The ADP1883-0.3-EVALZ is an evaluation board to test the ADP1883 switching controller at 300KHz switching frequency. ADP1883 are versatile current mode, synchronous step-down controllers that provide superior transient response, optimal stability, and current-limit protection by using a constant on-time, pseudo-fixed frequency with a programmable current-limit, current-control scheme. In addition, these devices offer optimum performance at low duty cycles by using valley current mode control architecture. This allows the ADP1883 to drive all N-channel power stages to regulate output voltages as low as 0.8V. The ADP1883 is the power saving mode (PSM) version of the device and is capable of pulse skipping to maintain output regulation while achieving improved system efficiency at light loads.
- Synchronous current-mode with constant on-time PWM buck controller
- Supports all N-channel Mosfet power stages
- No current-sense resistor required
- Resistor-programmable current-sense gain
- Thermal overload protection
- Short circuit protection
- Precision enable input
- Integrated bootstrap diode for high-side drive
- 140μA shutdown supply current
- Power saving mode (PSM) for light loads
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