BQ55090ETA27 datasheet(6/13 Pages) SYNQOR | Eighth-brick DC Bus Converter

6 page

Product # BQ55090ETA27

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-2BE559C Rev. B

10/10/06

Page 6

Input:

Output:

Current:

PPackage:

ackage:

35-55 V

9.6 V

27 A

Eighth-brick

Technical S

echnical Specification

pecification

Ambient Air Temperature (

oC)

400 LFM

300 LFM

200 LFM

100 LFM

Figure 7: Maximum output power derating curves vs. ambient air tem-

perature for airflow rates of 100 LFM through 400 LFM with air flow-

ing from output to input (nominal input voltage).

Figure 8: Thermal plot of converter at 27 amp load current (250W)

with 55°C air flowing at the rate of 200 LFM. Air is flowing across the

converter from output to input (nominal input voltage).

Figure 9: Turn-on transient at full load (resistive load) (1.0 ms/div).

Input voltage pre-applied. Top Trace: Vout (2V/div). Bottom Trace:

ON/OFF input (1V/div).

Figure 10: Turn-on transient at zero load (1.0 ms/div). Top Trace: Vout

(2V/div). Bottom Trace: ON/OFF input (1V/div).

Figure 11: Output voltage response to step-change in load current (50%-75%-

50% of Iout(max); dI/dt = 0.1A/µ s). Load cap: 15µ F, 100 m

W ESR tantalum cap

and 1µ F ceramic cap. Top trace: Vout (200mV/div), Bottom trace: Iout (5A/div).

Figure 12: Test set-up diagram showing measurement points for Input

Terminal Ripple Current (Figure 13), Input Reflected Ripple Current

(Figure 14) and Output Voltage Ripple (Figure 15).

10 µH

source

impedance

DC/DC

Converter

See Fig. 14

See Fig. 13

See Fig. 15

1 µF

ceramic

capacitor

15 µF,

450mW ESR

tantalum

capacitor

47 µF,

<1W ESR

electrolytic

capacitor

VSOURCE

VOUT

Semiconductor junction temperature is

within 1°C of surface temperature

Part Number	Components Description	Html View	Manufacturer
ATC210	Dual-Input Bus Converter	1 2 3 4 5 More	Emerson Network Power
E48SB9R625	Delphi Series E48SB 240W Eighth Brick Bus Converter DC/DC Power Modules: 48Vin 9.6V/25A out	1 2 3 4 5 More	Delta Electronics, Inc.
M62332P	8-bit 2ch I2C BUS D/A Converter with Buffer Amplifiers	1 2 3 4 5 More	Renesas Technology Corp
QBWIIBC	wide-input intermediate bus converter	1 2 3 4	Emerson Network Power
EUS15-120	BUS CONVERTER	1 2 3 4 5 More	Murata Power Solutions Inc.
M62333P	8-bit 3ch I2C BUS D/A Converter with Buffer Amplifiers	1 2 3 4 5 More	Renesas Technology Corp
EUS20-120	Bus Converter	1 2 3 4 5 More	Murata Power Solutions Inc.
M62334P	8-bit 4ch I2C BUS D/A Converter with Buffer Amplifiers	1 2 3 4 5 More	Renesas Technology Corp
EUS25-096	BUS CONVERTER	1 2 3 4 5 More	Murata Power Solutions Inc.
EUS30-080	BUS CONVERTER	1 2 3 4 5 More	Murata Power Solutions Inc.

Related Electronics Part Number

Link URL

Sponsor of Alldatasheet