TEA5170 SGS-Thomson-Microelectronics, TEA5170 Datasheet
TEA5170
Available stocks
Related parts for TEA5170
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. ...
Page 2
... 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 ...
Page 3
... Vcc = 12V 0% 0.01 0%, Vcc = 12V 1.9 2 – 3 0.4 0.2 0% 1.77 2. 1.04 1.49 0% 6.3 6.9 0.5 0 110 64 2.7 800 2.5 3.7 = 12V TEA5170 Max. Unit %/ MHz mV/V mV/ 3.29 s 1.94 s 7.5 V 1.1 V 190 mA 190 mA kHz 3/9 ...
Page 4
... 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. ...
Page 5
... Figure 3 UNSYNCHRONIZED MODE Vct Vtsy Vrt 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 : T m 1.06 with T : Free period of the TEA2164 e oscillator, and T : Free period of the m TEA5170 oscillator. BLOCK DESCRIPTION ...
Page 6
... 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 ...
Page 7
... Figure 8 BA159 TEA5170 7/9 ...
Page 8
... TEA5170 Figure 9 8/9 220nF 220nF 22k 150k 56k 1M ...
Page 9
... Millimeters Typ. Max. 3.32 1.65 0.55 0.304 10.92 9.75 2.54 7.62 7.62 6.6 5.08 3.81 1. system, is granted provided that the system conforms to 2 the I C Standard Specifications as defined by Philips. TEA5170 e4 E Inches Min. Typ. 0.131 0.020 0.045 0.065 0.014 0.022 0.008 0.012 0.430 0.313 0.384 0.100 0.300 0.300 0.200 0.125 0.150 ...