- 您现在的位置：买卖IC网 > PDF目录69003 > L6716 (STMICROELECTRONICS) DUAL SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, QCC48 PDF资料下载
参数资料
| 型号： | L6716 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, QCC48 |
| 封装： | 7 X 7 MM, 1 MM HEIGHT, ROHS COMPLIANT, VFQFP-48 |
| 文件页数： | 35/57页 |
| 文件大小： | 829K |
| 代理商： | L6716 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页当前第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页
Output voltage monitor and protections
L6716
40/57
Doc ID 14521 Rev 3
18.3
Overvoltage and programmable OVP
Once VCC crosses the turn-ON threshold and the device is enabled (OUTEN = 1), L6716
provides an overvoltage protection: when the voltage sensed by VSEN overcomes the OVP
threshold (OVPTH), the controller:
●
Permanently turns OFF all the high-side MOSFETs.
●
Permanently turns ON all the low-side MOSFETs (PWM4 is forced low when external
driver is used) in order to protect the load.
●
Drives the OSC/ FAULT pin high (3.3 V typ).
●
Power supply or OUTEN pin cycling is required to restart operations.
The OVP threshold can be also programmed through the OVP pin: leaving the pin floating, it
is internally pulled-up and the OVP threshold is set to VID+150 mV (typ).
Connecting the OVP pin to SGND through a resistor ROVP, the OVP threshold becomes the
voltage present at the pin. Since the OVP pin sources a constant IOVP = 20 A current (see
Table 5), the programmed voltage becomes:
Filter OVP pin with 100 pF (max) vs. SGND.
Overvoltage protections is always active during the soft-start, as shown in the following
picture:
Figure 24.
OVP threshold during soft-start for tracking (left) and fixed (right) mode
Note:
When VR10/VR11 table is selected (OVP pin to SGND) the OVP threshold becomes 1.800
V (typ) fixed.
Table 9.
Overvoltage protection threshold
OVP pin
Thresholds
OVP threshold
Floating
Tracking
OVPTH = VID + 175 mV (typ)
ROVP to SGND
Fixed
OVPTH = ROVP * 20 μA (typ)
OVP
TH
R
OVP
20
μA
=
R
OVP
TH
20
μA
--------------------
=
OUTEN
SS_END
VOUT
t
1.240V
t
OVPTH
VID+175mV
OUTEN
SS_END
VOUT
t
ROVP * 20uA
t
OVPTH
相关PDF资料 |
PDF描述 |
|---|---|
| L6722 | SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, QCC36 |
| L6722TR | SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, QCC36 |
| L9407F | SPECIALTY ANALOG CIRCUIT, PSFM8 |
| L9942 | STEPPER MOTOR CONTROLLER, PDSO36 |
| LA5681FN | SWITCHING CONTROLLER, 520 kHz SWITCHING FREQ-MAX, QCC48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| L6716TR | 功能描述:开关变换器、稳压器与控制器 2/3/4 phase CNTRL Embedded 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 |
| L6717 | 制造商:STMicroelectronics 功能描述:High-Efficiency Hybrid AM2r2 Controller 48-Pin VFQFPN Tray 制造商:STMicroelectronics 功能描述:HANDHELD & COMPUTER PM - Trays 制造商:STMicroelectronics 功能描述:High EFF Hybrid CTRL I2C Embedded Driver |
| L6717A | 制造商:STMicroelectronics 功能描述:CPU Power Supply Controller Tray 制造商:STMicroelectronics 功能描述:HANDHELD & COMPUTER PM - Trays 制造商:STMicroelectronics 功能描述:High EFF Hybrid CTRL I2C Embedded Driver |
| L6717ATR | 制造商:STMicroelectronics 功能描述:CPU Power Supply Controller T/R 制造商:STMicroelectronics 功能描述:HANDHELD & COMPUTER PM - Tape and Reel 制造商:STMicroelectronics 功能描述:High EFF Hybrid CTRL I2C Embedded Driver |
| L6717TR | 功能描述:开关变换器、稳压器与控制器 High-Efficienc AM2r2 Hybrid Controller 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 |
发布紧急采购，3分钟左右您将得到回复。