Aligning with the rapid adoption of third-gen semiconductors and the push for higher power densities, Chipown has officially launched its second-generation SiC isolated driver chip, the PN7905. Engineered for high-voltage, high-frequency applications—including PV inverters, energy storage converters, DC charging stations, EV OBCs, and AIDC power systems—the chip features 20V input-side and 36V output-side voltage ratings, while integrating a configurable up to 23A parallel drive architecture alongside robust multi-layered safety protections.
As the direct successor to the first-gen PN7903, the PN7905 directly targets and resolves challenges like insufficient drive margin, false turn-ons, and stress imbalances that occur in high-voltage, high-speed switching environments with heavy EMI. It grants system engineers extensive flexibility to balance switching losses, EMI compliance, and device reliability, driving China’s new energy and fast-charging sectors toward peak efficiency and dependability.
The PN7905 shines through its architectural design and noise immunity. Housed in an SOP8(W) package meeting 5700Vrms isolation standards, it supports 3.3V–15V input supplies, while its 36V output rating accommodates standard positive and negative gate drive requirements for SiC MOSFETs.
The chip introduces an innovative configurable stage with an 8A primary and 15A secondary path, enabling up to 23A of parallel output. Developers can dynamically toggle drive modes via I/O pins to manage high-capacitance power devices at high speeds or meet strict EMI constraints.
To prevent leg shoot-through in high-frequency circuits, it includes active Miller clamping and boasts an exceptional 200V/ns common-mode transient immunity (CMTI). Paired with a sub-110ns propagation delay (leveraging 400MHz carrier OOK modulation), it effortlessly pairs with SiC topologies exceeding 300kHz, cutting down peripheral suppression circuit design overhead. Furthermore, a complete protection matrix featuring UVLO, active pull-down, short-circuit clamping, and active shut-off establishes a firm hardware safety net under demanding conditions.
By combining wide supply tolerances, configurable high-current output, extreme noise immunity, and comprehensive fault diagnostics, Chipown’s PN7905 delivers a turnkey, highly integrated isolated gate drive solution for renewable energy, storage, and automotive high-voltage power designs. This homegrown silicon balances formidable drive capabilities, noise resilience, and smart protection, removing peripheral design hurdles for manufacturers adopting SiC and shortening product validation timelines. Moving forward, as this chip family scales into mass production and domestic substitution accelerates, portable fast-charging and new energy power architectures are set for another performance leap.
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