General Description

PV88090 is a power management unit (PMU) optimized for supplying systems with central

processing units (CPU), input/output (I/O), and dual data rate (DDR) memory. The target application

range covers television, set-up box, wifi routers, and enterprise access point and network

addressable servers.

PV88090 features a two-phase buck converter providing up to 9.5 A current, and two one-phase

buck converters for dual date rate (DDR) memory and auxiliary power. High efficiency is achieved

over a wide load range by using automatic pulse frequency modulation (PFM). All power switches

are integrated, eliminating the need for external Schottky diodes are not needed. This optimizes

power efficiency and reduces the external component count. Two LDO regulators with programmable

output voltage are integrated and provide up to 400 mA. PV88090 provides dynamic voltage control

(DVC) via I

2C command to support adaptive adjustment of the supply voltage based on the processor

loading. All power blocks have over-current circuit protection and the start-up timing can be

controlled through the I

2C interface. The supply voltages of PV88090 control can be realized via

direct register writes through the I

2C interface to the operating point of the system.

PV88090 includes over-temperature and over-current protection for increased system reliability,

without external sensing components. A soft-start mechanism limits the inrush current from the input

node and secures a slope-controlled rail activation. A standby mode provides reduced power

consumption. Optional standby operation for DDR memory, auxiliary buck, and analog core LDO are

configurable in PV88090 for optimizing the power rails. The PV88090is available in a 30-pin QFN

package and is specified from -40 °C to 85 °C ambient temperature.

Key Features

■ Input voltage 4.75 V to 5.25 V

■ Three synchronous buck converters with

integrated low RON FET

□ Buck1: Programmable output voltage from

0.9 V to 1.3 V with 9.5 A continuous output

current, 11 A peak current if standalone

□ Buck2: Programmable output voltage from

1 V to 2.5 V with 2 A continuous output

current

□ Buck3: Programmable output voltage

1.3 V to 3.4 V with 2 A continuous output

current

□ 93 efficiency

□ Auto mode on all three buck converters

■ Integrated power switches

■ DVC for buck converters

■ 2 LDO regulators

□ LDO1: 1.05 V to 1.23 V, 400 mA

LDO2: 1.8 V to 3.3 V, 250 mA

■ Adjustable soft-start

■ I

2C compatible interface

■ -40 ºC to +85 ºC ambient temperature

range

■ Custom 30-pin FC-MQFN package with

thermal pad, 0.5 mm pin pitch