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INTEGRATED CIRCUITS
DATA SHEET
TEA1533P; TEA1533AP GreenChipTMII SMPS control IC
Product specification Supersedes data of 2002 May 31 2002 Aug 23
Philips Semiconductors
Product specification
GreenChipTMII SMPS control IC
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 TEA1533P, safe restart in TEA1533AP) • Short winding protection • Undervoltage protection (foldback during overload) • Overtemperature protection (latched in TEA1533P, safe restart in TEA1533AP) • Low and adjustable overcurrent protection trip level • Soft (re)start • Mains voltage-dependent operation enabling level. APPLICATIONS
TEA1533P; TEA1533AP
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.
1 2 3 4
8 7 6 5
TEA1533P TEA1533AP
MGU505
Fig.1 Basic application diagram.
2002 Aug 23
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Philips Semiconductors
Product specification
GreenChipTMII SMPS control IC
GENERAL DESCRIPTION is the second generation of green The 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.
(1) GreenChip is a trademark of Koninklijke Philips Electronics N.V.
TEA1533P; TEA1533AP
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.
GreenChip™(1)II
ORDERING INFORMATION PACKAGE TYPE NUMBER NAME TEA1533P TEA1533AP DIP8 DESCRIPTION plastic dual in-line package; 8 leads (300 mil) VERSION SOT97-1
2002 Aug 23
3
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book, full pagewidth
2002 Aug 23 4
BLOCK DIAGRAM
Philips Semiconductors
GreenChipTMII SMPS control IC
VCC
1
SUPPLY MANAGEMENT
START-UP CURRENT SOURCE OCP Iprot(DEM) VALLEY clamp
8
DRAIN
internal supply 2 S1 M-level
UVLO start
DEMAG SHORT PROTECTION
7 4
HVS n.c. DEM
GND
VOLTAGE CONTROLLED OSCILLATOR
LOGIC 100 mV
50 mV
FREQUENCY CONTROL
UP/DOWN COUNTER
OVERVOLTAGE PROTECTION
Iprot(CTRL) CTRL 3 −1 POWER-ON RESET
LOGIC
DRIVER Iss LEB
6
DRIVER
S
Q blank
soft start S2
0.5 V
2.5 V burst detect OVERTEMPERATURE PROTECTION
UVLO
R
Q 5 OCP Isense
S VCC < 4.5 V or UVLO (TEA1533AP)
Q
TEA1533P; TEA1533AP
R
Q
TEA1533P TEA1533AP
MAXIMUM ON-TIME PROTECTION
short winding
0.88 V OVERPOWER PROTECTION
MGU506
Product specification
Fig.2 Block diagram.
Philips Semiconductors
Product specification
GreenChipTMII SMPS control IC
PINNING SYMBOL PIN VCC GND CTRL DEM 1 2 3 4 ground control input input from auxiliary winding for demagnetization timing, overvoltage and overpower protection programmable current sense input gate driver output high voltage safety spacer, not connected drain of external MOS switch, input for start-up current and valley sensing
25 f
handbook, halfpage (kHz)
TEA1533P; TEA1533AP
FUNCTIONAL DESCRIPTION
DESCRIPTION supply voltage
The TEA1533 is the controller of a compact flyback 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 TEA1533 can operate in multi modes (see Fig.4).
Isense DRIVER HVS DRAIN
5 6 7 8
MGU508
VCO 175
fixed
quasi resonant
P (W)
Fig.4 Multi mod.