Information as of 2000-01-10
 Latest information online
TEA1504; GreenChip^TM; SMPS control IC
| Description |  |
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The GreenChipÔ TEA1504 is intended for off-line 90 to 276 V (AC) power supply applications. It is one of a family of high voltage ICs integrating both analog and digital circuit functions for controlling a switched mode power supply (SMPS). Its functions include integrated high voltage start-up current source, voltage Pulse Width Mode (PWM) control, 5% accurate oscillator, band-gap derived reference voltages, comprehensive fault protection and leading edge blanking. Its high level of integration allows power supplies to be cost effective, compact, lightweight, highly efficient, more reliable, and simple to design. Efficient green features permit very low power operation modes, and an innovative on/off function allows an expensive mains switch to be replaced with a low-cost functional switch. THE GREENCHIPÔ FAMILY The GreenChipÔ family of ICs are fully integrated with most common PWM functions such as error amplifier, oscillator, bias current generator and band-gap based reference voltage circuits. The high level of integration allows easy and cost effective power supply design. The ICs are made by a Philips proprietary high voltage BCDMOS process which produces low voltage circuit devices with inputs that are able to withstand up to 720 V.
| Features | |
Distinctive features
- High level of integration reduces the number of components by up to 50 compared to power supply using discrete components
- On/off functional switch replaces expensive mains switch
- Direct off-line operation (90 to 276 V AC)
- 5% accurate on-chip oscillator.
Green features
- Low power consumption in off-mode (<100 mW)
- Fast and efficient on-chip start-up current source
- Burst mode standby (<2 W) for overall improved system efficiency
- Low power operation mode with lower frequency reduces switching losses
- Low Overcurrent Protection (OCP) level.
Protection features
- Demagnetization protection
- Cycle-by-cycle current limitation with programmable current trip level
- Overvoltage protection
- Overtemperature protection
- Safe-restart mode with reduced power for system fault conditions.
Highly versatile
- Usable in buck and flyback topology
- Interfaces both primary and secondary side feedback.
| Datasheet | |
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