参数资料
| 型号： | TEA1752LT/N1,518 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 15/34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
f sw(fb)max
flyback
TEA1752T; TEA1752LT
GreenChip III SMPS control IC
switching
frequency
PFC off
frequency
PFC on
discontinuous
with valley
Fig 9.
reduction
1.5 V
Frequency control of flyback part
switching
V FBCTRL
quasi-resonant
014aaa746
shows an oscillation with a frequency of approximately --------------------------------------------------- where L p is
7.3.2 Valley switching (HV pin)
Figure 10 shows that a new cycle starts when the external MOSFET is activated. After the
on-time (determined by the FBSENSE voltage and the FBCTRL voltage), the MOSFET is
switched off and the secondary stroke starts. After the secondary stroke, the drain voltage
1
( 2 × π × ( L p × C d ) )
the primary self-inductance of the flyback transformer and C d is the capacitance on the
drain node.
When the internal oscillator voltage is high again and the secondary stroke has ended, the
circuit waits for the lowest drain voltage before starting a new primary stroke. Figure 10
shows the drain voltage, valley signal, secondary stroke signal and the internal oscillator
signal.
Valley switching allows high frequency operation as capacitive switching losses are
reduced (see Equation 1 ). High frequency operation makes small and cost-effective
magnetics possible.
? P = 1 --- × C × V 2 × f ?
? 2 d ?
(1)
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.
15 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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