TC2001 Tripath Technology Inc., TC2001 Datasheet
TC2001
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TC2001 Summary of contents
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TK2150 STEREO 200W (6Ω) CLASS-T DIGITAL AUDIO AMPLIFIER DRIVER USING DIGITAL POWER PROCESSING ...
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... Absolute Maximum Ratings TC2001 SYMBOL V 5V Power Supply 5 Vlogic Input Logic Level TA Operating Free-air Temperature Range T Storage Temperature Range STORE T Maximum Junction Temperature JMAX ESD ESD Susceptibility – Human Body Model (Note 2) HB All pins Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. ...
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... Thermal Characteristics TC2001 SYMBOL θ Junction-to-ambient Thermal Resistance (still air) JA Thermal Characteristics TP2150 SYMBOL θ Junction-to-case Thermal Resistance JC Electrical Characteristics TC2001 = 25 °C. See Application/Test Circuit on page 7. Unless otherwise noted, the supply voltage VPP=|VNN|=45V. SYMBOL PARAMETER I Quiescent Current q ...
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Note 11: These supply voltages are calculated using the IVPPSENSE and IVNNSENSE values shown in the Electrical Characteristics table. The typical voltage values shown are calculated using a RVPP and RVNN values without any tolerance variation. The minimum and maximum ...
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... TK2150 Block Diagram Input Left TC2001 Audio Signal Processor Input Right Filter TP2150 Output MOSFET MOSFETs Driver LC Filter TK2150 – Rev. 1.0/12.02 ...
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... TC2001 Pinout BIASCAP FBKGND2 DCMP FBKOUT2 VPWR FBKGND1 FBKOUT1 HM UTE TP2150 Pinout OCS1LN 53 54 OCS1LP VBOOT1 -FB 60 SMPSO SLEEP ...
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... TC2001 Audio Signal Processor Pin Descriptions Pin Function 1 BIASCAP Bandgap reference times two (typically 2.5VDC). Used to set the common mode voltage for the input op amps. This pin is not capable of driving external circuitry FBKGND2, Ground Kelvin feedback (Channels 1 & 2) FBKGND1 3 DCMP Internal mode selection ...
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TP2150 Pin Description Pin Function 2,5 AGND OCD1 9 CSS 10 OCD2 13,17 Y2, Y1 14,16 Y2B, Y1B 27,57 VBOOT2, VBOOT1 30,31 OCS2LP, OCS2LN 33,34 OCS2HP, OCS2HN 36,48 HO2, HO1 37,47 HO2COM, HO1COM 39,45 LO2COM, LO1COM 40,44 ...
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Application/Test Circuit ...
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... Resistor that limits the manual DC offset trim range and allows for more precise OFB adjustment. R Bias resistor. Locate close to pin 15 of the TC2001 and ground at pin 20 of the REF TC2001. C BIASCAP decoupling capacitor. Should be located close to pin 1 of the TC2001 and A grounded at pin 20 of the TC2001 ...
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... Over-current filter capacitor, which filters the overcurrent signal at the OCR pins to OCR account for the half-wave rectified current sense circuit internal to the TC2001. A typical value for this component is 220pF. In addition, this component should be located near pin 14 or pin 16 of the TC2001 as possible. ...
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D Drain diode. This diode must be connected from the drain of the high side output D MOSFET to the drain of the low side output MOSFET. This diode absorbs any high frequency overshoots caused by the output inductor L ...
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Typical Performance Characteristics utp ...
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Typical performance Characteristics versus Frequency versus Break Before Make Ω out = 25W / Channel Vs = +40V 22Hz-20kHz (A ES 17) 1 0.5 0.2 0.1 ...
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... Figure 1: Simplified TK2150 Amplifier TK2150 Basic Amplifier Operation The audio input signal is fed to the processor internal to the TC2001, where a switching pattern is generated. The average idle (no input) switching frequency is approximately 700kHz. With an input signal, the pattern is spread spectrum and varies between approximately 200kHz and 1 ...
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... To minimize noise pickup and minimize THD+ TC2001 as possible. Make sure that the routing of the high voltage feedback lines is kept far away from the input op amps or significant noise coupling may occur best to shield the high voltage feedback lines by using a ground plane around these traces as well as the input section ...
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... Depending on the system design, the single point connection may be in the form of a ferrite bead or a PCB trace. The analog ground, must be connected to pin 20 on the TC2001 and pins 2 and 5 on the TP2150. The ground for the V5 power supply should connect directly to pin 20 of the TC2001. Additionally, any external input circuitry such as preamps, or active filters, should be referenced to pin 20 on the TC2001 ...
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... TK2150 Amplifier Gain The gain of the TK2150 is the product of the input stage gain and the modulator gain for the TC2001. Please refer to the sections, Input Stage Design, and Modulator Feedback Design, for a complete explanation of how to determine the external component values. = ...
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... Increasing the value of R Sometimes increasing the value of R since the input stage for the TC2001 will clip at approximately 4Vpp. This will ensure that the input stage doesn’t clip before the output stage. Figure 3 shows how the feedback from the output of the amplifier is returned to the input of the modulator ...
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... TC2001 Processing & Modulation Figure 3: Modulator Feedback The modulator feedback resistors are User specified, FBA R * VPP FBA = R FBB (VPP - VPP FBA = R FBC FBC ≈ MODULATOR R FBA The above equations assume that VPP=|VNN|. For example system with VPP R = 1kΩ ...
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... This means that the DC voltage drops to essentially zero when a typical load is connected. HMUTE The HMUTE pin on the TC2001 logic output that indicates various fault conditions within the device. These conditions include: over-current, overvoltage and undervoltage. The HMUTE output is capable of directly driving an LED through a series 2kΩ resistor. ...
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... MOSFETs in case of a short circuit condition. Auto Recovery Circuit for Overcurrent Fault Condition If an overcurrent fault condition occurs the HMUTE pin (pin 8 of the TC2001) will be latched high and the amplifier will be muted. The amplifier will remain muted until the MUTE pin (pin 24 of the TC2001) is toggled high and then low or the power supplies are turned off and then on again ...
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... VPP and VNN trip voltages without VNN1 considering the effect of R and R VPP2 VNN TC2001 R VNN1 17 VNNSENSE VPP R VPP1 ...
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Using the resistor values from above, the actual minimum over voltage turn off points will be: = VPP R MIN_OV_TUR N_OFF = − VNN MIN_OV_TUR N_OFF The other three trip points can be calculated using the same formula but inserting ...
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VN10. Furthermore, problems can arise since VN10 will not track movements in VNN. The external VN10 supply must be able to source ...
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... The half-bridge power MOSFETs require a deadtime between when one transistor is turned off and the other is turned on (break-before-make) in order to minimize shoot through currents. The TC2001 has BBM0 and BBM1 that are logic inputs (connected to logic high or pulled down to logic low) that control the break-before-make timing of the output transistors according to the following table ...
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THD+N versus Frequency versus G ate Resistance Ω out = 25W /Channel FE T's = FQP13N10 40nS V = +40V 0 ...
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... INPUT1 Figure 8: Input Stage Setup for Bridging 0.15uF. F TC2001 UT1 INV1 - + AGND BIASCAP ...
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The switching outputs, OUT1 and OUT2, are not synchronized common inductor may not be used with a bridged TK2150. For this same reason, individual zobel networks must be applied to each output to load each output and lower ...
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The pattern itself does not alter or distort the audio input signal but it does introduce some inaudible noise components. The measurements ...
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... TC2001 Package Information 28-pin SOIC TK2150 – Rev. 1.0/12.02 ...
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TP2150 Package Information 64-pin LQFP ...
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TP2150 Package Information 64-pin LQFP ...
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... PRELIMINARY – This product is still in development. Tripath Technology Inc. reserves the right to make any changes without further notice to improve reliability, function or design. This data sheet contains the design specifications for a product in development. Specifications may change in any manner without notice. Tripath and Digital Power Processing are trademarks of Tripath Technology Inc ...