BMS signal transformer

standard

OCL: 150 µ h min to 450 µ h Max

Leakage inductance: 0.5 µ H (max.)

DCR

Transformer side: 0.45 Ω (maximum)

Common mode choke side: 0.85 Ω (maximum)

Turns ratio: 1:1 ± 2%

Insertion loss: – 0.25dB (maximum, 4MHz)

Return loss: – 22dB (minimum, 4MHz)

Crosstalk: – 50dB (minimum, 4MHz)

Common mode rejection ratio: – 35dB (minimum, 1MHz to 200MHz)

Withstand voltage: 4300vdc or 3100vac

Design and construction: functional insulation

Humidity sensitivity level: Level 1

Description

BMS signal transformer

BMS signal transformer

BMS signal transformer

includes two models (sm91501al and sm91502al). Sm91501al device is a dual channel isolation transformer module with 1600vdc working voltage, while sm91502al element is a single channel isolation transformer module with 1000VDC working voltage. Both models include common mode choke for noise suppression (for BMS applications), and use ltc6804-1 / 6811 of analog device and mc33771 / 33772 of NXP for reference design. Both models have 4300vdc withstand isolation voltage and – 40 ° C to + 125 ° C extended operating temperature range. These isolation transformers comply with aec-q200 standard and ROHS directive.

Support serial daisy chain / isospi

Ltc6804-1 / 6811 of analog device and mc33771 / 33772 of NXP are used for reference design

Operating temperature range: − 40 ° C to + 125 ° C

Withstand voltage isolation voltage: 4300vdc

Comply with aec-q200 standard

RoHS compliant

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