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| 型号： | TEA1612T |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO24 |
| 封装： | 7.50 MM, PLASTIC, MS-013, SOT137-1, SOP-24 |
| 文件页数： | 18/19页 |
| 文件大小： | 108K |
| 代理商： | TEA1612T |
TEA1612T_1
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 01 — 24 September 2009
8 of 19
NXP Semiconductors
TEA1612T
Zero voltage switching resonant converter controller
Bridge frequency accuracy is optimum in the low frequency region. At higher frequencies
both the non-overlap time and the oscillator frequency show a decay.
The frequency of the oscillator depends on the value of capacitor Cf, the peak-to-peak
voltage swing VCF, and the charge and discharge currents. However, at higher
frequencies the accuracy decreases due to delays in the circuit.
7.6 Error amplier
The error amplier is a transconductance amplier. Thus the output current at pin VCO is
determined by the amplier transconductance, the differential voltage on input pin P, and
the internal reference voltage (2.5 V). The output current IVCO is fed to the IRS input of the
current-controlled oscillator.
The source capability of the error amplier increases current in the IRS pin when the
differential input voltage is positive. Therefore the minimum current is determined by
resistor Rf(min) and the minimum frequency setting is independent of the characteristics of
the error amplier.
The error amplier has a maximum output current of 0.5 mA for an output voltage up to
2.5 V. If the source current decreases, the oscillator frequency also decreases resulting in
a higher regulated output voltage.
During start-up, the output voltage of the amplier is connected to the soft start (CSS) pin
via a buffer. This will hold the VCO pin at a constant value of VVCO(start).
7.7 Soft start
The CSS pin voltage is copied to the VCO pin via a buffer. This buffer only has a source
capability i.e. it can only charge the VCO pin. This means that the error amplier output
can increase the VCO pin voltage above the CSS voltage level.
Fig 6.
Frequency range
014aaa038
0
fosc(max)
fosc(start)
fosc
fosc(min)
IIRS
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TEA1612T/N1,518 | 功能描述:交流/直流开关转换器 IC RESONANT CONV CTRLR RoHS:否 制造商:STMicroelectronics 输出电压:800 V 输入/电源电压（最大值）:23.5 V 输入/电源电压（最小值）:11.5 V 开关频率:115 kHz 电源电流:1.6 mA 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:SSO-10 封装:Reel |
| TEA1613T/N1,518 | 功能描述:交流/直流开关转换器 IC CTLR RESONANT CONV RoHS:否 制造商:STMicroelectronics 输出电压:800 V 输入/电源电压（最大值）:23.5 V 输入/电源电压（最小值）:11.5 V 开关频率:115 kHz 电源电流:1.6 mA 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:SSO-10 封装:Reel |
| TEA1620P | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:STARplug |
| TEA1620P/N1,112 | 功能描述:开关变换器、稳压器与控制器 STARPLUG SMPS CNTRLR 48 OHM 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 |
| TEA1622P | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:STARplugTM |
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