PKR2000A datasheet(7/27 Pages) ERICSSON

Part #	PKR2000A

Description	DC/DC converters, Input 18-36 V, Output up to 2 A/15 W

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Manufacturer	ERICSSON [Ericsson]

Direct Link	http://www.ericsson.com

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Ericsson Internal

PRODUCT SPECIFICATION

4 (14)

Prepared (also subject responsible if other)

No.

ESKEVIN

2/1301-BMR 640 1211+ Uen

Approved

Checked

Date

Rev

Reference

SEC/D (Julia You)

EZYPING

2007-8-20

D

3.3V, 2A / 6.6W Typical Characteristics

PKR 2610A SI

Start-up

Shut-down

Start-up enabled by connecting V

I at:

Tref = +25°C, VI = 27 V,

IO = 2 A resistive load.

Top trace: output voltage (1.0 V/div.).

Bottom trace: input voltage (10 V/div.).

Time scale: (2 ms/div.).

Shut-down enabled by disconnecting V

I at:

Tref = +25°C, VI = 27 V,

IO = 2 A resistive load.

Top trace: output voltage (1.0 V/div.).

Bottom trace: input voltage (10 V/div.).

Time scale: (2 ms/div.).

Output Ripple & Noise

Output Load Transient Response

Output voltage ripple at:

Tref = +25°C, VI = 27 V,

IO = 2 A resistive load.

Trace: output voltage (5 mV/div.).

Time scale: (2 μs/div.).

Output voltage response to load current step-

change (0.5-1.5-0.5 A) at:

Tref =+25°C, VI = 27 V.

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

Bottom trace: load current (1 A/div.).

Time scale: (0.2 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:

Rou= 3.18 x (3.9 — Vo) / ( Vo - Voi) kΩ

E.g. Increase 4% =>Vout =3.43 Vdc

3.18 x (3.9 — 3.43) / (3.43- 3.3) = 11.5 k

Ω

Output Voltage Adjust Downwards, Decrease:

Rod= 17.2 x ( Voi — Vo) / (Vo —1.7) kΩ

E.g. Decrease 2% =>Vout = 3.23 Vdc

17.2 x ( 3.3 — 3.23) / (3.23 —1.7)= 0.79 kΩ

E

PKR 2000A series

DC/DC converters, Input 18-36 V, Output up to 2 A/15 W

EN/LZT 146 352 R2C September 2007

Technical Speciﬁcation

7

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