Overview
Description
The ISL6228HIEVAL3Z evaluation board demonstrates the performance of the ISL6228 dual-channel PWM controller. The ISL6228 features Renesas' R3™ (robust ripple regulator) technology. Channel-1 output voltage is 1.5V or 1.8V, pending the state of switch S5. Channel-2 output voltage is 1.8V. Each channel has an on-board dynamic-load generator included for evaluating the transient-load response.
The ISL6228HIEVAL3Z applies a 300µs pulse of 20A load across VO1 and GND, and it also applies a 300µs pulse of 20A load across VO2 and GND.
Features
- High-performance R3 technology
- Fast transient response
- ±1% regulation accuracy: -10 °C to +100 °C
- Individual power stage input rail for each channel
- Wide input voltage range: +3.3V to +25V
- Output voltage range: +0.6V to +5V
- Diode emulation mode for increased light load efficiency
- Programmable PWM frequency: 200kHz to 600kHz
- Pre-biased output start-up capability
- Integrated MOSFET drivers and bootstrap diode
- Internal digital soft-start
- Power-good (PGOOD) monitor
- Fault protection
- Undervoltage protection
- Soft crowbar overvoltage protection
- Inductor DCR overcurrent protection
- Over-temperature protection
- Fault identification by PGOOD pull-down resistance
- Pb-free available (RoHS compliant)
Applications
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