参数资料
| 型号： | TEA1753LT/N1,518 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 13/32页 |
| 文件大小： | 0K |
| 描述： | IC CTLR SMPS SW MODE 16SO |
| 标准包装： | 2,500 |
| 系列： | GreenChip™ III |
| 输出隔离： | 隔离 |
| 频率范围： | 100kHz ~ 150kHz，250kHz |
| 输入电压： | 16 V ~ 38 V |
| 输出电压： | 650V |
| 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： | 带卷 (TR) |
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NXP Semiconductors
TEA1753LT
HV start-up flyback controller with integrated PFC controller
7.2.12 PFC open-loop protection (VOSENSE pin)
The power factor correction circuit does not start switching until the voltage on the
VOSENSE pin is above the V th(ol)(VOSENSE) level. This feature protects the circuit from
open-loop and VOSENSE short-circuit.
7.2.13 Driver (PFCDRIVER pin)
The driver circuit to the gate of the power MOSFET has a current sourcing capability of
? 500 mA and a current sink capability of 1.2 A. These capabilities permit fast turn-on and
turn-off of the power MOSFET for efficient operation.
7.3 Flyback controller
The TEA1753LT includes a controller for a flyback converter. The flyback converter
operates in quasi-resonant or DCM with valley switching. The auxiliary winding of the
flyback transformer provides demagnetization detection and powers the IC after start-up.
7.3.1 Multimode operation
flyback
switching
frequency
125 kHz
frequency
86 kHz
reduction
48 kHz
PFC off
PFC on
I pmin
adjust
discontinuous
with valley
switching
quasi-resonant
output power
014aaa745
Fig 8.
Multimode operation flyback
At high output power the converter switches to quasi-resonant mode. The next converter
stroke starts after demagnetization of the transformer and detection of the valley. In
quasi-resonant mode switching losses are minimized. This minimization is achieved by
the converter only switching on when the voltage across the external MOSFET is at its
minimum (see also Section 7.3.2 ).
To prevent high frequency operation at low loads, the maximum switching frequency is
limited to 125 kHz. When the frequency limit is reached, the quasi-resonant operation
changes to DCM with valley skipping. This mode limits the MOSFET switch-on losses and
conducted EMI.
TEA1753LT
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 24 August 2012
? NXP B.V. 2012. All rights reserved.
13 of 32
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TEA1753T | 制造商:未知厂家 制造商全称:未知厂家 功能描述:The TEA1753T combines a controller for Power Factor Correction (PFC) and a flyback controller. |
| TEA1753T/N1 | 制造商:NXP Semiconductors 功能描述:SMPS CNTRL QR FLYBACK & QR PFCSO16 制造商:NXP Semiconductors 功能描述:SMPS CNTRL, QR FLYBACK & QR PFC,SO16 |
| TEA1753T/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 |
| TEA1753T/N1518 | 制造商:Rochester Electronics LLC 功能描述: 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述: |
| TEA1755LT/1Y | 制造商:NXP Semiconductors 功能描述:Switched Mode Power Supply Controller 16-Pin SOIC T/R 制造商:NXP Semiconductors 功能描述:TEA1755LT/SO16/REEL13DP//1 - Tape and Reel 制造商:NXP Semiconductors 功能描述:IC SMPS CONTROLLER 16SOIC |
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