The Pulse Electronics BM101.C series offers low-profile BMS transformers designed for integration with leading BMS Silicon ICs. These transformers are fully qualified and engineered to meet stringent IEC/UL61558 standards. Featuring a low profile height of 3.45 or 4.06mm max and high-temperature performance up to 125/150C, they are ideal for demanding applications in electric vehicles (EV), Energy Storage Systems (ESS), and marine or aviation transportation. The series includes choke-fitted options for enhanced performance and offers high isolation breakdown voltages.
| Part Number | Inductance (100kHz, 100mVrms) | Turns Ratio | Choke fitted | Isolation breakdown (Pri:Sec) | Working Voltage | Insulation | Operating Temperature | Qualified BMS Silicon | Leakage Inductance (Max) | Winding DCR () | Insertion Loss | Return Loss | CMRR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HM1236NL | 500 uH min | 1.00 +/- 2% | YES | 3200Vrms / 60sec | 600VDC | Functional | -40 to +125C MAX | MAXIM ; MAX17841B | - | - | - | - | - |
| HM1238NL | 300 uH min | 1.00 +/- 2% | YES | 4300Vrms / 60sec | 1000VDC | Functional | -40 to +150C MAX | MAXIM ; MAX17841B | - | - | - | - | - |
| HM2113ZNL | 150 uH min | 1.00 +/- 2% | YES | 4300Vrms / 60sec | 1000VDC | Functional | -40 to +125C | NXP , ADI, Infineon | 0.50 uH @ 100kHz | 0.45 max | -0.25dB max @ 4MHz | -20dB min @ 4MHz | -35dB (PHY Side) / -20dB (Line Side) |
| HM2146NL | 150 uH min | 1.00 +/- 1% | NO | 3000Vrms / 60sec | 1000VDC | Functional | -40 to +125C | Texas Instr./ NXP, ADI | 0.50 uH @ 2000kHz | 0.50 max | -0.25dB max @ 2MHz | -20dB min @ 2MHz | N/A |
| HM2147NL | 500 uH min | 1.00 +/- 2% | NO | 4300Vrms / 60sec | 1500VDC | Functional | -40 to +125C | Texas Instr.; BQ7961x-Q1 | 0.50 uH @ 2000kHz | 0.50 max | -0.25dB max @ 2MHz | -20dB min @ 2MHz | N/A |