYNCHRONOUS BUCK REGULATOR CONTROLLER
SLVS171A SEPTEMBER 1998 REVISED MAY 1999
24
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
droop compensation (continued)
Then, calculate R9:
R9
+
V
IOUT(Max)
V
DROOP
* 1
R10
Where VDROOP = Desired droop voltage
At full load, the output voltage will be:
V
O +
V
REF
1
) R2
R3
* V
DROOP
using the TPS5210 when both 12 V and 5 V are available
When both 12 V and 5 V are available, several components can be removed from the basic schematic shown
above. R1, R4, and C9 are no longer required if 5 V is brought in directly to INHIBIT and LODRV. However, if
undervoltage lockout for the 5-V input is desired, R1 and R4 can be used to set the startup setpoint. The INHIBIT
pin trip level is 2.1 V. Select R4:
()
≤
×
≤
<<
k
nA
V
I
V
R
Max
INH
210
100
1
.
2
4
)
(
Then, set the 5-V UVLO trip level with R1:
()
4
2
5
1
R
V
R
Trip
×
=
R1
R4
INHIBIT
LODRV
Figure 21. 5-V Input with UVLO
using the TPS5210 when only 5 V is available
The TPS5210 controller requires 12 V for internal control of the device. If an external source for 12 V is not
available, a small on-board source must be included in the design. Total 12-V current is very small, typically
about 20 mA, so even a small charge pump can be used to generate the supply voltage. The power stage is
not voltage dependent, but component values must be selected for 5-V inputs and the frequency of operation
is dependent upon the power stage input voltage.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS5210PWPR | 功能描述:DC/DC 開關(guān)控制器 Synch Buck Cntrlr Volume Control RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TPS5210PWPRG4 | 功能描述:DC/DC 開關(guān)控制器 Synch Buck Cntrlr Volume Control RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| 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(biāo)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 |
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