IR3621 datasheet(4/29 Pages) IRF

Part #	IR3621

Description	2-PHASE / DUAL SYNCHRONOUS PWM CONTROLLER WITH OSCILLATOR SYNCHRONIZATION AND PRE-BIAS STARTUP

PDF	29 Pages

Scroll/Zoom	100%

Manufacturer	IRF [International Rectifier]

Direct Link	http://www.irf.com

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4 / 29 page

IR3621&(PbF)

www.irf.com

PARAMETER

SYMBOL

TEST CONDITION

MIN

TYP

MAX

UNITS

VOUT3 Internal Regulator

Output Voltage

Output Current

Protection Section

OVP Trip Threshold

OVP Fault Prop Delay

OCSET Current

Hiccup Duty Cycle

Hiccup High Level Threshold

Hiccup Low Level Threshold

Thermal Shutdown Trip Point

Thermal Shutdown Hysteresis

Output Drivers Section

LO Drive Rise Time

HI Drive Rise Time

LO Drive Fall Time

Hi Drive Fall Time

Dead Band Time

Output forced to 1.25VREF

Note2

Hiccup pin pulled high, Note2

Note2

CL=1500pF,Figure 2

CL=1500pF, Figure 2

CL=1500pF,Figure 2

See Figure 2

6.25

1.15VREF

140

µs

µA

OVP

OVP(delay)

IOCSet

Tr(LO)

Tr(HI)

Tf(LO)

Tf(HI)

TDB

5.8

1.1VREF

6.7

1.2VREF

0.8

100

Note 2: Guaranteed by design but not tested for production.

Figure 2 - Rise Time, Fall Time and Deadband for Driver Section

High Side Driver

(HDrv)

Low Side Driver

(LDrv)

Deadband

H_to_L

Deadband

L_to_H

IR3621 Datasheet(PDF) 4 Page - International Rectifier

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