Product Info
OpenVReg stands for Open Voltage Regulator. OpenVReg standardizes the package, pinout, and functionality for low voltage DC-DC switching regulators.
The goal of OpenVReg is enable drop in compatibility of compatible parts in a variety of form factor designs. This reduces cost, design, qualification and supply risk.
OpenVReg enables packaging and pinout compatibility across multiple sources of similar devices with a single common PCB footprint and layout. OpenVReg defines the basic operation, the minimum set of features, the electrical interface and the mechanical requirements necessary to implement compliant devices.
OpenVReg compliant devices have:
- Non-conflicting pinout definitions: additional features are allowed but do not conflict with the base feature set.
- Circuit compatibility: devices function within the predefined reference circuit.
- Common layout: devices are footprint compatible.
- Mechanically compatible package: devices do not exceed the volume defined in the mechanical specification.
The current OpenVReg development focuses exclusively on DC-DC regulators and controllers. Future version may add definition for other types of devices. The current OpenVReg regulator types are Type 0, Type 2, Type2+1, Console, and Type 4.
OpenVReg Family Tree Diagram
Type 0
OpenVReg Type 0 is a step down DC-DC converter with integrated power stage.
Type 0 defines three subtypes targeting different applications:
| Type0 SubType | Input Voltage (V) | Application | note |
| Type 0-LV | 1.2 ~5.5 | Secondary converters in two stage architectures and battery operated devices | fixed input |
| Type 0-DT | 12V | Generic desktop and consumer electronics | fixed input |
| Type 0-BT | 7-20V | Battery operated devices with 3 or more cells battery packs | dynamic input |
Note: Regulators must be stable with either polymer or MLCC input and output capacitor.
Type 2
OpenVReg Type 2 is a dual phase DC-DC controller. Type 2 defines two subtypes targeting different applications:
| Type 2 SubType | Input Voltage (V) | Application | note |
| Type 2-DT | 12V | Generic desktop and consumer electronics | fixed input |
| Type 2-BT | 7-20V | Battery operated devices with 3 or more cells battery packs | dynamic input |
Type 2+1
OpenVReg Type 2+1 is a multi-phase PWM buck switching regulator controller with two integrated gate drivers and an external gate driver to provide the third phase PWM signal output. OpenVReg Type 2+1 is programmable for 1-, 2-, or 3-phase operation. Two subtypes are defined targeting different applications:
| Type 2+1 SubType | Input Voltage (V) | Application | note |
| Type 2+1-DT | 12V | Generic desktop and consumer electronics | fixed input |
| Type 2+1-BT | 7-20V | Battery operated devices with 3 or more cells battery packs | dynamic input |
Type 4
OpenVReg Type 4 is a four phase DC/DC controller. Devices use a mass manufacturing friendly
and space saving 32-pin 0.5mm pitch 5x5mm QFN package. Type 4 is a PWM controller with a nominal VCC of 5V. As such, the maximum power input voltage is determined by the capability of the external drivers and FETs. Therefore, there are no DT or BT subtypes designed for OpenVReg Type 4.
Console
OpenVReg Console is an interface for the PWMVID communication protocol with/without inte- grated LDO and tri-state buffer to provide multiple dynamic reference voltage output. OpenVReg Console is programmable through GPIO. Devices use a mass manufacturing friendly and space saving 8-pin 0.65mm pitch 3x3mm TSOT23-8L package.
Contact
For questions or legal information please contact OpenVReg@nvidia.com.