IR3312S Datasheet IR3312STRL, IR3312, IR3312S | P4-P6

IR3312(S)

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Functional Block Diagram

Symbol Parameter Min. Typ. Max. Units Test Conditions

Ratio I load / IIfb current ratio 2,400 2,800 3,300 — T

= 25

C ,Rfb = 500Ω,

I = 30A

Ratio_TC Iload/Ifb variation over temperature -5 0 +5 % T

= -40 T0 +150

offset Load current diagnostic offset -0.45 0 0.45 A I = 2A

Trst Ifb response time (low signal) — 5 15 µs 90% of the I load step

Current Sense Characteristics

4mA

70V

active clamp

disconnection

charge

pump

fast turn-off

driver

reverse

battery

protection

Tj > 165 °C

I out > 30 A

Ifb

OUT

VCC

On/Off

Set

Reset

latch

timer

1.5 ms

timer

300 us

Wait

33V

Min. pulse

Ω

70V

33V

43V

36V

IR3312(S)

WWW.IRF.COM 5

Vcc

10 %

Td on

Tr1

Vcc-Vout

Vcc-Vin

90%

Tr2

DV/dt(on)

Figure 1 - Voltages and currents definitions Figure 2 - Switching time definitions (turn-on)

IR3312

Vcc-Vin

max

Vcc-Vin1

max

Vcc-Vin (op)

Vih

Vil

Vhys

Iin

max

Iin1,2

Iin(on)

Vcc-Vout

max

Vclamp1

Vclamp2

Iout

max

-Ids

cont.

-Ids

pulsed

Iout

85°C

Isd

Vcc

Out

Ifb

VIfb

Ifb

Lead Assignments

Part Number

1 2 3 4 5

5 Lead - TO220

IR3312

3 (Vcc)

5 Lead - D

PAK (SMD220)

IR3312S

3 (Vcc)

1 2 3 4 5

1 - In

2 - Ifb

3 - Vcc (tab)

4 - NC

5 - Out

IR3312(S)

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90%

10 %

Td of

Vcc-Vout

Vcc-Vin

DV/dt

(

off

)

Figure 3 - Switching time definitions (turn-off) Figure 4 - Active clamp waveforms

Figure 5 - Current sense precision:

Accurate measurement only when the power Mosfet is fully ON

Ids

Vout

Vin

T clamp

Vds clamp

( see Design tip to evaluate power dissipation )

Vcc

Vcc-Vclamp

Iout

12V

0 V

Vcc-Vin

T minpulse

0 V

Wait

Figure 6 - Minimum pulse & WAIT

function

I Load

Ifb

Vin

clamp

24 us (typ.)

Precise measurement

P1-P3 P4-P6 P7-P9 P10-P12 P13-P13

IR3312S

Mfr. #:

Buy IR3312S

Manufacturer:

Infineon Technologies

Description:

IC SWITCH HI-SIDE 50V 2.8A D2PAK

Lifecycle:

New from this manufacturer.

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IR3312S

IR3312S

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