HIP4086 datasheet(2/17 Pages) RENESAS

2 / 17 page

HIP4086, HIP4086A

FN4220 Rev 1.00

Page 2 of 17

January 12, 2017

Block Diagram (for clarity, only one phase is shown)

FIGURE 3. BLOCK DIAGRAM

RDEL

xLI

RFSH

UVLO

VDD 20

DIS 10

xHI

2µs Delay

REFRESH

PULSE

UNDERVOLTAGE

DETECTOR

10ns

DELAY

ADJUSTABLE

TURN-ON

DELAY

LEVEL

SHIFTER

CHARGE

PUMP*

xHO

xHB

xHS

xLO

VSS

VDD

100mV

VDD

*The charge pump is

permanently disabled

in the HIP4086A.

COMMON WITH

ALL PHASES

COMMON

WITH ALL

PHASES

COMMON WITH

ALL PHASES

COMMON WITH

ALL PHASES

If the voltage on RDEL is less than 100mV, the

turn-on delay timers are disabled and the high and

low-side drivers can be turned on simultaneously.

If undervoltage is active or if

DIS is asserted, the high and

low-side drivers are turned off.

ADJUSTABLE

TURN-ON

DELAY

DELAY DISABLE

DRIVE ENABLE

Truth Table

INPUT

OUTPUT

ALI, BLI, CLI

AHI, BHI, CHI

DIS

RDEL

ALO, BLO, CLO

AHO, BHO, CHO

XXX

>100mV

X01

X00

<100mV

NOTE: X signifies that input can be either a “1” or “0”.

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