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ISL78224ANZ

Flyback Regulator Positive Output Step-Up/Step-Down PMBus DC-DC Controller IC 64-TQFP-EP (10x10)

Manufacturer:

Renesas Technology Corp
Mfr.Part #:

ISL78224ANZ
Datasheet:

ISL78224ANZ Datasheet (PDF)
Pkg. Name:

Q64.10X10H
Pkg. Previous Code:

QAB
Pkg. Code:

QAB
Lead Count:

64
EDA/CAD Models:

Request Free CAD Models for ISL78224ANZ

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ISL78224ANZ General Description

The ISL78224 is a 4-phase, bidirectional, synchronous PWM controller designed to perform power conversion between 12V and 48V buses up to 3kW at >95% conversion efficiency. One ISL78224 supports both Buck and Boost power conversion, enabling a compact and robust design with minimum components. The ISL78224 regulates both voltage and current to control power transfer from bus to bus. The multiphase architecture uses interleaved timing to support up to four parallel power stages per ISL78224. By interleaving the power stages, the ripple frequency is multiplied, reducing input and output ripple voltage and current. Lower ripple results in fewer input/output capacitors and therefore lower component cost and smaller circuit implementation. The IC is designed to be interleaved in a master/slave architecture to be scalable for higher power. Integrated within the device is a dual-output Flyback controller that generates both a 12V supply for the power stage FET drivers and a 6V supply for the ISL78224 from either of the two buses. A 200mA auxiliary linear regulator supplies a local microcontroller or interface devices. A PMBus interface provides system control and diagnostics to support functional safety requirements. This digital interface offers the system controller the ability to program operating modes, voltage and current limit warning and protection thresholds, individual fault response, and rapid fault condition detection.

Key Features

4-phase bidirectional synchronous 12V to 48V controller
Master/slave architecture supports up to 4 ICs in parallel
Voltage and current regulation
Phase dropping facilitated with companion FET driver
2% current monitor gain accuracy from 0 to full load
Supply and clock redundancy for functional safety
Cycle-by-cycle peak current limiting
Cycle-by-cycle negative current limiting
Digitally programmable average current limit
Analog and/or digital control of output voltage
PMBus for status monitoring and fault response control
Selectable phase dropping and diode emulation for light-load efficiency improvement
Comprehensive protection with selectable hiccup or latch-off fault responses
Digitally programmable warning and fault thresholds
Dual-output Flyback controller
200mA adjustable output linear regulator
10mmx10mm 64 Ld TQFP with exposed pad thermal interface
AEC-Q100 Grade 1

Specifications

Pkg. Name:	Q64.10X10H	Pkg. Previous Code:	QAB
Pkg. Code:	QAB	Lead Count:	64
Length:	10 mm	Width:	10 mm
Thickness:	0.99 mm	Pb (Lead) Free:	Yes
Carrier Type:	Tray	Pkg. Type:	TQFP-EP
Moisture Sensitivity Level (MSL):	3	Pb Free Category:	Pb-Free 100% Matte Tin Plate w/Anneal-e3