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参数资料
| 型号： | SIP11203DLP-T1-E3 |
| 厂商： | Vishay Siliconix |
| 文件页数： | 13/18页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR ISO PWM MLP44-16 |
| 标准包装： | 2,500 |
| PWM 型： | 控制器 |
| 输出数： | 1 |
| 电源电压： | 5.5 V ~ 13 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | PowerPAK? MLP44-16 |
| 包装： | 带卷 (TR) |
SiP11203, SiP11204
Vishay Siliconix
The Figure 8 below shows how the rising edge delay is
implemented in conjunction with the Si9122 and allows
the effective BBM2 and BBM4 falling delays to be
modified independently of rising delays BBM1 and
BBM3. For definition of the BBM delays please see the
Si9122 datasheet .
BBM1
PWM
BBM2
PWM
BBM3
PWM
BBM4
PWM
DL
OUT A
DL
OUT A
Rising edge
delay set b y R DEL
Figure 8. The delay of SiP11203 and SiP11204 gate-drive output signals compensate the break-before-make switching action
discrepancies arising from propagation delays
OUTPUT OVER-VOLTAGE PROTECTION
The SiP11203/SiP11204 provide output over-voltage
protection (OVP) by means of a dedicated internal
comparator. One input of the OVP comparator is
brought out to the OVP IN pin, and the other is returned
to an internal reference voltage that is fixed at 120 %
of the 1.225 V V REF value, or 1.47 V. A voltage in
excess of 1.47 V at the OVP IN pin indicates an OVP
fault.
The OVP circuitry operates in two different ways,
depending upon whether the SiP11203/SiP11204 is in
start-up mode, or in normal operation. In this context,
start-up mode is defined as device operation during
that period for which V REF is less than 90 % of its 1.225 V
value, or 1.1 V.
Start-Up Mode:
If the 1.47 V OVP threshold is exceeded during start-
up, the driver outputs OUTA and OUTB are held low
until the voltage on the V REF pin has exceeded 1.1 V.
The driver outputs are then released to respond to INA
and INB.
Normal Operation Mode:
If the OVP threshold is exceeded, or remains
exceeded, after V REF has reached 1.1 V, the OVP latch
will be set. This will cause the driver outputs to be
Document Number: 73868
S11-0975–Rev. C, 16-May-11
forced high for SiP11203, or forced low for SiP11204.
At the same time, an on-chip transistor will discharge
the bypass capacitor at the V REF pin towards ground.
The OVP latch is reset when the logical and of two
conditions:
? The voltage on the V REF pin must be ? ? 20 % (245 mV)
of its nominal 1.225 V level, to ensure an orderly
soft-start cycle when operation resumes, and
? The voltage at the OVP IN pin must be 1.1 V,
indicating that the OVP fault has been cleared.
W hen the OVP latch is reset, the SiP11203/SiP11204
will release their outputs, and return to normal
operation via a soft-start cycle.
To prevent spurious activation of the over-voltage
function, the over-voltage condition must be present for
five switching instances, where a switching instance is
defined as activity on either IN A or IN B . On the fifth
switching instance the overvoltage condition is latched.
If the over voltage condition disappears the IC will not
recognize an over-voltage as being present and the
counter will be reset to zero.
Note that the OVP IN threshold voltage is derived from
the internal 2.5 V reference voltage V REFINT , which is
derived from V IN , and therefore is not delayed by the
rise time of either V L or V REF .
www.vishay.com
13
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SIP11204DLP-T1-E3 | 功能描述:开关变换器、稳压器与控制器 Sec Sync Rect Ctrl w/Overvolt Protect RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| SIP11205 | 制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:Feed-Forward Controller with Primary MOSFET Drivers for Intermediate Bus Converters |
| SIP11205DLP-T1-E3 | 功能描述:开关变换器、稳压器与控制器 Feed-Fwd Controller with MOSFET Drivers RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| SIP11205DQP-T1-E3 | 功能描述:开关变换器、稳压器与控制器 Feed-Fwd Controller with MOSFET Drivers RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| SIP11206 | 制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:Half-Bridge Controller with Primary MOSFET Drivers for Intermediate Bus Converters |
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