PWM Driver Interface for Sinusoidal and Push-Pull Signals

PDI-A15-5V1A: Programmable PWM Driver Interface

The PDI-A15-5V1A is a programmable PWM driver interface designed for dual-channel signal generation. Its output signal configuration can be programmed as push-pull, inverted or sinusoidal, depending on the requirements of the target application.

For push-pull and inverted output configurations, the device supports a frequency range from 100 Hz to 1 MHz and a duty cycle range from 0% to 100%. For sinusoidal output operation, the frequency range is 1 Hz to 250 kHz, with a duty cycle range from 0% to 120%.

The device is intended for applications where signal timing, duty cycle control and configurable output behavior are important. It provides 0.1 Hz frequency resolution and 0.1% duty cycle resolution, allowing the output parameters to be adjusted with fine control.

Output Structure and Driver Capability

The PDI-A15-5V1A operates with a 5 V supply voltage. Its signal outputs provide a 5 V high-level output and support up to 1.5 A maximum instantaneous push-pull current capability.

Both outputs are designed as low-side drivers. This structure provides flexibility when connecting the device to isolated half-bridge or full-bridge driver configurations.

Key Features

• Push-pull, inverted and sinusoidal signal output

• Frequency range: 1 Hz to 1 MHz, depending on the selected output mode

• Duty cycle range: 0% to 120%, depending on the selected output mode

• Frequency resolution: 0.1 Hz

• Duty cycle resolution: 0.1%

• Programmable frequency and duty cycle transitions

• Transition functions: ramp, sinusoidal, exponential and logarithmic

• Programmable transition time: 0 to 600 s

• 1.5 A maximum instantaneous current capability

• Limitable signal parameters

• Programmable device startup routine

• SPI communication up to 20 MHz

• Selectable SPI logic levels from 1.8 V to 5 V

Conclusion

The PDI-A15-5V1A provides a configurable signal generation structure for applications that require push-pull, inverted or sinusoidal PWM outputs. With programmable frequency, duty cycle and transition parameters, it can be used as a practical driver interface in systems where precise signal control and flexible output configuration are required.