The development of smart terminal equipment has more and more functions, but its size is gradually reduced and its use time is also long. In view of this, application processors such as smart phones and tablet PCs require smaller power supplies and higher output current and efficiency to maximize battery life. Product designers urgently need this solution to meet these challenges.
Renesas Electronics has launched three multi-output multi-phase step-down power management PMICs---ISL91302B, ISL91301A and ISL91301B in response to the above problems, which can provide the most efficient power management for smartphones and tablet application processors, while having the smallest The volume of the exhibition board. In addition, it can also provide power management for artificial intelligence (AI) processors, FPGAs and industrial MPUs, which is very suitable for solid state drives (SSD), optical transceivers and various consumer electronic products, as well as various loads in industrial and network equipment powered by.
Figure 1 Renesas Electronics introduced the most efficient and smallest multiphase power management ICs ISL91302B, ISL91301A/B
The three power management PMICs can dynamically change the number of working phases within the full load current range to obtain the best efficiency. Its ultra-low quiescent current, excellent light-load efficiency, high voltage regulation accuracy and fast dynamic response characteristics make Power supply designers can more easily use thin inductors, small capacitors, and a small number of passive components to design power solutions to solve the most difficult printed circuit board layout problems, dynamically expand performance, and extend battery runtime.
Product advantages
In Renesas’ multi-output multi-phase step-down power management, ISL91302B dual/single output multi-phase PMIC can provide up to 20A and 94% peak efficiency, while ISL91301A three-output PMIC and ISL91301B four-output PMIC can provide up to 16A The peak efficiency, and has a peak efficiency of 94%.
Figure 2: Comparison of efficiency between ISL91302B and ISL91301A/B PMICs and competing products
The ISL91302B and ISL91301A/B PMICs all support remote output voltage feedback, and the outputs have dynamic voltage adjustment DVS, with comprehensive protection functions, such as overvoltage protection, undervoltage protection, overcurrent protection, and one-time programmable. The chip supports I2C and SPI communication protocols, and the programmable frequency is 2MHz~6MHz. In addition, they also have ultra-small chip size and high power efficiency, and can provide a variety of package sizes for various product circuit size requirements. The main features are as follows:
Compact PCB, thin and light solution
▪ The total size of the 4 output/phase solution kit is 7×10mm2
â–ª Small WLCSP package
â–ª 4Mhz frequency support ïƒ Sensors whose shell size is less than 2×2×1mm
â–ª Fast transient ïƒ less output capacitor
â–ª No external components required for compensation, output voltage settings, VOUT settings, etc.
high efficiency
â–ª 91% peak efficiency 3.3V input, 1.0V/4A output
Easy to design-no board-level design required
â–ª Internal compensation-no design compensation required
Multiple package options
â–ª WLCSP, with a pitch of 0.4mm, mass production
â–ª The BGA pitch is 0.8mm, and samples are available (ISL91302B)
ISL91302B product features
ISL91302B multi-output multi-phase step-down power management IC supports 2.5~5.5V power supply voltage, 0.3~2.0V programmable output. With ultra-low Iq as low as 75uA in DCM mode, peak efficiency is as high as 94%, and system accuracy is ±0.5%. ISL91302B supports the following three output configurations:
Dual output: 2+2; two two-phase, maximum output current: 10A+10A
Dual output: 3+1; one three-phase, one single-phase, maximum output current: 15A+5A
Single output: 4+0; one four-phase, maximum output current: 20A
Figure 3: ISL91302B supports three output configurations
The ISL91302B has a package size of 2.55mm×3.67mm, and a WLCSP ultra-small package with a 0.4mm pitch and 54 solder balls.
Figure 4: ISL91302B package
ISL91301A/B product features
ISL91301A/B multi-output multi-phase step-down voltage management IC also supports 2.5~5.5V power supply voltage, 0.3~2.0V programmable output. It has an ultra-low Iq as low as 62uA in low power mode, peak efficiency is as high as 94%, and system accuracy is ±0.7%. ISL91301A/B supports the following two output configurations:
Three-way output ISL91301A: 2+1+1, maximum output: 8A+4A+4A
Four-way output ISL91301B: 1+1+1+1, maximum output: 4A+4A+4A+4A
Figure 5: ISL91301A/B supports two output configurations
ISL91301A/B has a package size of 2.57mm×2.92mm, and a WLCSP ultra-small package with 42 solder balls, with a solder ball pitch of 0.4mm.
Figure 6: ISL91301A/B package
Design resources
Renesas Electronics provides complete product documentation, evaluation boards and sample applications for ISL91302B and ISL91301A/B power management ICs. In addition, an evaluation board is also provided for the PMIC, which can facilitate developers to perform functional testing and evaluation.
ISL91302B power management IC has three evaluation kits, as shown below:
ISL91302B22-EVZ (2+2 configuration, 10A+10A)
ISL91302B31-EVZ (3+1 configuration, 15A+5A)
ISL91302B40-EVZ (4+0 configuration, 20A)
Figure 7: ISL91302B power management IC has three evaluation kits
ISL91301A/B power management IC has four evaluation kits, as shown below:
ISL91301AII-H-EV1Z (2+1+1 configuration, 8A+4A+4A)
ISL91301AII-L-EV1Z (2+1+1 configuration, 6A+3A+3A)
ISL91301BII-H-EV1Z (1+1+1+1 configuration, 4A+4A+4A+4A)
ISL91301BII-L-EV1Z (1+1+1+1 configuration, 3A+3A+3A+3A)
Figure 8: ISL91301A/B power management IC has four evaluation kits
Renesas Electronics also provides a complete set of demonstration kits for these three multi-phase step-down power management ICs, which can be easily connected to the customer's graphical interface for development through EVB, I2C control software and I2C-USB adapters.
Figure 9: Renesas Electronics provides a complete demonstration kit for these three multiphase step-down power management ICs
Multiphase step-down IC products have many internal registers, and the default register configuration values ​​can meet most application requirements. On this basis, for special applications, the registers can be optimized to meet the needs of different applications, ensuring that each design can achieve the best performance.
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