PKU5310EPI datasheet(10/25 Pages) ERICSSON

Part #	PKU5310EPI

Description	DC/DC converters, Input 18-72 V, Output up to 10 A/35 W

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Manufacturer	ERICSSON [Ericsson]

Direct Link	http://www.ericsson.com

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Ericsson Internal

PRODUCT SPECIFICATION

7 (14)

Prepared (also subject responsible if other)

No.

MICMALE

2/1301-BMR 660 00+ Uen

Approved

Checked

Date

Rev

Reference

EAB/FJB/GMF (Natalie Johansson)

See § 1

2009-04-07

D

5 V/7 A Typical Characteristics

PKU 5311E PI

Start-up

Shut-down

Start-up enabled by connecting VI at:

TP1 = +25°C, VI = 53 V,

IO = 7 A load.

Top trace: output voltage (2 V/div.).

Bottom trace: input voltage (50 V/div.).

Time scale: (5 ms/div.).

Shut-down enabled by disconnecting VI at:

TP1 = +25°C, VI = 53 V,

IO = 7 A resistive load.

Top trace: output voltage (2 V/div.).

Bottom trace: input voltage (20 V/div.).

Time scale: (2 ms/div.).

Output Ripple & Noise

Output Load Transient Response

Output voltage ripple at:

TP1 = +25°C, VI = 53 V,

IO = 7 A resistive load.

Trace: output voltage (20 mV/div.).

Time scale: (2 µs/div.).

Additional Co =220uF

Output voltage response to load current step-

change (1.75 –5.25 - 1. 75 A) at:

TP1 =+25°C, VI = 53 V, Co = 690 µF

Top trace: output voltage (200 mV/div.).

Bottom trace: load current (2 A/div.).

Time scale: (0.5 ms/div.).

Output Voltage Adjust (see operating information)

Passive adjust

The resistor value for an adjusted output voltage is calculated by using

the following equations:

Output Voltage Adjust Upwards, Increase:

()

⎟⎟

⎠

⎞

⎜⎜

⎝

⎛

−

Δ

−

Δ

×

Δ

+

×

=

22

.

10

%

511

%

225

.

1

%

100

0

.

5

11

.

5

Radj

k

Ω

Example: Increase 4% =>VO = 5.2 Vdc

()

⎟⎟

⎠

⎞

⎜⎜

⎝

⎛

−

×

+

×

22

.

10

4

511

4

225

.

1

4

100

0

.

5

11

.

5

k

Ω = 404 kΩ

Active adjust

The output voltage may be adjusted using a voltage applied to the

Vadj pin. This voltage is calculated by using the following equations:

⎟⎟

⎠

⎞

⎜⎜

⎝

⎛

−

×

+

=

0

.

5

0

.

5

45

.

2

225

.

1

desired

V

Vadj

V

Example: Upwards => 5.2 V

⎟⎟

⎠

⎞

⎜⎜

⎝

⎛

−

×

+

0

.

5

0

.

5

2

.

5

45

.

2

225

.

1

V = 1.323 V

E

PKU 5000E series

DC/DC converters, Input 18-72 V, Output up to 10 A/35 W

EN/LZT 146 391 R4B May 2009

Technical Speciﬁcation

10

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