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TPS53128,pdf(Dual Synchronous
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2010-10-05
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The TPS53128 is a dual, adaptive on-time D-CAP2™ mode synchronous buck controller. The part enables
system designers to cost effectively complete the suite of various end equipment's power bus regulators with a
low external component count and low standby consumption. The main control loop for the TPS53128 uses the
D-CAP2™ Mode topology which provides a very fast transient response with no external component.
The TPS53128 also has a proprietary circuit that enables the device to adapt not only low equivalent series
resistance (ESR) output capacitors such as POSCAP/SP-CAP, but also ceramic capacitor. The fixed frequency
emulated adaptive on-time control supports seamless operation between PWM mode at heavy load condition
and reduced frequency operation at light load for high efficiency down to milliampere range. The part provides a
convenient and efficient operation with conversion voltages from 4.5 V to 24 V and output voltage from 0.76 V to
5.5 V.
The TPS53128 is available in 4-mm x 4-mm 24 pin QFN (RGE) or 24 pin TSSOP (PW) packages, and is
specified from -40°C to 85°C ambient temperature range.
system designers to cost effectively complete the suite of various end equipment's power bus regulators with a
low external component count and low standby consumption. The main control loop for the TPS53128 uses the
D-CAP2™ Mode topology which provides a very fast transient response with no external component.
The TPS53128 also has a proprietary circuit that enables the device to adapt not only low equivalent series
resistance (ESR) output capacitors such as POSCAP/SP-CAP, but also ceramic capacitor. The fixed frequency
emulated adaptive on-time control supports seamless operation between PWM mode at heavy load condition
and reduced frequency operation at light load for high efficiency down to milliampere range. The part provides a
convenient and efficient operation with conversion voltages from 4.5 V to 24 V and output voltage from 0.76 V to
5.5 V.
The TPS53128 is available in 4-mm x 4-mm 24 pin QFN (RGE) or 24 pin TSSOP (PW) packages, and is
specified from -40°C to 85°C ambient temperature range.
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