参数资料
| 型号： | TEA1752LT/N1,518 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 20/34页 |
| 文件大小： | 0K |
| 描述： | IC CTLR SMPS SW MODE 16SOIC |
| 标准包装： | 1 |
| 输出隔离： | 隔离 |
| 输入电压： | 14 V ~ 38 V |
| 功率（瓦特）： | 600mW |
| 工作温度： | -40°C ~ 150°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SO |
| 包装： | 标准包装 |
| 其它名称： | 568-5962-6 |
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NXP Semiconductors
TEA1752T; TEA1752LT
V o ( OVP ) = ----------- ( I ovp ( FBAUX ) × R FBAUX + V clamp ( FBAUX ) )
GreenChip III SMPS control IC
The output voltage V o(OVP) at which the OVP function trips, can be set by the
demagnetization resistor, R FBAUX :
Ns
N aux
where N s is the number of secondary turns and N aux is the number of auxiliary turns of the
transformer. The current I ovp(FBAUX) is internally trimmed.
The value of R FBAUX can be adjusted to the turns ratio of the transformer, making an
accurate OVP detection possible.
7.3.9 Overcurrent protection (FBSENSE pin)
The primary peak current in the transformer is accurately measured cycle-by-cycle using
external sense resistor R SENSE2 . The OCP circuit limits the voltage on pin FBSENSE to an
internal level (see Section 7.3.3 ). The OCP detection is suppressed during the leading
edge blanking period, t leb , to prevent false triggering caused by switch-on spikes.
t leb
OCP level
V FBSENSE
t
014aaa022
Fig 16. OCP leading edge blanking
7.3.10 Overpower protection
During the primary stroke of the flyback converter its input voltage is measured by sensing
the current that is drawn from pin FBAUX.
This information is used to adjust the peak drain current of the flyback converter
measured via pin FBSENSE. The internal compensation is such that an almost input
voltage independent maximum output power can be realized.
TEA1752T_LT
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 02 — 24 June 2010
? NXP B.V. 2010. All rights reserved.
20 of 34
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TEA1752T | 制造商:未知厂家 制造商全称:未知厂家 功能描述:The TEA1752T and TEA1752LT combine a controller for Power Factor Correction (PFC) and a flyback controller. |
| TEA1752T/1791/DB/90W,598 | 制造商:NXP Semiconductors 功能描述:- Boxed Product (Development Kits) 制造商:NXP Semiconductors 功能描述:90W notebook adapter Ref |
| TEA1752T/N1,518 | 功能描述:DC/DC 开关控制器 IC CTLR SMPS SW MODE RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TEA1753 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:The GreenChip III is the third generation of green Switched Mode Power Supply (SMPS) controller ICs. |
| TEA1753LT/N1,518 | 功能描述:DC/DC 开关控制器 GreenChip III SMPS control IC RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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