TEA5170 STMicroelectronics, TEA5170 Datasheet
TEA5170
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TEA5170 Summary of contents
Page 1
... UNDERVOLTAGE LOCKOUT FREQUENCY RANGE WITH SYNCHRONIZA- TION 64kHz DESCRIPTION The TEA5170 is designed to work in the secondary part of an off-line SMPS, sending pulses to the slaved TEA2260/61 which are located on the pri- mary side of the main transformer. An accurate regulated voltage is obtained by duty cycle control. ...
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... TEA5170 BLOCK DIAGRAM Ct 7 OSCILLATOR SOFT START AND Csf 1 DUTY CYCLE LIMITING Error Amplifier Eout ABSOLUTE MAXIMUM RATINGS Symbol V Supply Voltage CC T Operating Junction Temperature j T Storage Temperature Range stg THERMAL DATA Symbol R Junction-ambient Thermal Resistance th (j-a) RECOMMANDED OPERATING CONDITIONS Symbol ...
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... POUT at VRT = 2.7Volt (fig 1.2nF 0% trig 100k 1.2nF 0% O trig RT = 100k csf V > 2.5V 12V 1.2nf 100k 0% TEA5170 Min. Typ. Max. Unit 60.40 65.60 70.80 S 29.18 31.70 34. 0.07 %/ MHz 1.9 2 2.1 V – 3 0.4 3 mV/V 0.2 mV/ 1.77 2.53 3 ...
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... TOTAL DEVICE I Supply Current CC GENERAL DESCRIPTION The TEA5170 takes place in the secondary part of an isolated off-line SMPS. During normal mode operation, it sends pulses to the slave circuit lo- cated in the primary side (TEA2164, TEA2260/61) through a pulse transformer to achieve a very precisely regulated voltage by duty cycle control. ...
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... Figure 3 UNSYNCHRONIZED MODE Vct Vtsy Vrt Wtrig- Remark : In case of an application between TEA5170 and TEA2164, to optimize the synchronization windows of these circuits, the following relations have to T SYNC be used : 1.06 with T : Free period of the TEA2164 e oscillator, and T : Free period of the m TEA5170 oscillator. ...
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... TEA5170 STARTING When V is under 4V, output pulses are not CC allowed and the slave circuit keeps its own mode. When V is going over 4V, output pulses are sent CC via the pulse transformer (or an optical device) to the slave circuit which is synchronizing and enter- ing the slaved mode. Output pulses can be shut down only if V goes below 3 ...
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... Figure 8 TEA5170 BA159 7/9 ...
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... TEA5170 Figure 9 22k 8/9 220nF 220nF 150k 56k 1M ...
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... C system, is granted provided that the system conforms to C Standard Specifications as defined by Philips. TEA5170 b1 Inches Typ. Max. 0.131 0.065 0.022 0.012 0.430 0.384 0.100 0.300 0.300 0260 0.200 0.150 ...