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PV88080

High Efficiency Advanced Feature 4-Channel PMIC

pv88080_block_diagram.jpg

High-voltage buck controller

The PV88080 provides one PWM buck controller and three adjustable synchronous buck regulators. The high voltage buck controller can optionally be used to generate the supply for the other three buck converters. Two pass devices (NMOS FET) for the high side and low side of the high voltage buck controller are external which allows the majority of the buck controller power dissipation to be outside the PV88080. This high voltage buck controller uses a constant on time (COT) control scheme with integrated bootstrap PMOS switch.

In certain applications, multiple PV88080s can be used together to provide enough power rails to power the larger systems. There are three buck converters that can be used to generate the supplies for CPUs, DDR memory and other Auxiliary functions in a typical application. The pass devices of these buck converters are fully integrated, so no external FETs or Schottky diodes are needed. This results in optimized power efficiency and a reduced external component count.

Lifecycle status

● Active

Features

One high-voltage synchronous buck controller with:

  • Wide VIN range, 7 V to 26 V
  • Programmable VOUT (0.8 V to 5.25 V when VIN < 13.2 V, 1.8 V to 5.25 V when VIN > 13.2 V)
  • Up to 20 A IOUT depending on external  MOSFET

Three synchronous buck converters with integrated low RON FET:

  • Buck1: programmable VOUT from 0.75 V to 3.3 V with 5 A continuous output current, and 6 A peak current standalone
  • Buck2: programmable VOUT from 0.9 V to 3.6 V with 2 A continuous output current and 3 A peak current  standalone
  • Buck3: programmable VOUT from 0.9 V to 3.6 V with 2 A continuous output current and 3 A peak current standalone

DVC on buck controller and buck converters

Auto mode on all buck converters, adjustable soft-start, and I2C-compatible interface

GPIO to connect/control the other device

Register-selectable multiple function: mute, reset timer, external thermal sense, and lower input voltage alarm

-40 °C to +85 °C ambient temperature 

Benefits

50% reduction in board area

High integration of rails in single package

Re-programmability = fast re-design

Slew rate control improved PCB cost/performance

DVS for enhanced performance/power scaling

Significantly fewer devices & discretes

Applications

Networking home terminal

WiFi EAP/routers

Supply for digital television processor

Power supply for digital set top box (STB)

Package

32-pin QFN

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Product Briefs and Summaries
Name Date Version
PV88080 Product Brief (426.62 KB)
Datasheets
Name Date Version
PV88080 Datasheet (3.22 MB)
Application notes
Name Date Version
AN-PV-001 Power Sub-System Design Using the PV88080 (312.98 KB)
AN-PV-002 Power Fail Detection and Audio Muting Using the PV88080 (529.9 KB)
AN-PV-003 Temperature Sensing Using the PV88080 (586.15 KB)
AN-PV-004 Dynamically Changing the Output PV88080 Voltage (745.76 KB)
AN-PV-005 Voltage Rail Sequencing (873.02 KB) 23/07/2017 1.0
AN-PV-006 Dynamic Voltage Control (696.26 KB) 17/08/2017 1.0
Shared IRQ Line Considerations AN-PM-059 (329.06 KB) 24/06/2016 1.2
Schematics
Name Date Version
PV88080 Demo Kit Schematic (85.6 KB)
PV88080 Evaluation Board (91.36 KB)
Software Resources
Name Date Version
PV88080 GUI and documentation (54.19 MB) (Registered users only) 16/08/2020 5.7