参数资料
| 型号： | TEA1753LT/N1,518 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 16/32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
V sense(fb)max
0.65 V
TEA1753LT
HV start-up flyback controller with integrated PFC controller
FBSENSE
offset voltage
PFC off
PFC on
SENSE resistor
FBSENSE
flyback
frequency
reduction
flyback
discontinuous
or QR
peak voltage
peak voltage
flyback
cycle skip
mode
0.325 V
1.5 V
2.0 V
V FBCTRL
014aaa747
Fig 11. Peak current control of flyback
The driver output is latched in the logic, preventing multiple switch-on.
7.3.4 Demagnetization (FBAUX pin)
The system is always in QR or DCM. The internal oscillator does not start a new primary
stroke until the previous secondary stroke has ended.
Demagnetization features a cycle-by-cycle output short-circuit protection by immediately
lowering the frequency (longer off-time), thus reducing the power level.
Demagnetization recognition is suppressed during the first t sup(xfmr_ring) time of 2 ? s. This
suppression is necessary at low output voltages and at start-up. It is also required in
applications where the transformer has a large leakage inductance.
If the FBAUX pin is open-circuit or not connected, a fault condition is assumed and the
converter immediately stops. Operation restarts as soon as the fault condition is removed.
7.3.5 Flyback control/time-out (FBCTRL pin)
The FBCTRL pin is connected to an internal voltage source of 3.5 V using an internal
resistor of 3 k ? . When the voltage on this pin exceeds 2.5 V, the connection is disabled
and the pin is biased with a small current. If the voltage on this pin exceeds 4.5 V, a fault is
assumed, switching is stopped and a latched protection is activated.
If a capacitor and a resistor are connected in series to this pin, a time-out function is
created to protect against an open control loop. See Figure 12 and Figure 13 . The
time-out function is disabled by connecting a resistor (100 k ? ) to ground on the FBCTRL
pin.
If the pin is short-circuited to ground, switching of the flyback controller is prevented.
During normal operating conditions, the converter regulates the output voltage. The
voltage on the FBCTRL pin is then between 1.3 V for the minimum output power and 2 V
for the maximum output power .
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.
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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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