IOR 20L15T, 20L15TS User Manual

Bulletin PD-20577 rev. E 06/06

Anode

C

Base

e

Base

N

20L15T

20L15TS

SCHOTTKY RECTIFIER 20 Amps

I

= 20Amp

F(AV)

VR = 15V

Major Ratings and Characteristics

Characteristics Values Units

I

Rectangular 20 A

F(AV)

waveform

V

RRM

I

@ tp = 5 μs sine 700 A

FSM

VF@ 19 Apk, TJ=125°C 0.25 V

( Typical)

TJrange - 55 to 125 °C

15 V

20L15T

Description/ Features

The Schottky rectifier module has been optimized for ultra
low forward voltage drop specifically for the OR-ing of paral­lel power supplies. The proprietary barrier technology allows
for reliable operation up to 125 °C junction temperature.
Typical applications are in parallel switching power supplies,
converters, reverse battery protection, and redundant power
subsystems.

125°C TJ operation (VR < 5V)

Single diode configuration

Optimized for OR-ing applications

Ultra low forward voltage drop

Guard ring for enhanced ruggedness and long term
reliability

High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance

Case Styles

20L15TS

athode

Cathode

1

3

/C

Cathode

1

2

3

Anod

TO-220AC D2PAK

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20L15T, 20L15TS

Bulletin PD-20577 rev. E 06/06

Voltage Ratings

Part number Values

V

Max. DC Reverse Voltage (V) @ T

R

V

Max. Working Peak Reverse Voltage (V) @ T

RWM

= 100 °C

J

= 100 °C

J

15

Absolute Maximum Ratings

Parameters Values Units Conditions

I

Max. Average Forward Current 20 A 50% duty cycle @ TC = 85°C, rectangular wave form

F(AV)

* See Fig. 5

I

Max. Peak One Cycle Non-Repetitive 700 5μs Sine or 3μs Rect. pulse

FSM

Surge Current * See Fig. 7 330 10ms Sine or 6ms Rect. pulse

EASNon-Repetitive Avalanche Energy 10 mJ T

A

= 25 °C, I

J

= 2 Amps, L = 6 mH

AS

IARRepetitive Avalanche Current 2 A Current decaying linearly to zero in 1 μsec

Frequency limited by TJ max. VA = 1.5 x VR typical

Following any rated
load condition and with
rated V

RRM

applied

Electrical Specifications

Parameters Values Units Conditions

Typ. Max.

VFMForward Voltage Drop - 0.41 V @ 19A

* See Fig. 1 (1) - 0.52 V @ 40A

0.25 0.33 V @ 19A

0.37 0.50 V @ 40A

IRMReverse Leakage Current - 10 mA TJ = 25 °C

* See Fig. 2 (1) - 600 mA TJ = 100 °C

V

Threshold Voltage 0.182 V T

F(TO)

J

= T

J

rtForward Slope Resistance 7.6 mΩ

CTMax. Junction Capacitance - 2000 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C

LSTypical Series Inductance 8 - nH Measured lead to lead 5mm from package body

dv/dt Max. Voltage Rate of Change 10,000 V/ μs (Rated VR)

TJ = 25 °C

TJ = 125 °C

VR = rated V

R

max.

(1) Pulse Width < 300μs, Duty Cycle <2%

Thermal-Mechanical Specifications

Parameters Values Units Conditions

TJMax. Junction Temperature Range -55 to 125 °C

T

Max. Storage Temperature Range -55 to 150 °C

stg

R

Max. Thermal Resistance 1.5 °C/W DC operation * See Fig. 4

thJC

Junction to Case

R

Typical Thermal Resistance 0.50 °C/W Mounting surface , smooth and greased

thCS

Case to Heatsink For TO-220

R

Max. Thermal Resistance 40 °C/W DC operation

thJA

Junction to Ambient For D2Pak

wt Approximate Weight 2 (0.07) g (oz.)

T Mounting Torque Min. 6 (5) Non-lubricated threads

Max. 12 (10)

Kg-cm
(Ibf-in)

Marking Device 20L15T Case Style TO-220

20L15TS Case Style D2Pak

2

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1000

20L15T, 20L15TS

Bulletin PD-20577 rev. E 06/06

1000

T = 100°C

J

100

R

75°C

100

F

T = 125°C

10

Instantaneous Forward Current - I (A)

1

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6

Fo rwa rd Volta ge Dro p - V (V)

J

T = 75°C

J

T = 25°C

J

FM

Fig. 1 - Maximum Forward Voltage Drop Characteristics

10

10

50°C

25°C

1

Re verse Current - I (m A)

0.1
03691215

Reverse Voltage - V (V)

Fig. 2 - Typical Values of Reverse Current

Vs. Reverse Voltage

10000

T

T = 2 5 °C

J

1000

Junction Capa citanc e - C (pF)

100

0 5 10 15 20

Reverse Vo lta ge - V (V)

R

Fig. 3 - Typical Junction Capacitance

Vs. Reverse Voltage

R

Thermal Impedance Z (°C/W)

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thJC

D = 0.50
D = 0.33
D = 0.25
D = 0.20

0.1
Si n g l e P u l se

(Thermal Resistance)

Not es:

1. Duty f ac to r D = t / t

2. Pe ak T = P x Z + T

0.01

0.00001 0.0001 0.001 0.01 0.1 1 10 100

t , Rec ta ng ular Pulse Dura tio n (Se c o nds)

Fig. 4 - Maximum Thermal Impedance Z

1

thJC

P

DM

t

J

DM

Characteristics

1

t

2

1

thJC

D = 0.75

1

2

C

3