Renesas Electronics Corporation introduces three programmable power management integrated circuits (PMICs) that offer the highest energy efficiency and smallest footprint for application processors in smartphones and tablets: the ISL91302B, ISL91301A, and ISL91301B PMICs.PMICs also supply power to artificial intelligence (AI) processors, FPGAs, and industrial microprocessors (MPUs), and are ideal for powering solid-state drives (SSDs), optical transceivers, and a wide range of consumer, industrial, and network devices. The ISL91302B dual/single output multiphase PMIC provides up to 20A of output current and 94% peak efficiency in a 70mm² solution size, which is more than 40% smaller than competing PMICs (Note).
In addition to the ISL91302B, the Renesas ISL91301A triple-output PMIC and the Renesas ISL91301B quad-output PMIC deliver up to 16 A of output power with 94 percent maximum efficiency. These new programmable PMICs leverage Renesas' R5 modulation technology to provide fast single-cycle transient response, digitally tuned compensation, and an ultra-high switching frequency of 6 megahertz (MHz) (max) during load transients. These features make it easier for power supply designers to create boards with low-profile 2 mm x 2 mm and 1 mm inductors, small capacitors, and only a few passive components.
Renesas PMICs also do not require external compensation components or dividers to establish operating conditions. Each PMIC dynamically changes the number of active phases for optimal efficiency across all output currents. Their low quiescent current, superior light-load performance, precise regulation, and fast dynamic response extend battery life for power-hungry, feature-rich devices.
Key features of the PMIC ISL91302B
• Available in three factory-configurable options for one or two output rails:
o Dual-phase (2+2) configuration supporting 10 A from each output
o Triple-phase (3+1) configuration supporting 15 A from one output and 5 A from the second output
o Four-phase (4+0) configuration supporting 20 A from one output
• Small solution size: 7 mm x 10 mm for 4-phase design
• Input supply voltage range of 2.5V to 5.5V
• Programmable I2C or SPI Vout from 0.3V to 2V
• The R5 modulator architecture balances current loads with phase addition and decay for optimized energy efficiency
• Provides 75μA quiescent current in discontinuous current mode (DCM)
• Independent dynamic voltage scaling for each output
• ±0.7% system accuracy for -10°C to 85°C with remote voltage sensing
• Integrated telemetry ADC senses phase currents, output current, input/output voltages, and array temperature, enabling PMIC diagnostics during operation
• Soft start and fault protection against undervoltage (UV), overvoltage (OV), overcurrent (OC), overtemperature (OT), and short circuit
Main features of the ISL91301A and ISL91301B PMICs
• Available in two factory-configurable options:
o ISL91301A: two-phase, three output rails configured as 2+1+1 phase
o ISL91301B: single-phase, four output rails configured as 1+1+1+1 phase
• 4 A per phase for supply voltages from 2.8V to 5.5V
• 3 A per phase for supply voltages from 2.5V to 5.5V
• Small solution size: 7 mm x 10 mm for 4-phase design
• Programmable I2C or SPI output from 0.3V to 2V
• Provides 62μA quiescent current in DCM mode
• Independent dynamic voltage scaling for each output
• ±0.7% system accuracy from -10°C to 85°C with remote voltage sensing
• Soft start and fault protection against UV, OV, OC, OT, and short circuit
