Highly Integrated Triple/Quad Output PMIC
Intersil's ISL91211 highly integrated PMIC delivers 91% efficiency at 1.1V output voltage for application processors, GPUs, FPGAs and high-performance system power. The PMIC’s low RDS(on) MOSFETs and programmable PWM frequency allows designers to use fewer low-profile external components, enabling a 50mm2 power-supply that is 40% smaller than competing solutions.
By leveraging Intersil’s latest R5™ modulation technology, the ISL91211 is able to provide the industry’s fastest single-cycle transient response and highest switching frequency (4MHz) during load transients while reducing board footprint and BOM costs.
The ISL91211 triple/quad output PMIC is ideal for smartphones, tablet computers, solid-state drives, networking and wireless IoT devices.
- ±0.7% system accuracy
- 2.5V to 5.5V supply voltage
- I2C and SPI programmable output from 0.3V to 1.2V (Output range of 2V can be supported with a different factory OTP)
- 5A per phase output current capability
- Factory configurable output
- ISL91211A: 2 + 1 + 1 phase
- ISL91211B: 1 + 1 +1 +1 phase
- Independent Dynamic Voltage Scaling (DVS) for each output
- Low IQ in Low Power mode
- Automatic Diode Emulation mode for highest efficiency
- Soft-start and fault detection (UV, OV, OC, OT)
- Remote sense monitor
- 2.551mmx3.670mm 54 ball WLCSP with 0.4mm pin pitch
The ISL91211A is a 4-phase, three output programmable Power Management IC (PMIC) and the ISL91211B is a 4-phase, four output programmable PMIC. They are optimized with highly efficient, synchronous buck converters capable of multiphase and single-phase operations that can deliver up to 5A per phase continuous output current. It features four buck controllers and has the capability to reconfigure its power stages to these controllers. This flexibility allows seamless design-in, in a wide range of applications where high output power and small solution size are needed.
ISL91211A and ISL91211B integrate low ON-resistance MOSFETs and programmable PWM frequency, allowing the use of very small external inductors and capacitors. They feature automatic Diode Emulation and Pulse Skipping modes under light-load conditions to further improve efficiency and maximize battery life. The ISL91211A and ISL91211B deliver a highly robust power solution by featuring a controller based on Intersil’s proprietary R5 Technology, it provides tight output accuracy and load regulation, ultra-fast transient response, seamless DCM/CCM transitions, and requires no external compensation.
In addition to the standard interrupt, chip enable, and watchdog reset functions, ISL91211A and ISL91211B also feature four MPIOs and two GPIOs capable of supporting SPI, I2C communication protocol, and various other pin mode functions.
- Smart phones
- Tablet PCs
- Peripheral notebook power
|# of Outputs||4||2||4||4|
|VIN (min) (V)||2.5||2.75||2.5||2.3|
|VIN (max) (V)||5.5||5.5||5.5||5.5|
|VOUT (min) (V)||.3||0.6||0.8||0.8|
|VOUT (max) (V)||1.2||5.5||5.5||5.5|
|IOUT (max) (A)||20 (5,5,5,5) or (10,5,5)||0.8||1.5||0.8|
|IQ||1 µA||50 µA||50 µA|
|Switching Freq. (max)||4 MHz||2.25 MHz||3.4 MHz||3.4 MHz|
|Switching Freq. (min)||4 MHz||2.25 MHz||2.6 MHz||2.6 MHz|
|Peak Efficiency (%)||90||96||87||92|
|Control Type||Current Mode||Current Mode||Current Mode||Current Mode|
|ISL91211A, ISL91211B Data Short|
Triple/Quad Output Power Management IC
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