HV9105

The Supertex HV9105 and HV9108 are high-efficiency high voltage SMPS ICs intended for use in power converters requiring extreme efficiency at output power levels of 5.0W or less. The low supply current (0.5mA max) allows them to be used to build supplies which meet CCITT I.430 performance recommendations (60% efficiency at .025W out).

The HV9105/08 provides all the functions necessary to build a single-switch current-mode converter of any common topology, with a minimum of external parts.

In addition to high efficiency, because it uses Supertex's proprietary high voltage BiCMOS/DMOS technology, the HV9105/08 offers numerous performance advantages when compared to conventional PWM ICs. Dynamic range is approximately 8 times wider than with bipolar ICs, both response speed and maximum clock rate are faster, and no external power resistors or zeners are necessary for high voltage starting.

Accessory circuits are included in HV9105 to provide either latching or nonlatching shutdown. When shut down, device dissipation is less than 4mW.

The HV9105/08 is intended for operation with input voltages from 10 to 120VDC.