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INTEGRATED CIRCUITS
DATA SHEET
TEA1533T; TEA1533AT 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 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
TEA1533T; TEA1533AT
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
14 13 12
4 TEA1533T 11
TEA1533AT
5 6 7 10 9 8
MGU499
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.
TEA1533T; TEA1533AT
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 TYPE NUMBER TEA1533T TEA1533AT PACKAGE NAME SO14 DESCRIPTION plastic small outline package; 14 leads; body width 3.9 mm VERSION SOT108-1
2002 Aug 23
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book, full pagewidth
2002 Aug 23 4
BLOCK DIAGRAM
Philips Semiconductors
GreenChipTMII SMPS control IC
VCC
2
SUPPLY MANAGEMENT
START-UP CURRENT SOURCE OCP Iprot(DEM) clamp
14
DRAIN
internal supply 3 S1 M-level
UVLO start
DEMAG SHORT PROTECTION
VALLEY
12, 13 7
HVS n.c. DEM
GND
VOLTAGE CONTROLLED OSCILLATOR
LOGIC 100 mV
50 mV
FREQUENCY CONTROL
UP/DOWN COUNTER
OVERVOLTAGE PROTECTION
Iprot(CTRL) CTRL 6 −1 POWER-ON RESET
LOGIC
DRIVER Iss LEB
11
DRIVER
S
Q blank
soft start S2
0.5 V
2.5 V burst detect OVERTEMPERATURE PROTECTION
UVLO
R
Q 9 OCP Isense
S VCC < 4.5 V or UVLO (TEA1533AT)
Q
TEA1533T; TEA1533AT
R
Q
TEA1533T TEA1533AT
MAXIMUM ON-TIME PROTECTION
short winding
0.88 V OVERPOWER PROTECTION
MGU500
Product specification
Fig.2 Block diagram.
Philips Semiconductors
Product specification
GreenChipTMII SMPS control IC
PINNING SYMBOL PIN n.c. VCC GND n.c. n.c. CTRL DEM 1 2 3 4 5 6 7 DESCRIPTION not connected supply voltage ground not connected not connected control input input from auxiliary winding for demagnetization timing, overvoltage and overpower protection not connected programmable current sense input not connected gate driver output high voltage safety spacer, not connected high voltage safety spacer, not connected drain of external MOS switch, input for start-up current and valley sensing
25 f
handbook, halfpage (kHz)
TEA1533T; TEA1533AT
FUNCTIONAL DESCRIPTION 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.