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參數(shù)資料
| 型號： | SIP41109 |
| 廠商： | Vishay Intertechnology,Inc. |
| 元件分類： | MOSFETs |
| 英文描述： | Half-Bridge N-Channel MOSFET Driver for DC/DC Conversion |
| 中文描述： | 用于直流／直流轉(zhuǎn)換的半橋N溝道MOSFET驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 5/7頁 |
| 文件大?。?/td> | 101K |
| 代理商： | SIP41109 |
SiP41109/41110
Vishay Siliconix
New Product
Document Number: 73023
S-51104—Rev. A, 13-Jun-05
www.vishay.com
5
FUNCTIONAL BLOCK DIAGRAM
Figure 1.
PWM
GND
V
CC
UGATE
PHASE
LGATE
V
DRL
BOOT
V
(2.5 V)
+
UVLO
OTP
Tri-State
Detect
PV
CC
+8-V Linear
Regulator
Linear
Regulator
+5 V
SiP41109
V
DRL
= V
CC
(12 V)
SiP41110
V
DRL
= PV
CC
(8 V)
UVLO
DETAILED OPERATION
PWM/Tri-State Enable
The PWM pin controls the switching of the external MOSFETs.
The driver logic operates in a noninverting configuration. The
PWM input stage should be driven by a signal with fast
transition times, like those provided by a PWM controller or
logic gate, (<200 ns). The PWM input functions as a logic input
and is not intended for applications where a slow changing
input voltage is used to generate a switching output when the
input switching threshold voltage is reached.
Shutdown
The SiP41109/41110 enters shutdown mode when the signal
driving PWM enters the tri-state window for more than 240 ns.
The shutdown state is removed when the PWM signal moves
outside the tri-state window. If the PWM is left open, the pin is
held to 2.5 V by an internal voltage divider, thus forcing the
tri-state condition.
Low-Side Driver
In the SiP41109, the low-side driver voltage is supplied by V
CC
.
In the SiP41110, the low-side driver voltage is supplied by
PV
CC
. During shutdown, LGATE is held low.
High-Side Driver
The high-side driver is isolated from the substrate to create a
floating high-side driver so that an n-channel MOSFET can be
used for the high-side switch. The high-side driver voltage is
supplied by PV
CC
. The voltage is maintained by a floating
bootstrap capacitor, which is continually recharged by the
switching action of the output. During shutdown UGATE is
held low.
Gate Drive Voltage (PV
CC
) Regulator
An integrated 80-mA, 8-V regulator supplies voltage to the
PV
CC
pin and it current limits at 200 mA typical when the
output is shorted to ground. A capacitor (1 F minimum) must
be connected to the PV
CC
pin to stabilize the regulator output.
The voltage on PV
CC
is supplied to the integrated bootstrap
diode. PV
CC
is used to recharge the bootstrap capacitor and
powers the SiP41110 low-side driver. PV
CC
pin can be
externally connected to V
CC
to bypass the 8-V regulator and
increase high-side gate drive to 12 V. If the PV
CC
pin is
connected to V
CC
the system voltage should not exceed 43V.
Bootstrap Circuit
The internal bootstrap diode and an external bootstrap
capacitor supply voltage to the BOOT pin. An integrated
bootstrap diode replaces the external diode normally needed
for the bootstrap circuit; only a capacitor is necessary to
complete the bootstrap circuit. The bootstrap capacitor is
sized according to,
C
BOOT
= (Q
GATE
/( V
BOOT
V
PHASE
)) x 10
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SIP41109DB | Half-Bridge N-Channel MOSFET Driver for DC/DC Conversion |
| SIP41109DY-T1-E3 | Half-Bridge N-Channel MOSFET Driver for DC/DC Conversion |
| SIP41110DB | Half-Bridge N-Channel MOSFET Driver for DC/DC Conversion |
| SIP41110DY-T1-E3 | Half-Bridge N-Channel MOSFET Driver for DC/DC Conversion |
| SIP41110 | Box-shaped pin header, Discrete wire crimping connection, Discrete wire connectors; HRS No: 536-0550-2 00; No. of Positions: 10; Connector Type: Wire; Contact Gender: Female; Contact Spacing (mm): 1.25; Terminal Pitch (mm): 1.25; Current Rating(Amps)(Max.): 1; Operating Temperature Range (degrees C): -35 to 85; General Description: Housing; Double row; Crimping |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SIP41109DB | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Half-Bridge N-Channel MOSFET Driver for DC/DC Conversion |
| SIP41109DY-T1-E3 | 功能描述:功率驅(qū)動(dòng)器IC H-Bridge N-Ch MOSFET RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| SIP41110 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Half-Bridge N-Channel MOSFET Driver for DC/DC Conversion |
| SIP41110DB | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Half-Bridge N-Channel MOSFET Driver for DC/DC Conversion |
| SIP41110DY-T1-E3 | 功能描述:功率驅(qū)動(dòng)器IC H-Bridge N-Ch MOSFET RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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