original
TPS54328 TPS54328DDA SOP-8
The main control loop of the TPS54328 is an adaptive on-time pulse width modulation (PWM) controller that
supports a proprietary D-CAP2™ mode control. D-CAP2™ mode control combines constant on-time control with
an internal compensation circuit for pseudo-fixed frequency and low external component count configuration with
both low ESR and ceramic output capacitors. It is stable even with virtually no ripple at the output.
At the beginning of each cycle, the high-side MOSFET is turned on. This MOSFET is turned off after internal one
shot timer expires. This one shot is set by the converter input voltage, VIN, and the output voltage, VO, to
maintain a pseudo-fixed frequency over the input voltage range, hence it is called adaptive on-time control. The
one-shot timer is reset and the high-side MOSFET is turned on again when the feedback voltage falls below the
reference voltage. An internal ramp is added to reference voltage to simulate output ripple, eliminating the need
for ESR induced output ripple from D-CAP2™ mode control
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توضیحات
IC Code: TPS54328 IC
TPS54328DDA – TPS54328DDAR
IC Name : TPS 54328 IC
Input voltage from 4.5 to 18 V, synchronous step-down converter 3 A with Eco-mode™ 8-SO PowerPAD from -40 to 85
The TPS54328 is a 3-A synchronous step-down (buck) converter with two integrated N-channel MOSFETs. It
operates using D-CAP2™ mode control. The fast transient response of D-CAP2™ control reduces the output
capacitance required to meet a specific level of performance. Proprietary internal circuitry allows the use of low
ESR output capacitors including ceramic and special polymer types
توضیحات تکمیلی
| Package |
SOP-8 |
|---|---|
| کیفیت |
original |
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