ERICSSON PKJ 4000 PI User Manual

PKJ 4000 PI

37.5-150W DC/DC Power Modules
48V Input Series

• High efficiency 91.5% Typ (5V)
at full load

• Industry standard footprint

• Max case temperature +100ºC

• Wide input voltage range according
to ETSI specifications

• High power density, up to 55W/in

3

• 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 90% efficiency.
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 elec­tronic, 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 high­density 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 under­voltage 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 Components AB has been
an ISO 9001 certified supplier since 1991. For product

program please see back cover.

查询PKJ4111API供应商

Data Sheet AE/LZT 137 57 R1 © Ericsson Components AB, August 1999

Characteristics min max Unit

TCMaximum Operating Case Temperature -40 +100 °C

TSStorage temperature -40 +125 °C

VIContinuous input voltage -0.5 +75 Vdc

V

ISO

Isolation voltage 1,500 Vdc
(input to output test voltage)

V

RC

Remote control voltage 15 Vdc

I2t Inrush transient 1 A2s

Characteristics Conditions min typ max Unit

V

I

Input voltage 36 72 Vdc
range

1)

V

Ioff

Turn-off input Ramping from 31 33 Vdc
voltage higher voltage

V

Ion

Turn-on input Ramping from 34 36 Vdc
voltage lower voltage

C

I

Input capacitance 2.8 µF

I

Iac

Reflected 5 Hz to 20 MHz-150W 20 mA p-p
ripple current

50 W 1.6

I

I

max Maximum input V

I

= V

I

min 75 W 2.4 A

current 100 W 3.2

150 W 5.3

P

Ii

Input idling power IO= 0 2.5 7.5 W

P

RC

Input
stand-by power V

I

= 50V RC open .05 2.5 W

(turned off with RC)

TRIM Maximum input 6 Vdc

voltage on trim pin

Characteristics Test procedure & conditions

Random IEC 68-2-34EdFrequency 10...500 Hz
Vibration Spectral density 0.025 g2/Hz

Duration 10 min in each

direction

Sinusoidal IEC 68-2-6 F

c

Frequency 10-500 Hz

Vibration Amplitude 0.75mm

Acceleration 10g
# of cycles 10 in each axis

Shock IEC 68-2-27 E

a

Peak acceleration 50 g

(half sinus) Duration 3ms

Temperature IEC 68-2-14 N

a

Temperature -40°C...+100°C

change Number of cycles 300

Accelerated IEC 68-2-3 C

a

Temperature 85°C

damp heat with bias Humidity 85% RH

Duration 500 hours

Solder IEC 68-2-20 T

b

Temperature, solder 260° C

resistibility method IA Duration 10...13 s

General

Absolute Maximum Ratings

Input

TC < T

Cmax

Environmental Characteristics

2

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.
For design margin and to enhance system reliability,
it is recommended that the PKJ series DC/DC power
modules are operated at case temperatures below 90°C.

1) See also Input Voltage in the Operating
Information section

Safety

The PKJ Series DC/DC power modules are
designed to comply with EN 60 950 Safety of
information technology equipment including
electrical business equipment.

The PKJ DC/DC power modules are also
recognized by UL and meet the applicable
requirements in UL 1950, Safety of information
technology equipment and applicable Canadian
safety requirements.

The isolation is an operational insulation in
accordance with EN 60 950. The DC/DC power
module should be installed in end-use equipment,
in compliance with the requirements of the
ultimate application, and is intended to be
supplied by an isolated secondary circuit.
Consideration should be given to measuring
the case temperature to comply with T

C

max

when in operation.

When the supply to the DC/DC power
module meets all the requirements for SELV
(<60Vdc), the output is considered to remain
within SELV limits (level 3). If connected to a 60V
DC power system, reinforced insulation must be
provided in the power supply that isolates the
input from the mains. Single fault testing in the
power supply must be performed in combination
with the DC/DC power module to demonstrate
that the output meets the requirement for SELV.
One pole of the input and one pole of the output
is to be grounded or both are to be kept floating.

3

Data Sheet AE/LZT 137 57 R1 © Ericsson Components AB, August 1999

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 not needed, connect to -Out)
Trim Output voltage adjust
+Sen Positive remote sense (if sense 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

Safety (continued)

The galvanic isolation is verified in an electric strength test. The
test voltage (V

ISO

) between input and output is 1,500 Vdc for

60 sec. Leakage current is less than 1

µA @ 50Vdc.

Flammability ratings of the terminal support and internal plastic
construction details meet UL 94V-0.
A fuse should be used at the input of each PKJ series power module.
If a fault occurs in the power module, that imposes a short on the
input source, this fuse will provide the following two functions:

• Isolate the failed module from the input source so that the
remainder of the system may continue operation.

• Protect the distribution wiring from
overheating.

A fast blow fuse should be used with a rating of 10A or less. It is
recommended to use a fuse with the lowest current rating, that is
suitable for the application.

Thermal Data

The PKJ series DC/DC power modules has a robust thermal design
which allows operation at case (baseplate) temperatures (T

C

) up to
+100°C. The main cooling mechanism is convection (free or forced)
through the case or optional heatsinks.

The graph above shows the allowable maximum output
current to maintain a maximum +100°C case temperature.
Note that the ambient temperature is the air temperature
adjacent to the power module which is typically elevated
above the room environmental temperature.

The graphs below can be used to estimate case temperatures
for given system operating conditions (see Thermal design).
For further information on optional heatsinks, please contact
your local Ericsson sales office.

Thermal Design

The thermal data can be used to determine thermal performance
without a heatsink.

Case temperature is calculated by the following formula:

T

C

= TA+ Pdx R

thC-A

where Pd= P

O

(1/η - 1)

Where:
T

C

: Case Temperature

T

A

: Local Ambient Temperature

P

d

: Dissipated Power

R

thC-A

: Thermal Resistance from TCto T

A

The efficiency η can be found in the tables on the following pages.

For design margin and to enhance system reliability, it is recommend­ed that the PKJ series DC/DC power modules are operated at case
temperatures below 90°C.

4

Data Sheet AE/LZT 137 57 R1 © Ericsson Components AB, August 1999

5

Data Sheet AE/LZT 137 57 R1 © Ericsson Components AB, August 1999

Characteristics Conditions Output

min typ max Unit

V

Oi

Output voltage initial TC= +25°C, VI= 53V, IO= I

O

max 2.45 2.5 2.55 V

setting and accuracy

Output adjust range IO= 0 to I

O

max 2.0 2.75 V

V

O

Output voltage IO= 0 to I

O

max 2.38 2.63 V

tolerance band

Line regulation VI= 36...72V, IO= I

O

max 2 15 mV

Load regulation VI= 53V, IO= 0 to I

O

max 2 15 mV

V

tr

Load transient Load step = 0.25 x I

O

max

±

160 mVpeak

voltage deviation dI/dt = 1A/µs

t

tr

Load transient 50 µs
recovery time

t

s

Start-up time From VIconnection to VO= 0.9 x V

O

nom 35 55 ms

I

O

Output current 0 30 A

P

O

max Max output power At V

O

= V

O

nom 75 W

I

lim

Current limit threshold VO= 0.90 x V

O

nom @ T

C

<100°C 31 35 41 A

I

SC

Short circuit current 35 41 A

VOac Output ripple and noise IO= I

O

max f < 20 MHz 75 150 mVp-p

SVR Supply voltage f<1 kHz -53 dB

rejection

OVP Overvoltage protection 3.0 3.3 3.9 V

Output

PKJ 4719 PI (75W)

TC= -40...+100°C, VI= 36...72 V dc unless otherwise specified.

Characteristics Conditions min typ max Unit

η Efficiency TA= +25°C, VI= 53V, IO= I

O

max 84 87 %

P

d

Power dissipation IO= I

O

max, V

I

= 53V 11.2 W

f

O

Switching frequency IO= 0.1...1.0 x I

O

max 150 kHz

Miscellaneous

Characteristics Conditions Output

min typ max Unit

V

Oi

Output voltage initial TC= +25°C, VI= 53V, IO= I

O

max 2.45 2.50 2.55 V

setting and accuracy

Output adjust range IO= 0 to I

O

max 2.0 2.75 V

V

O

Output voltage IO= 0 to I

O

max 2.38 2.63 V

tolerance band

Line regulation VI= 36...72VIO= 0 to I

O

max 2 15 mV

Load regulation VI= 53V, IO= 0 to I

O

max 2 15 mV

V

tr

Load transient Load step = 0.25 x I

O

max ±100 mVpeak

voltage deviation dI/dt = 1A/µs

t

tr

Load transient 50 µs
recovery time

t

s

Start-up time From VIconnection to VO= 0.9 x V

O

nom 30 55 ms

I

O

Output current 0 20 A

P

O

max Max output power At V

O

= V

O

nom 50 W

I

Iim

Current limit threshold VO= 0.90 x V

O

nom @ T

C

<100°C 21 25 31 A

I

SC

Short circuit current 25 31 A

VOac Output ripple and noise IO= I

O

max f < 20 MHz 75 150 mVp-p

SVR Supply voltage f<1 kHz -53 dB

rejection

OVP Overvoltage protection 3.0 3.3 3.9 V

Output

PKJ 4519 PI (50W)

TC= -40...+100°C, VI= 36...72 V dc unless otherwise specified.

6

Data Sheet AE/LZT 137 57 R1 © Ericsson Components AB, August 1999

Characteristics Conditions min typ max Unit

η Efficiency TA= +25°C, VI= 53V, IO= I

O

max 86 89 %

P

d

Power dissipation IO= I

O

max, V

I

= 53V 6.2 W

f

O

Switching frequency IO= 0.1...1.0 x I

O

max 150 kHz

Miscellaneous