tda21201 Infineon Technologies Corporation, tda21201 Datasheet
tda21201
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tda21201 Summary of contents
Page 1
... MOSFET. The Power MOSFETs are optimized for lowest static and dynamic losses for sub-3.5 V conversion and can handle output current. The TDA21201 is manufactured in Infineon´s state-of-the-art multi-chip assembly using a low-Rth 7-Pin Preliminary Data Sheet ...
Page 2
... Preliminary Data Sheet = 12 V (Pin 6- High side FET Low side FET GND (Pin 1-3) Symbol V CC_PEAK < IN_Peak 3.3 V OUT_MAX CC OUT Symbol Page 2 TDA21201 V OUT to output inductor (Pin 4/tab) Value Unit Min. Max. 20 20* OUT_PK - 150 ...
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... OUT ° OUT Tj = 125 ° OUT (s. Timing Diagram) Page 3 TDA21201 62 40 Values Unit Min. Typ. Max. 1.2 1.6 V 0.8 1.5 2.5 µ -10 10 µA -2 -10 - 0.1 1 µA 13.3 4 ...
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... V input where efficiency and board space is an issue, e.g. in multi-phase microprocessor supplies on motherboards, in VRMs and servers. The TDA21201 can also be used to power Logic circuits, Memory banks etc. that require higher voltages, e.g. 2.5 or 3.3 V. The efficiency of the Integrated Switch and the overall efficiency of the converter will even these elevated output voltages compared to the 1 ...
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... V TTL) and in terms of the ‘Low’/’High’ relationship (’Low’ turns the low side MOSFET on, ‘High` turns the High side MOSFET on). The TDA21201 can be shut down (the high side MOSFET and the low side MOSFET is turned off) by applying an input signal V than 1.5 µ ...
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... Vcc increases from 0 to its nominal value +12 V, e.g. during turn-on. The same happens vice versa when the supply voltage decreases from its nominal value + e.g. during turn-off. The TDA21201 is very insensitive to Vcc tolerances. It behaves properly in a wide Vcc range from ...
Page 7
... Controller to it and the Integrated Switch will operate. Input filter / Output filter / Converter Stability The Integrated Switch TDA21201 is a new solution to implement the power semiconductor components in a DC/DC converter. It offers many advantages to the user. However, the basic behavior with respect to the voltages, the currents and the timing remains unchanged ...
Page 8
... Another important aspect is a very low impedance path in the Vcc = 12 V à TDA21201 à GND loop recommended to place the capacitors of the input filter as close to the GND and Vcc pins of the TDA21201 as possible. Additional ceramic capacitors in parallel to the input capacitors help to reduce the effect of stray inductance of the input capacitors and the PCB traces ...
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... Over voltage protection of Vcc / Avalanche avoidance The voltage at the Vcc pins of the TDA21201 rises above the nominal DC value of the Vcc supply (= + 12 V) during the turn-off of the High Side MOSFET. The voltage overshoots at the Vcc pins according to: vcc (t) = instantaneous value of vcc; Vcc = +12 V DC; Lstray = stray inductance of the PCB traces + the input capacitor’ ...
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... High Side MOSFET´s current (= di/dt result the over voltage will be limited. Power loss in the Integrated Switch TDA21201 / Heat sink estimation The power loss in the Integrated Switch depends mainly on the current and the switching frequency. Other conditions that impact the power loss are increased junction temperature and the layout (e ...
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... MOSFETs, not in the driver) Efficiency of a DC/DC converter using the Integrated Switch TDA21201 The following measurements were performed on a 4-phase Evaluation Board. Phase 4 can be disabled so that the converter operates in a 3-phase mode. Boundary Conditions: Vcc = 1.6 V, TDA21201 as SMD I 4-Phase Converter: Efficiency vs. Load current 95 90 ...
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... It should be noted that the overall converter efficiency and the maximum converter output power will increase as the output voltage increases, e.g. V Preliminary Data Sheet Io_1 = 25 A Io_2 = 40 A Io_3 = 55 A Io_4 = 70 A 300 350 4 Phase @ 185 kHz 4 Phase @ 305 kHz 3 Phase @ 185 kHz 3 Phase @ 305 kHz 50 60 Page 12 TDA21201 = 2 Apr-29, 2002 ...
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... Package Drawing TO-220-7-3 (straight leads) Package Drawing TO-220-7-230 (staggered leads) Preliminary Data Sheet Page 13 TDA21201 Apr-29, 2002 ...
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... Package Drawing TO-263-7-2 (SMD) Preliminary Data Sheet Page 14 TDA21201 Apr-29, 2002 ...
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... Life support devices or systems are intended to be implanted in the human body support and/or maintain and sustain and/or protect human life. If they fail reasonable to assume that the health of the user or other persons may be endangered. Preliminary Data Sheet Page 15 TDA21201 Apr-29, 2002 ...