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ISL8120 Functional Diagram

ISL8120CRZ

Obsolete
Renesas Electronics Corporation

DUAL/N-PHASE BUCK PWM CONTROLLER WITH INTEGRATED DRIVERS

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ISL8120 Functional Diagram

ISL8120CRZ

Obsolete
Renesas Electronics Corporation

DUAL/N-PHASE BUCK PWM CONTROLLER WITH INTEGRATED DRIVERS

Find alt

Description

General part information

ISL8120 Series

The ISL8120 integrates two voltage-mode PWM leading-edge modulation control, with input feed-forward synchronous buck PWM controllers, to control a dual independent voltage regulator or a 2-phase single output regulator. It also integrates current sharing control for the power module to operate in parallel, which offers high system flexibility. The ISL8120 integrates an internal linear regulator, which generates VCC from input rail for applications with only one single supply rail. The internal oscillator is adjustable from 150kHz to 1. 5MHz, and is able to synchronize to an external clock signal for frequency synchronization and phase paralleling applications. Its PLL circuit can output a phase-shift programmable clock signal for the system to be expanded to 3-, 4-, 6-, 12- phases with desired interleaving phase shift. The ISL8120’s Fault Hand Shake feature protects any channel from overloading/stressing due to system faults or phase failure. The undervoltage fault protection features are also designed to prevent a negative transient on the output voltage during falling down. This eliminates the Schottky diode that is used in some systems for protecting the load device from reversed output voltage damage.

Technical Specifications

Parameters and characteristics for this part

SpecificationISL8120CRZ
Clock SyncYes
Control FeaturesEnable, Current Limit, Power Good
Duty Cycle (Max)90 %
Frequency - Switching (Max)1.5 MHz
Frequency - Switching (Min)150 kHz
FunctionStep-Down
Mounting TypeSurface Mount
Number of Outputs2
Operating Temperature (Max)70 °C
Operating Temperature (Min)0 °C
Output ConfigurationPositive
Output Phases2
Output TypeTransistor Driver
Package / Case32-VFQFN Exposed Pad
Package Length5 mm
Package Name32-QFN
Package Width5 mm
Synchronous RectifierYes
TopologyBuck
Voltage - Supply (Vcc/Vdd) Maximum5.6 V
Voltage - Supply (Vcc/Vdd) Minimum3 V

Pricing

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CAD

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