Maker : TEMIC Semiconductors
Part No. : U209B3-FP

  Datasheet PDF : U209B3-FP.pdf
  Cross Reference : U209B3-FP Cross Reference
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Product Information

TELEFUNKEN Semiconductors U209B3/ U209B3–FP Phase Control Circuit – Tacho Applications Description: The integrated circuit U209B3, is designed as a phase control circuit in bipolar technology. It has also protection circuit for the supply. Due to integration of many functions, it leads to significant cost and space saving as well as increased reliability. At the same time, it gives the designer free hand to select varieties of regulators to choose from and switching characteristics according to its choice. Features D Internal frequency to voltage converter D Externally controlled integrated amplifier D Automatic soft start with minimised ”dead time” D Voltage and current synchronisation D Retriggering D Triggering pulse typ. 155 mA D Internal supply voltage monitoring D Temperature compensated reference source D Current requirement ≤ 3 mA Package: DIP14, SO16 14(16) Voltage / Current detector 1(1) Automatic retriggering Output pulse 4(4) 5(5) Control amplifier 6(6) 10(10) + 9(9) – Phase control unit ö = f (V12) 3(3) Supply voltage limitation Reference voltage Voltage monitoring 2(2) –VS GND 13(15) Soft start s 11(11) 12(12) Frequency to voltage converter 8(8) 7(7) 95 10691 Figure 1. Block diagram – SO 16 in bracket Rev. A1: 01.09.1995 Preliminary Information 1 (15) BYT51J D1 R1 M 18 kW 2W R3 220 k W 95 10692 Rev. A1: 01.09.1995 L R4 470 kW 1 Automatic retriggering Output pulse 220 W 5 6 + 9 – Supply voltage limitation Reference voltage Voltage monitoring Control amplifier 3 3.3 nF C2 2 –VS C1 GND C 10 13 22 mF 25 V 2.2 mF 16 V N R 2 680 kW 4 R10 AEG TW11 N600 14 Voltage / Current detector VM = 230 V ~ 10 R9 47 k W TELEFUNKEN Semiconductors R31 100 kW Set speed voltage R 10 56 k W R 11 100 k W C9 Figure 2. Block diagram with typical circuitry for speed regulation Preliminary Information Phase control unit ö = f (V12) Soft start s 11 R8 2 MW R6 68 k W C8 220 nF R7 22 kW C5 1 nF C3 2.2 mF 16 V 1kW R5 12 8 7 220 nF C4 Speed sensor Frequency to voltage converter C7 2.2 mF 16 V 2.2 mF /16 V Actual speed voltage C6 U209B3/ U209B3–FP 3 (15) 100 nF U209B3/U209B3–FP Description Mains Supply The U209B is designed with voltage limiting and can therefore be supplied directly from the mains. The supply voltage between Pin 2 (+ pol/ ) and Pin 3 builds up across D1 and R1 and is smoothed by C1. The value of the series resistance can be approximated using (Figure 2): R1 = VM – Vs 2 IS TELEFUNKEN Semiconductors When the potential on Pin 6 reaches the nominal value predetermined at Pin 11, then a trigger pulse is generated whose width tp is determined by the value of C2 (the value of C2 and hence the pulse width can be evaluated by assuming 8 ms/nF. The current sensor on Pin 1 ensures that, for operation with inductive loads, no pulse will be generated in a new half cycle as long as current from the previous half cycle is still flowing in the opposite direction to the supply voltage at that instant. This makes sure that ”Gaps” in the load current are prevented. The control signal on Pin 11 can be in the range 0 V to –7 V (reference point Pin 2). If V11 = –7 V then the phase angle is at maximum = amax i. e. the current flow angle is a minimum. The minimum phase angle amin is when V11 = Vpin2. Further information regarding the design of the mains supply can be found in the data sheets in the appendix. The reference voltage source on Pin 13 of typ. –8.9 V is derived from the supply voltage and represents the reference level of the control unit. Operation using an externally stabilised DC voltage is not recommended. If the supply cannot be taken directly from the mains because the power dissipation in R1 would be too large, then the circuit shown in the following Figure 3 should be employed. Voltage Monitoring As the voltage is built up, uncontrolled output pulses are avoided by internal voltage surveillance. At the same time, all of the latches in the circuit (phase cont...

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