MICROCONTROLLERS

Our new method of efficiently converting AC to DC is achieved by using a Pulsiv OSMIUM microcontroller to monitor real-time grid conditions, manage power factor correction (PFC) and regulate a high-voltage DC output to support a wide range of compatible DC-DC converters.

It maintains a flat efficiency profile over the full load range and complies with strict EMC/THD regulations. Quality, reliability, performance and availability have been addressed by combining our unique intellectual property with industry standard devices from carefully selected global tier 1 chip manufacturers.

Part Number Output Power
(Max)		 Switching
Frequency
 Active Bridge
(Optional)		 X-Cap Discharge
(Optional)		 Input Voltage
Derating Eliminated		 Package
 Product Details,
Documents & Stock
PSV-AD-65EG-Q24IV 65W 125kHz VQFN24 VIEW
PSV-AD-150-Q24IV 150W 42kHz VQFN24 VIEW
PSV-AD-250-Q24IV 250W 42kHz VQFN24 VIEW
PSV-AD-250E-Q24IV 250W 42kHz VQFN24 VIEW

FEATURES & FUNCTIONS

THE HEART OF EVERY PULSIV OSMIUM DESIGN

ACTIVE BRIDGE CONTROL

Pulsiv OSMIUM microcontrollers provide active bridge signals to drive a high-side low-side MOSFET configuration. This increases overall efficiency by up to 1.4% (90VAC line input). This is particularly useful at higher power levels and requires only two MOSFETs (see datasheet). You can implement a full active bridge with very few additional components.

X-CAP DISCHARGE

If the grid supply fails, the Pulsiv OSMIUM microcontroller will produce signals to discharge the x-capacitor automatically using low cost switches in the half active bridge. This replaces alternative and more expensive methods such as using resistors or an additional external silicon chip. An alternative passive circuit can be used instead of the half active bridge.

HOLD UP

If hold up is required, an optional circuit can be used to activate a Thyristor below a certain voltage threshold (determined by a simple resistor network) and maintain the HVDC output using hardware rather than software.

GRID FAILURE DETECTION

Pulsiv OSMIUM Microcontrollers issue a warning signal when the grid supply falls below 50V to give downstream systems the maximum time to take action. This is particularly useful in safety critical applications or where a controlled shut down is required.

SELECTABLE HVDC OUTPUT

With the ability to select the HVDC output voltage, the storage capacitor can be optimised for cost or performance. This flexibility lets you configure the design according to the needs of your application by choosing between 160V or 200V capacitors.

POWER CONSUMPTION INDICATOR

The POWER_USED pin displays real-time consumption by toggling at a fixed rate that is directly proportional to the actual delivered power. Our method does not require expensive current measurement techniques, but performs a calculation during each grid cycle.

AUX OUTPUT CONTROL

You can use the SECONDARY_PWM output to drive an auxiliary supply for systems that need power when the DC-DC converter is switched off. Please contact us for details as the supporting components will depend on specific power requirements.

SIMPLIFYING THE DESIGN PROCESS

MICROCONTROLLERS

Our new method of efficiently converting AC to DC is achieved by using a Pulsiv OSMIUM microcontroller to monitor real-time grid condition, manage power factor correction (PFC) and regulate a high-voltage DC output to support a wide range of compatible DC-DC converters.

EVALUATION BOARDS: AC TO DC FRONT-END ONLY

Pulsiv OSMIUM AC to DC front-end evaluation boards allow you to quickly evaluate our power conversion technology for any application. They support universal input and can be adapted to test various front-end reference designs. Simply connect a suitable DC-DC converter on the HVDC output to produce a complete power supply prototype.

EVALUATION BOARDS: FULL AC TO DC POWER SUPPLIES

Our full AC-DC power supply evaluation boards include a Pulsiv OSMIUM front-end design and a carefully selected DC-DC converter to demonstrate a complete end-to-end solution. They have been developed for either general purpose or industry specific applications and require no additional modifications.

REFERENCE DESIGNS: AC TO DC FRONT-END ONLY

Our AC to DC front-end reference designs include a Pulsiv OSMIUM microcontroller and support a variety of different features and power levels. Once a configuration has been selected, simply integrate a suitable DC to DC converter to produce a complete power supply design.

REFERENCE DESIGNS: FULL AC TO DC POWER SUPPLIES

Our full AC to DC reference designs deliver a complete end-to-end solution that combine a Pulsiv OSMIUM microcontroller, AC to DC front-end reference design and a carefully selected DC-DC converter. Developed for both general purpose and specific applications, they can be adopted without making any changes or further modified according to the needs of the end product.

ASSEMBLED MODULES: USB-C

Our fully assembled, ultra-compact, and EMC compliant modules based on Pulsiv OSMIUM technology using our full AC to DC power supply reference designs. Developed for rapid prototyping and to demonstrate a size optimised “Plug & Play” solution, they can be easily integrated into end products without incurring any further design, development, or manufacturing costs.