PKJ4318PITLA - Ericsson, Inc.

PKJ 4518 PIT/PKJ 4318 PIT/PKJ 4218 PIT

Advanced Specification

15-30A DC/DC Power Modules

48V Input, 1.8V Output

• High efficiency 87.5% Typ (15A)

at full load

• Industry standard footprint

• Max case temperature +100ºC

• Wide input voltage range according

to ETSI specifications

• High power density, up to 55W/in3

• 1,500 Vdc isolation voltage

• MTBF > 3 million hours in

accordance with Bellcore TR-332

The PKJ series represents a “third generation” of High

Density DC/DC Power Modules providing high efficiencies.

To achieve this high efficiency, Ericsson uses proprietary drive

and control circuits with planar magnetics and low resistivity

multilayer PCB technology, and a patent pending topology

with active rectification. The PKJ series can be used without

bulky and height consuming heatsinks, resulting in a lower

total cost. This also provides narrow board spacing for elec-

tronic, shelf based applications.

The products are in the industry standard package size and

offer a beneficial alternative to competing products on the

market. Because for certain applications they may not

require heatsinks, they are ideal for cost sensitive or high-

density applications.

The PKJ series also offers the flexibility of using a heatsink

when needed, enabling reduced airflow, extended reliability

or higher ambient temperature operation in a wide range of

48V and 60V DC powered systems. Similar to other

Ericsson Power Modules, the PKJ series includes an under-

voltage shut down facility, protecting the associated batteries

from being too deeply discharged. The PKJ series also offers

over-voltage protection, over-temperature protection and is

short circuit proof.

These products are manufactured using highly automated

manufacturing lines with a world-class quality commitment

and a five-year warranty. Ericsson Microelectronics has been

an ISO 9001 certified supplier since 1991.

For product program please see back cover.

Characteristics Conditions min typ max Unit

VIInput voltage 36 75 Vdc

range

VIoff Turn-off input Ramping from 31 33 Vdc

voltage higher voltage

VIon Turn-on input Ramping from 34 36 Vdc

voltage lower voltage

CIInput capacitance 2.35 µF

IIac Reflected 5 Hz to 20 MHz 20 mA p-p

ripple current

IImax Maximum input VI= VImin 27 W 1.0 A

current 36 W 1.3

54 W 2.0

PIi Input idling power IO= 0 2.5 7.5 W

PRC Input

stand-by power VI= 50V RC open 0.6 1.5 W

(turned off with RC)

TRIM Maximum input 6 Vdc

voltage on trim pin

General

Input TC < TCmax

Designation Function

-In Negative input

Case Connected to base plate

RC Remote control (primary).

To turn-on and turn-off the output

+In Positive input

-Out Negative output

-Sen Negative remote sense

(if sense is not needed, connect to -Out)

Trim Output voltage adjust

+Sen Positive remote sense

(if sense is not needed, connect to +Out)

+Out Positive output

Connections

Weight

85 grams

Case

Aluminum baseplate with metal standoffs.

Pins

Pin material: Brass

Pin plating: Tin/Lead over Nickel.

Mechanical Data

PKJ 4518 PIT/PKJ 4318 PIT/PKJ 4218 PIT TC= -40...+100°C, VI= 36...75 V dc unless otherwise specified.

Characteristics Conditions Device Output Unit

min typ max

VOi Output voltage initial TC= +25°C, VI= 53V, IO= IOmax All 1.77 1.8 1.83 V

setting and accuracy

Output adjust range IO= 0 to IOmax All 1.44 2.0 V

IOOutput current A

VOOutput voltage IO= 0 to IOmax All 1.71 1.89 V

tolerance band

Line regulation IO= IOmax All 2 15 mV

Load regulation VI= 53V, IO= 0 to IOmax All 2 15 mV

tr Load transient Load step = 0.25 x IOmax All ±100 mVpeak

voltage deviation dI/dt = 1A/µs

ttr Load transient All 50 µs

recovery time

tsStart-up time From VIconnection to VO= 0.9 x VOnom All 20 30 ms

IIim Current limit threshold VO= 0.96 VOnom @ TC<100°C A

ISC Short circuit current A

VOac Output ripple and noise IO= IOmax f<20 MHz All 60 120 mVp-p

SVR Supply voltage f<1kHz All -50 dB

rejection (ac)

OVP Over voltage protection Vin = 50V All 2.5 2.9 V

Output

Characteristics Conditions Device min typ max Unit

ηEfficiency TA= +25°C, VI= 53V, IO= IOmax %

PdPower dissipation IO= IOmax, VI= 53V W

Miscellaneous

Thermal Data

Characteristics min max Unit

TCCase temperature -40 +100 °C

@ max output power

TSStorage temperature -40 +125 °C

VIContinuous input voltage -0.5 +80 Vdc

VISO Isolation voltage 1,500 Vdc

(input to output test voltage)

VRC Remote control voltage 15 Vdc

I2t Inrush transient 1 A2s

Absolute Maximum Ratings

0102030

PKJ 4518 PIT Efficiency (typ)

36V

53V

75V

Stress in excess of Absolute Maximum Ratings may cause permanent damage. Absolute Maximum

Ratings, sometimes referred to as “no destruction limits,” are normally tested with one parameter

at a time exceeding the limits of output data or electrical characteristics. If exposed to stress above

these limits, function and performance may degrade in an unspecified manner.

8.8

5.4

3.9

87.5

PKJ 4518 PIT

PKJ 4318 PIT

PKJ 4218 PIT

030

020

015

PKJ 4518 PIT

PKJ 4318 PIT

PKJ 4218 PIT

PKJ 4518 PIT

PKJ 4318 PIT

PKJ 4218 PIT

PKJ 4518 PIT

PKJ 4318 PIT

PKJ 4218 PIT

PKJ 4518 PIT

PKJ 4318 PIT

PKJ 4218 PIT

30.5 35 40

20.5 24 29

15.5 18 21

36 40

25 29

19 21

Ericsson Microelectronics’ Sales Offices:

Brazil: Phone: +55 11 681 0040 Fax: +55 11 681 2051

Denmark: Phone: +45 33 883 109 Fax: +45 33 883 105

Finland: Phone: +358 9 299 4098 Fax: +358 9 299 4188

France: Phone: +33 1 4083 7720 Fax: +33 1 4083 7741

Germany: Phone: +49 211 534 1516 Fax: +49 211 534 1525

Great Britain: Phone: +44 1793 488 300 Fax: +44 1793 488 301

Hong Kong: Phone: +852 2590 2356 Fax: +852 2590 7152

Italy: Phone: +39 2 7014 4203 Fax: +39 2 7014 4260

Japan: Phone: +81 3 5216 9091 Fax: +81 3 5216 9096

Norway: Phone: +47 66 841 906 Fax: +47 66 841 909

Russia: Phone: +7 095 247 6211 Fax: +7 095 247 6212

Spain: Phone: +34 91 339 1858 Fax: +34 91 339 3145

Sweden: Phone: +46 8 721 6258 Fax: +46 8 721 7001

United States: Phone: +1 877 374 2642 Fax: +1 972 583 8355

Ericsson Inc.

Microelectronics

701 North Glenville Drive

Richardson, Texas 75081

Phone: 877-ERICMIC

www.ericsson.com/micro

Information given in this data sheet is believed

to be accurate and reliable. No responsibility is

assumed for the consequences of its use nor for

any infringement of patents or other rights of

third parties which may result from its use. No

license is granted by implication or otherwise

under any patent or patent rights of Ericsson

Inc. These products are sold only according to

Ericsson Inc.’s general conditions of sale, unless

otherwise confirmed in writing.

The contents of this document are subject

to revision without notice due to continued

progress in design and manufacturing.

Advanced Specification

AE/LZT 108 3967 R1

VIVO/IOPOmax Ordering Number

48/60 V 1.8V/30A 54W PKJ 4518 PIT

48/60 V 1.8V/20A 36W PKJ 4318 PIT

48/60 V 1.8V/15A 27W PKJ 4218 PIT

Product Program

Option Suffix EExxaammppllee

Product Options

Negative remote on/off logic

Industry Standard Trim,

(i.e. Vout Adjust)

Positive remote on/off logic

Lead length of 0.145" ± 0.010"

–

PKJ 4518 PIT

PKJ 4518 PIPT

PKJ 4518 PITLA

The PKJ 4000 DC/DC power modules will be available with the different

options listed in the Product Options table.

Please check with the factory for availability.