Datasheet > RA7129-BLD

RA7129-BLD

更新时间： 2023-09-24 09:24:56

品牌	Logo	应用领域
线艺 - COILCRAFT		/
页数	文件大小	规格书
2页	162K
描述
for Power over Ethernet

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数据手册

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RA7129-BLD 数据手册

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Document 1509-1

For ST PM8804

& ST PM8805

High Power PoE Transformers Reference Design

• Optimized for STMicroelectronics high-power PoE PD

controller evaluation board STEVAL-POE00xV1

• Designed to meet upcoming IEEE 802.3bt standard

• Operates at 250 kHz with 36 – 72 Volts input.

Core material Ferrite

Terminations RoHS tin-silver-copper over tin over nickel over phos

bronze. Other terminations available at additional cost.

Weight 11.5 – 13.5 g

Ambient temperature –40°C to +125°C

Max part temperature +165°C (ambient + self-heating)

Storage temperature –40°C to +165°C

Tape and reel packaging: –40°C to +80°C

Resistance to soldering heat Max three 40 second reﬂows at

+260°C, parts cooled to room temperature between cycles

Moisture Sensitivity Level (MSL) 1 (unlimited ﬂoor life at <30°C /

85% relative humidity)

Failures in Time (FIT) / Mean Time Between Failures (MTBF)

38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332

Packaging 175 per 13″ reel Plastic tape: 44 mm wide, 0.5 mm thick,

32 mm pocket spacing, 12 mm pocket depth

PCB washing Tested to MIL-STD-202 Method 215 plus an additional

aqueous wash. See Doc787_PCB_Washing.pdf.

Active Clamp Forward Transformers

Inductance

Leakage

inductance⁴

max (µH)

Part¹

number

at0A²

Isolation⁵

(Vrms)

DCR max (Ohms)

sec

Turns ratio

pri : sec : aux

(µH)

pri

aux

Output

RA7129-BLD

MA5509-CLD

134 25%

70 10%

0.0265

0.0590

0.0035

0.0028

0.174

0.300

0.180

0.838

1 :0.333 : 0.667

1 : 0.200 : 0.533

5 V, 20 A

1500

3.3 V, 20 A

Flyback Transformers

Inductance

at 3.5A³

(µH)

Leakage

Part¹

number

at0A²

(µH)

inductance⁴

max (µH)

Isolation⁵

(Vrms)

DCR max (Ohms)

Turns ratio

pri : sec :bias

pri

sec

bias

Output

NA6083-BLD

70 10%

0.111

0.006

0.66

1.820

1: 0.20 : 0.60

5 V, 20 A

1500

1. Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic

tape (175 parts per full reel). Quantities less than full reel

available: in tape (not machine ready) or with leader and

trailer ($25 charge).

2. Inductance for is for the primary, measured at 250 kHz, 0.2 Vrms, 0 Adc.

3. Minimum inductance for the primary, measured at 250 KHz, 0.2 Vrms,

3.5 Adc.

4. Leakage inductance is for the primary winding with the secondary

windings shorted.

5. Isolation (hipot) is measured for one minute: 1500Vrms from primary

and aux/bias to secondary; 500Vrms from primary to aux/bias.

6. Electrical speciﬁcations at 25°C.

Schematic

Pri

Sec

Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

Aux / Bias

Connect pin 1 to 2 and pin 3 to 4 on the PC board.

Connect pins 10, 11 and 12 together and pins

7, 8 and 9 together on the PC board

Document 1509-1 Revised 11/07/18

This product may not be used in medical or high

risk applications without prior Coilcraft approval.

Specification subject to change without notice.

Please check web site for latest information.

US +1-847-639-6400 sales@coilcraft.com

UK +44-1236-730595 sales@coilcraft-europe.com

Taiwan +886-2-2264 3646 sales@coilcraft.com.tw

China +86-21-6218 8074 sales@coilcraft.com.cn

Singapore + 65-6484 8412 sales@coilcraft.com.sg

中文翻译

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