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参数资料
| 型号： | TEA1506T/N1,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 6/22页 |
| 文件大小： | 0K |
| 描述： | IC CTLR SMPS PS SW MODE 14SOIC |
| 标准包装： | 2,500 |
| 系列： | GreenChip™ II |
| 输出隔离： | 隔离 |
| 频率范围： | 25kHz ~ 175kHz |
| 输入电压： | 8.7 V ~ 20 V |
| 输出电压： | 650V |
| 功率（瓦特）： | 750mW |
| 工作温度： | -20°C ~ 145°C |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 14-SO |
| 包装： | 带卷 (TR) |
Philips Semiconductors
GreenChip ? II SMPS control IC
FUNCTIONAL DESCRIPTION
The TEA1506 is the controller of a compact flyback
Product speci?cation
TEA1506P; TEA1506AP;
TEA1506T; TEA1506AT
sense(max)
converter, and is situated at the primary side. An auxiliary
winding of the transformer provides demagnetization
detection and powers the IC after start-up.
The TEA1506 can operate in multi modes (see Fig.5).
V
handbook, halfpage
0.52 V
MGU233
f
(kHz)
handbook, halfpage
175
VCO
fixed
MGU508
quasi resonant
1V
(typ)
1.5 V
(typ)
VCTRL
Fig.6 V sense(max) voltage as function of V CTRL .
25
P (W)
The moment the voltage on pin V CC drops below the
undervoltage lock-out level, the IC stops switching and
re-enters the safe restart mode.
Fig.5 Multi modes operation.
Supply management
The next converter stroke is started only after
demagnetization of the transformer current (zero current
switching), while the drain voltage has reached the lowest
voltage to prevent switching losses (green function). The
primary resonant circuit of the primary inductance and
drain capacitor ensures this quasi-resonant operation. The
design can be optimized in such a way that zero voltage
switching can be reached over almost the universal mains
range.
To prevent very high frequency operation at lower loads,
the quasi-resonant operation changes smoothly in fixed
frequency PWM control.
At very low power (standby) levels, the frequency is
controlled down, via the VCO, to a minimum frequency of
approximately 25 kHz.
Start-up and undervoltage lock-out
Initially the IC is in the save restart mode. As long as V CC
is below the V CC(start) level, the supply current is nearly
zero.
The IC will activate the converter as soon as the voltage on
pin V CC passes the V CC(start) level.
The IC supply is taken over by the auxiliary winding as
soon as the output voltage reaches its intended level.
2003 Sep 09
6
All (internal) reference voltages are derived from a
temperature compensated, on-chip band gap circuit.
Current mode control
Current mode control is used for its good line regulation
behaviour.
The ‘on-time’ is controlled by the internally inverted control
voltage, which is compared with the primary current
information. The primary current is sensed across an
external resistor. The driver output is latched in the logic,
preventing multiple switch-on.
The internal control voltage is inversely proportional to the
external control pin voltage, with an offset of 1.5 V. This
means that a voltage range from 1 to 1.5 V on pin CTRL
will result in an internal control voltage range from
0.5 to 0 V (a high external control voltage results in a low
duty cycle).
Oscillator
The maximum fixed frequency of the oscillator is set by an
internal current source and capacitor. The maximum
frequency is reduced once the control voltage enters the
VCO control window. Then, the maximum frequency
changes linearly with the control voltage until the minimum
frequency is reached (see Figs 6 and 7).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TEA1507 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:GreenChipII SMPS control IC |
| TEA1507P | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:GreenChipII SMPS control IC |
| TEA1507P/N1,112 | 功能描述:转换 - 电压电平 SMPS GREENCHIP II RoHS:否 制造商:Micrel 类型:CML/LVDS/LVPECL to LVCMOS/LVTTL 传播延迟时间:1.9 ns 电源电流:14 mA 电源电压-最大:3.6 V 电源电压-最小:3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MLF-8 |
| TEA1520 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:STARplug |
| TEA1520P | 制造商:STMicroelectronics 功能描述:NXP IC 8-PIN DIP |
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