The SC1146 is the latest, high performance, multi-phase (PWM) controller designed for high power mi- croprocessors requiring ultra fast transient response.
The SC1146 is a high-performance, multi-phase PWM controller designed for high-power microprocessors requiring ultra-fast transient response. It features a novel design that distributes output load across up to four converter channels by digitally phase-shifting PWM outputs, reducing stress on components and input ripple current by up to 80%.
| Operating Temperature Range | 0 to +70 °C |
|---|---|
| Junction Temperature Range | 0 to +125 °C |
| Maximum Duty Cycle | 75 % |
| External Clock Frequency Range | 0.80 to 8.0 MHz |
| Internal Clock Frequency Range | 8.0 to 8.5 MHz |
| Load Regulation | -0.25% to +0.5% |
The controller supports selectable 2, 3, or 4 phase operation.
The device operates with +5 Volt only, eliminating the need for a +12V supply.
The output voltage is digitally programmable by means of a 5 bit DAC.
The parts include under-voltage lock-out with hysteresis and over-current protection.