- 您現(xiàn)在的位置：買賣IC網 > PDF目錄378286 > ADP3415LRM-REEL (ANALOG DEVICES INC) Dual MOSFET Driver with Bootstrapping PDF資料下載
參數(shù)資料
| 型號： | ADP3415LRM-REEL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | MOSFETs |
| 英文描述： | Dual MOSFET Driver with Bootstrapping |
| 中文描述： | HALF BRDG BASED MOSFET DRIVER, PDSO10 |
| 封裝： | MO-187BA, MSOP-10 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大小： | 166K |
| 代理商： | ADP3415LRM-REEL |
REV. B
ADP3415
–9–
Shutdown
For optimal system power management, when the output voltage
is not needed, the ADP3415 can be shut down to conserve power.
When the
SD
pin is high, the ADP3415 is enabled for normal
operation. Pulling the
SD
pin low forces the DRVH and DRVL
outputs low, turning the buck converter OFF and reducing the
VCC supply current to less than 40
μ
A.
Undervoltage Lockout
The undervoltage lockout (UVLO) circuit holds both FET
driver outputs low during VCC supply ramp-up. The UVLO
logic becomes active and in control of the driver outputs at a
supply voltage of no greater than 1.5 V. The UVLO circuit
waits until the VCC supply has reached a voltage high enough
to bias logic level FETs fully ON, around 4.1 V, before releas-
ing control of the drivers to the control pins.
Thermal Shutdown
The thermal shutdown circuit protects the ADP3415 against
damage due to excessive power dissipation. Under extreme
conditions, high ambient temperature and high power dissipa-
tion, the die temperature may rise up to the thermal shutdown
threshold of 165
°
C. If the die temperature exceeds 165
°
C, the
thermal shutdown circuit will turn the output drivers OFF. The
drivers remain disabled until the junction temperature has
decreased by 10
°
C, at which point the drivers are again enabled.
APPLICATION INFORMATION
Supply Capacitor Selection
For the supply input (VCC) of the ADP3415, a local bypass
capacitor is recommended to reduce the noise and to supply
some of the peak currents drawn. Use a 10
μ
F MLC capacitor.
Keep the ceramic capacitor as close as possible to the ADP3415.
Multilayer ceramic (MLC) capacitors provide the best combina-
tion of low ESR and small size and can be obtained from the
following vendors:
Murata
GRM235Y5V106Z16
Taiyo-Yuden
EMK325F106ZF
Tokin
C23Y5V1C106ZP
www.murata.com
www.t-yuden.com
www.tokin.com
Bootstrap Circuit
The bootstrap circuit requires a charge storage capacitor, C
BST
,
and a Schottky diode, D1, as shown in Figure 2. Selecting these
components can be done after the high-side FET has been chosen.
The bootstrap capacitor must have a voltage rating that is able
to handle the maximum battery voltage plus 5 V. The capaci-
tance is determined using the following equation
C
Q
V
BST
GATE
BST
=
(1)
where
Q
GATE
is the total gate charge of the high-side FET,
and
V
BST
is the voltage droop allowed on the high-side FET
drive. For example, the IRFR8503 has a total gate charge of
about 15 nC. For an allowed droop of 150 mV, the required
bootstrap capacitance is 100 nF. Use an MLC capacitor.
A Schottky diode is recommended for the bootstrap diode due
to its low forward drop, which maximizes the drive available for
the high-side FET. The bootstrap diode must also be able to
withstand the maximum battery voltage plus 5 V. The average
forward current can be estimated by
×
I
Q
f
F AVG
(
GATE
MAX
)
≈
(2)
where
f
MAX
is the maximum switching frequency of the controller.
Delay Resistor Selection
The delay resistor, R
DLY
, is used to add an additional delay
when the low-side FET drive turns off and when the high-side
drive starts to turn on. The delay resistor programs a specified
additional delay besides the 20 ns of fixed delay.
Printed Circuit Board Layout Considerations
Use the following general guidelines when designing printed
circuit boards:
1. Trace out the high current paths and use short, wide traces
to make these connections.
2. Locate the VCC bypass capacitor as close as possible to the
VCC and GND pins.
相關PDF資料 |
PDF描述 |
|---|---|
| ADP3415LRM-REEL7 | Dual MOSFET Driver with Bootstrapping |
| ADP3415LRMZ-REEL | Dual MOSFET Driver with Bootstrapping |
| ADSP-21991 | SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs |
| ADSP-21991BBC | SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs |
| ADSP-21991BST | SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ADP3415LRM-REEL7 | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
| ADP3415LRMZ-REEL | 功能描述:IC MOSFET DVR DUAL BOOTST 10MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅動器 - 外部開關 系列:- 標準包裝:50 系列:- 配置:低端 輸入類型:非反相 延遲時間:40ns 電流 - 峰:9A 配置數(shù):1 輸出數(shù):1 高端電壓 - 最大（自引導啟動）:- 電源電壓:4.5 V ~ 35 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:TO-263-6，D²Pak（5 引線+接片），TO-263BA 供應商設備封裝:TO-263 包裝:管件 |
| ADP3415LRMZ-RL7 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Dual MOSFET Driver with Bootstrapping |
| ADP3416 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Dual Bootstrapped MOSFET Driver |
| ADP3416JR | 制造商:Rochester Electronics LLC 功能描述:DUAL MOSFET DRIVER - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復。