GreenChip Integrated Circuit Chip TMII SMPS control IC TEA1533AT/N1,118
integrated circuit ic
,integrated circuit components
GreenChipTMII SMPS control IC TEA1533T; TEA1533AT
FEATURES
Distinctive features
• Universal mains supply operation (70 to 276 V AC)
• High level of integration, giving a very low external component count.
Green features
• Valley or zero voltage switching for minimum switching losses
• Efficient quasi-resonant operation at high power levels
• Frequency reduction at low power standby for improved system efficiency (<3 W)
• Cycle skipping mode at very low loads; Pi <300 mW at no-load operation for a typical adapter application
• On-chip start-up current source.
Protection features
• Safe restart mode for system fault conditions
• Continuous mode protection by means of demagnetization detection (zero switch-on current)
• Accurate and adjustable overvoltage protection (latched in TEA1533T, safe restart in TEA1533AT)
• Short winding protection
• Undervoltage protection (foldback during overload)
• Overtemperature protection (latched in TEA1533T, safe restart in TEA1533AT)
• Low and adjustable overcurrent protection trip level
• Soft (re)start
• Mains voltage-dependent operation enabling level.
APPLICATIONS
Besides typical application areas, i.e. adapters and chargers, the device can be used in TV and monitor supplies and all applications that demand an efficient and cost-effective solution up to 250 W.
GENERAL DESCRIPTION
The GreenChipTM(1)II is the second generation of green Switched Mode Power Supply (SMPS) control ICs operating directly from the rectified universal mains. A high level of integration leads to a cost effective power supply with a very low number of external components.
The special built-in green functions allow the efficiency to be optimum at all power levels. This holds for quasi-resonant operation at high power levels, as well as fixed frequency operation with valley switching at medium power levels. At low power (standby) levels, the system operates at a reduced frequency and with valley detection.
The proprietary high voltage BCD800 process makes direct start-up possible from the rectified mains voltage in an effective and green way. A second low voltage BICMOS IC is used for accurate, high-speed protection functions and control.
Highly efficient and reliable supplies can easily be designed using the GreenChipII control IC.
(1) GreenChip is a trademark of Koninklijke Philips Electronics N.V.
BLOCK DIAGRAM
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134); note 1.
| SYMBOL | PARAMETER | CONDITIONS | MIN. | MAX. | UNIT |
| Voltages | |||||
| VCC | supply voltage | continuous | −0.4 | +20 | V |
| VCTRL | voltage on pin CTRL | −0.4 | +5 | V | |
| VDEM | voltage on pin DEM | current limited | −0.4 | -- | V |
| Vsense | voltage on pin Isense | current limited | −0.4 | -- | V |
| VDRAIN | voltage on pin DRAIN | −0.4 | +650 | V | |
| Currents | |||||
| ICTRL | current on pin CTRL | d < 10% | -- | 50 | mA |
| IDEM | current on pin DEM | −250 | +250 | µA | |
| Isense | current on pin Isense | -1 | +10 | mA | |
| IDRIVER | current on pin DRIVER | d < 10% | -0.8 | +2 | A |
| IDRAIN | current on pin DRAIN | -- | 5 | mA | |
| General | |||||
| Ptot | total power dissipation | Tamb < 70 °C | -- | 0.75 | W |
| Tstg | storage temperature | -55 | +150 | °C | |
| Tj | operating junction temperature | −20 | +145 | °C | |
| Vesd |
electrostatic discharge voltage |
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Notes
1. All voltages are measured with respect to ground; positive currents flow into the IC; pin VCC may not
be current driven. The voltage ratings are valid provided other ratings are not violated; current ratings are valid provided the maximum power rating is not violated.
2. Human Body Model (HBM): equivalent to discharging a 100 pF capacitor through a 1.5 kΩ resistor.
3. Machine Model (MM): equivalent to discharging a 200 pF capacitor through a 0.75 µH coil and a 10 Ω resistor.
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