What the charger is doing
These chargers use a high-frequency supply and a three-step profile: constant current, constant voltage, then a smaller constant current. The loads are battery-swap cabinets, pallet trucks, forklifts, lift trucks, sightseeing and golf carts, mobility vehicles, unmanned delivery vehicles, and agricultural, crop-spraying and firefighting drones.
MHCHXM uses a SiC MOSFET and a high-temperature Schottky in this class of charger. The combination is meant to run hot, conduct heat, keep loss down, and hold reliability so the charge cycle stays stable.
SiC MOSFET
| Result | In the design |
|---|---|
| Efficiency | With the loss pushed down, efficiency can pass 96% at full power. |
| Size | The higher frequency can shrink the magnetics by more than 30%. |
| Temperature | The device still delivers above 175°C. |
| Voltage | It supports an 800 V platform and the vehicle packs that use it. |
| Running cost | About 30% less loss, so the energy bill over the life of the charger is lower. |
High-temperature Schottky
A 175°C Schottky is there to hold reverse leakage and carrier mobility as the die heats up, so the part does not fade. The working window is about −40°C to 175°C.
The barrier metal and the passivation are set to ease mechanical stress and thermal runaway when the case is hot. After temperature cycling, the failure rate is lower than a conventional silicon diode, which is what long-running new-energy and industrial equipment needs.
The high-temperature Schottky line is about 30 A to 100 A and 150 V to 300 V.
Typical topology
Selection
SiC MOSFET
| Part | VDS (V) | RDS(on) (mΩ) | Package |
|---|---|---|---|
| HXMC65N100P3 | 650 | 100 | TO-247AB |
| HXMC65N90P1 | 650 | 90 | TO-247AB |
| HXMC65N70P1 | 650 | 70 | TO-247AB |
| HXMC65N20P1 | 650 | 20 | TO-247AB |
| HXMC80N90P1 | 800 | 90 | TO-247AB |
| HXMC80N70P1 | 800 | 70 | TO-247AB |
| HXMC80N20P1 | 800 | 20 | TO-247AB |
SiC diode
| Part | VRRM (V) | IF (A) | VF (V) | Package |
|---|---|---|---|---|
| ECR1065A | 650 | 10 | 1.5 | TO-220AC |
| ECR1565A | 650 | 15 | 1.55 | TO-220AC |
| ECR2065A | 650 | 20 | 1.5 | TO-220AC |
| ECR3065A | 650 | 30 | 1.55 | TO-220AC |
| ECR4065A | 650 | 40 | 1.5 | TO-220AC |
| ECRP2065A | 650 | 20 | 1.5 | TO-247AC |
| ECRP3065A | 650 | 30 | 1.55 | TO-247AC |
| ECRP4065A | 650 | 40 | 1.5 | TO-247AC |
| ECR2065PT | 650 | 20 | 1.5 | TO-247AB |
| ECR3065PT | 650 | 30 | 1.55 | TO-247AB |
| ECR4065PT | 650 | 40 | 1.5 | TO-247AB |
High-temperature Schottky
| Part | VRRM (V) | IF (A) | VF (V) | Package | Type |
|---|---|---|---|---|---|
| MBR60H200CT | 200 | 60 | 0.95 | TO-220AB | Standard high-Tj |
| MBR60H200CD | 200 | 60 | 0.95 | TO-263-2L | Standard high-Tj |
| MBR60H200PT | 200 | 60 | 0.95 | TO-247AB | Standard high-Tj |
| MBR80H200PT | 200 | 80 | 0.96 | TO-247AB | Standard high-Tj |
| MBR100H200PT | 200 | 100 | 0.9 | TO-247AB | Standard high-Tj |
| MBR40H250PT | 250 | 40 | 0.9 | TO-247AB | Standard high-Tj |
| MBR60H250PT | 250 | 60 | 0.95 | TO-247AB | Standard high-Tj |
| MBR80H250PT | 250 | 80 | 0.95 | TO-247AB | Standard high-Tj |
| MBR60H300PT | 300 | 60 | 0.95 | TO-247AB | Standard high-Tj |
| MBR80H300PT | 300 | 80 | 0.98 | TO-247AB | Standard high-Tj |
| MBR100H300PT | 300 | 100 | 1 | TO-247AB | Standard high-Tj |
| EBR30LH150PT | 150 | 30 | 0.9 | TO-247AB | Low-VF high-Tj |
| EBR40LH150PT | 150 | 40 | 0.92 | TO-247AB | Low-VF high-Tj |
| EBR30LH200PT | 200 | 30 | 0.93 | TO-247AB | Low-VF high-Tj |
| EBR40LH200PT | 200 | 40 | 0.92 | TO-247AB | Low-VF high-Tj |
| EBR40VH200PT | 200 | 40 | 0.91 | TO-247AB | Low-VF high-Tj |
| EBR60LH200PT | 200 | 60 | 0.98 | TO-247AB | Low-VF high-Tj |
| EBR30LH300PT | 300 | 30 | 1.1 | TO-247AB | Low-VF high-Tj |
| EBR40LH300PT | 300 | 40 | 1 | TO-247AB | Low-VF high-Tj |
| EBR60LH300PT | 300 | 60 | 0.95 | TO-247AB | Low-VF high-Tj |
Fast-recovery diode
| Part | VRRM (V) | IF (A) | trr (ns) | VF (V) | Package |
|---|---|---|---|---|---|
| SFP3006A | 600 | 30 | 50 | 1.55 | TO-247AC |
| SFP3004 | 400 | 30 | 35 | 1.5 | TO-247AB |
| SFP3006 | 600 | 30 | 35 | 1.7 | TO-247AB |
| SFP6003 | 300 | 60 | 50 | 1.15 | TO-247AB |
| SFP6004 | 400 | 60 | 50 | 1.4 | TO-247AB |
| SFP6006 | 600 | 60 | 50 | 1.6 | TO-247AB |
| SFP30H06A | 600 | 30 | 40 | 2.3 | TO-247AC |
Beyond the parts above, the MHCHXM lineup also includes SiC diodes, SiC MOSFETs, MOSFETs, Schottky diodes, fast-recovery diodes, rectifier diodes and power transistors. The portfolio is refreshed on a regular cadence.
Samples and selection
Request datasheets or catalog samples via the sample / inquiry channel. Browse the product catalog or cross-reference tool.