- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄368343 > PT5815N (Texas Instruments, Inc.) 20-A 3.3-V Input Adjustable Integrated Switching Regulator PDF資料下載
參數(shù)資料
| 型號(hào)： | PT5815N |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 20-A 3.3-V Input Adjustable Integrated Switching Regulator |
| 中文描述： | 20 - 3.3 - V輸入可調(diào)集成開關(guān)穩(wěn)壓器 |
| 文件頁數(shù)： | 4/11頁 |
| 文件大?。?/td> | 202K |
| 代理商： | PT5815N |
Application Notes
For technical support and more information, see inside back cover or visit www.ti.com
PT5800 & PT5810 Series
With the sense leads connected, the difference between
the voltage measured at
V
out
and
GND
pins, and that
measured from
Sense(+)
to
Sense(–)
, is the amount of IR
drop being compensated by the regulator. This should
be limited to 0.6 V. (0.3 V maximum between pins 17 &
18, and also between pins 8 & 9).
Note: The remote sense feature is not designed to compensate
for the forward drop of non-linear or frequency dependent
components that may be placed in series with the converter
output. Examples include OR-ing diodes, filter inductors,
ferrite beads, and fuses. When these components are enclosed
by the remote sense connections they are effectively placed
inside the regulation control loop, which can adversely affect
the stability of the regulator.
Over-Current Protection
To protect against load faults, the regulators incorporate
output over-current protection. Applying a load that
exceeds the regulator’s over-current threshold (see data
sheet specifications) will cause the regulated output to
shut down. Following shutdown the ISR will periodically
attempt to recover by initiating a soft-start power-up.
This is often described as a “hiccup” mode of operation,
whereby the module continues in the cycle of successive
shutdown and power up until the load fault is removed.
During this period, the average current flowing into the
fault is significantly reduced. Once the fault is removed,
the converter automatically recovers and returns to nor-
mal operation.
Over-Temperature Protection
An on-board temperature sensor protects the module’s
internal circuitry against excessively high temperatures.
A rise in the internal temperature may be the result of a
drop in airflow, or a high ambient temperature. If the
internal temperature exceeds the OTP threshold (see
data sheet specifications), the regulator’s
Inhibit*
control
is automatically pulled low. This disables the regulator,
allowing the output voltage to drop to zero as the exter-
nal output capacitors are discharged by the load circuit.
The recovery is automatic, and begins with a soft-start
power up. It occurs when the the sensed temperature
decreases by about 10 °C below the trip point.
Note: The over-temperature protection is a last resort mecha-
nism to prevent thermal stress to the regulator. Operation at
or close to the thermal shutdown temperature is not recom-
mended and will reduce the long-term reliability of the module.
Always operate the regulator within the specified Safe Operating
Area (SOA) limits for the worst-case conditions of ambient
temperature and airflow.
Differential Remote Sense
Connecting the
Sense(+)
and
Sense(-)
pins to the load
circuit allows the regulator to compensate for limited
amounts of ‘IR’ voltage drop. This voltage drop is caused
by current flowing through the connection resistance
between the regulator and the ‘point of regulation’ some
distance away. Leaving the sense pins disconnected will
not damage the regulator or load circuitry. An internal
15
resistor, connected between each sense pin and its
corresponding output node, keeps the output voltage in
regulation. However, it is important to connect
Sense(–)
to
GND
locally, as this provides a return path for the
regulator’s internal bias currents.
Operating Features and System Considerations
for the PT5800 & PT5810 Regulator Series
The PT5800 (5-V input) and the PT5810 (3.3-V input)
series of integrated switching regulators (ISRs) provide
step-down voltage conversion for output loads of up to
20 A.
Power up & Soft-Start Timing
Following either the application of a valid input source
voltage, or the removal of a ground signal to the
Inhihit*
control pin (with input power applied), the regulator will
initiate a soft-start power up. The soft start slows the
rate at which the output voltage rises, and also introduces a
short time delay, t
d
(approx. 2 ms). Figure 1-1 shows the
power-up characteristic of a PT5801 (3.3 V) with a 10-A
load.
Vo (2V/Div)
Vin (2V/Div)
HORIZ SCALE: 5ms/Div
t
d
Figure 1-1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PT5816A | 20-A 3.3-V Input Adjustable Integrated Switching Regulator |
| PT5812A | 20-A 3.3-V Input Adjustable Integrated Switching Regulator |
| PT5816C | 20-A 3.3-V Input Adjustable Integrated Switching Regulator |
| PT5816N | 20-A 3.3-V Input Adjustable Integrated Switching Regulator |
| PT6-12-40 | 150V Single N-Channel HEXFET Power MOSFET in a Super 247 (TO-274AA) package; Similar to IRFPS3815 with Lead Free Packaging |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PT5816 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:1V 20-A. 3.3-V Input Adjustable Step-Down ISR |
| PT5816A | 功能描述:REG 1.0V 20A 3.3VIN HORZ RoHS:否 類別:電源 - 板載 >> DC DC Converters 系列:PT5810 設(shè)計(jì)資源:VI-200, VI-J00 Design Guide, Appl Manual 標(biāo)準(zhǔn)包裝:1 系列:* 類型:隔離 輸出數(shù):1 電壓 - 輸入（最小）:55V 電壓 - 輸入（最大）:100V Voltage - Output 1:15V Voltage - Output 2:- Voltage - Output 3:- 電流 - 輸出（最大）:* 電源（瓦） - 制造商系列:200W 電壓 - 隔離:* 特點(diǎn):* 安裝類型:通孔 封裝/外殼:9-FinMod 尺寸/尺寸:4.60" L x 1.86" W x 0.79" H（116.8mm x 47.2mm x 20.1mm） 包裝:散裝 工作溫度:-55°C ~ 85°C 效率:* 電源（瓦特）- 最大:* |
| PT5816C | 功能描述:REG 1.0V 20A 3.3VIN SMD RoHS:否 類別:電源 - 板載 >> DC DC Converters 系列:PT5810 設(shè)計(jì)資源:VI-200, VI-J00 Design Guide, Appl Manual 標(biāo)準(zhǔn)包裝:1 系列:* 類型:隔離 輸出數(shù):1 電壓 - 輸入（最?。?55V 電壓 - 輸入（最大）:100V Voltage - Output 1:15V Voltage - Output 2:- Voltage - Output 3:- 電流 - 輸出（最大）:* 電源（瓦） - 制造商系列:200W 電壓 - 隔離:* 特點(diǎn):* 安裝類型:通孔 封裝/外殼:9-FinMod 尺寸/尺寸:4.60" L x 1.86" W x 0.79" H（116.8mm x 47.2mm x 20.1mm） 包裝:散裝 工作溫度:-55°C ~ 85°C 效率:* 電源（瓦特）- 最大:* |
| PT5816N | 功能描述:REG 1.0V 20A 3.3VIN VERT RoHS:否 類別:電源 - 板載 >> DC DC Converters 系列:PT5810 設(shè)計(jì)資源:VI-200, VI-J00 Design Guide, Appl Manual 標(biāo)準(zhǔn)包裝:1 系列:* 類型:隔離 輸出數(shù):1 電壓 - 輸入（最?。?55V 電壓 - 輸入（最大）:100V Voltage - Output 1:15V Voltage - Output 2:- Voltage - Output 3:- 電流 - 輸出（最大）:* 電源（瓦） - 制造商系列:200W 電壓 - 隔離:* 特點(diǎn):* 安裝類型:通孔 封裝/外殼:9-FinMod 尺寸/尺寸:4.60" L x 1.86" W x 0.79" H（116.8mm x 47.2mm x 20.1mm） 包裝:散裝 工作溫度:-55°C ~ 85°C 效率:* 電源（瓦特）- 最大:* |
| PT581730 | 制造商:MA-COM 制造商全稱:M/A-COM Technology Solutions, Inc. 功能描述:Miniature Relay |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。