Datenblatt-Suchmaschine für elektronische Bauteile |
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TA2022 Datenblatt(PDF) 9 Page - Tripath Technology Inc. |
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TA2022 Datenblatt(HTML) 9 Page - Tripath Technology Inc. |
9 / 31 page Tr i p ath Technol ogy, I n c. - Techni cal I n for m ati on 9 TA2022 – KLI/1.2/07-04 saturate. If the recommended inductor value of 100H is not used, the VN10 may overshoot with respect to VNN during TA2022 turn on. DSW Flywheel diode for the internal VN10 buck converter. This diode also prevents VN10SW from going more than one diode drop negative with respect to VNN. This Diode can be a Fast Recovery, Switching or Shottky, but must be rated at least 200mA, 30V, 50nS. CSWFB VN10 generator feedback capacitor. This capacitor, in conjunction with RSWFB, filters the VN10 feedback signal such that the loop is unconditionally stable. RSWFB VN10 generator feedback resistor. This resistor sets the nominal VN10 voltage. With RSWFB equal to 1kΩ, the internally VN10 voltage will typically be 11V above VNN. CS Supply decoupling for the power supply pins. For optimum performance, these components should be located close to the TA2022 and returned to their respective ground as shown in the Application/Test Circuit. RVNNSNESE Overvoltage and undervoltage sense resistor for the negative supply (VNN). Please refer to the Electrical Characteristics Section for the trip points as well as the hysteresis band. Also, please refer to the Over / Under-voltage Protection section in the Application Information for a detailed discussion of the internal circuit operation and external component selection. RVPPSENSE Overvoltage and undervoltage sense resistor for the positive supply (VPP). Please refer to the Electrical Characteristics Section for the trip points as well as the hysteresis band. Also, please refer to the Over / Under-voltage Protection section in the Application Information for a detailed discussion of the internal circuit operation and external component selection. CHBR Supply decoupling for the high current Half-bridge supply pins. These components must be located as close to the device as possible to minimize supply overshoot and maximize device reliability. These capacitors should have good high frequency performance including low ESR and low ESL. In addition, the capacitor voltage rating must be twice the maximum VPP voltage. CZ Zobel capacitor, which in conjunction with RZ, terminates the output filter at high frequencies. Use a high quality film capacitor capable of sustaining the ripple current caused by the switching outputs. RZ Zobel resistor, which in conjunction with CZ, terminates the output filter at high frequencies. The combination of RZ and CZ minimizes peaking of the output filter under both no load conditions or with real world loads, including loudspeakers which usually exhibit a rising impedance with increasing frequency. The recommended power rating is 2 watts. DO Fast Recovery diodes that minimize overshoots and undershoots of the outputs with respect to power ground during switching transitions as well as output shorts to ground. For maximum effectiveness, these diodes must be located close to the output pins and returned to their respective VPP and VNN. Also, they should be rated with a maximum Forward Voltage of 1V at 10A. Please see Application/Test Circuit for VPP and VNN return pins. LO Output inductor, which in conjunction with CO, demodulates (filters) the switching waveform into an audio signal. Forms a second order filter with a cutoff frequency of ) C L 2 ( 1 f O O C π = and a quality factor of O O O L C L C R Q = . These inductors must be rated at least 10A with high linearity. Please see Output Filter Design section for details. CO Output capacitor, which, in conjunction with LO, demodulates (filters) the switching waveform into an audio signal. Forms a second order low-pass filter with a cutoff frequency of ) C L 2 ( 1 f O O C π = and a quality factor of O O O L C L C R Q = . Use a high quality film capacitor capable of sustaining the ripple current caused by the switching outputs. Electrolytic capacitors should not be used. |
Ähnliche Teilenummer - TA2022 |
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Ähnliche Beschreibung - TA2022 |
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