Overview
The NCP81162MNR2G, produced by ON Semiconductor, is a current balancing, 3-level PWM input phase doubler. This IC is designed to double the number of phases directly controlled by ON Semiconductor PWM controllers that have 3-level PWM output signals. It ensures effective current balance between phases even during dynamic loading by monitoring the current of two phases and allocating the next PWM pulse to the phase with the lower current.
Key Specifications
| Parameter | Units | Min | Typ | Max | Test Condition |
|---|---|---|---|---|---|
| Operating Temperature | °C | -40 | 125 | ||
| VCCA & VCCD Voltage | V | 4.75 | 5.25 | ||
| Output High Voltage (sourcing 500 μA) | V | VCCD - 0.2 | VCCD | ||
| Output Low Voltage (sinking 500 μA) | V | 0.2 | GND | ||
| Output MID-State Voltage (MID_HL = GND) | V | 1.4 | 1.6 | ||
| Output MID-State Voltage (MID_HL = VCCA) | V | 1.9 | 2.1 | ||
| PWM_IN Response Delay | ns | 15 | 50 | PWM_IN L → H or H → L | |
| CSP Input Voltage Range | V | -0.3 | 2.0 | ||
| Offset Accuracy | mV | -1.25 | 1.25 | ||
| Input Bias Current | nA | -400 | 400 | ||
| Package | 16-VFQFN Exposed Pad |
Key Features
- Works with controllers having 3-level PWM outputs
- Reproduces 3-level PWM signals to drivers
- Very short delay
- Doubles single-phase to 2-phase; multiple doublers can double N phases to 2 x N phases
- Pb-free, halogen-free/BFR-free, and RoHS compliant
- Current balancing based on feedback from phase currents
- Input under-voltage protection
- Dual-input differential current comparator
Applications
- High current multiphase applications
- Expanding the single-phase rail of a dual rail controller to 2 phases
Q & A
- What is the primary function of the NCP81162MNR2G? The NCP81162MNR2G is a phase doubler that doubles the number of phases controlled by a PWM controller, ensuring current balance between phases.
- What type of PWM signals does the NCP81162MNR2G work with? The NCP81162MNR2G works with 3-level PWM output signals from controllers.
- How does the NCP81162MNR2G maintain current balance? It monitors the current of two phases and allocates the next PWM pulse to the phase with the lower current.
- What is the operating temperature range of the NCP81162MNR2G? The operating temperature range is -40°C to 125°C.
- What is the voltage range for VCCA and VCCD? The voltage range for VCCA and VCCD is 4.75V to 5.25V.
- Is the NCP81162MNR2G RoHS compliant? Yes, the NCP81162MNR2G is Pb-free, halogen-free/BFR-free, and RoHS compliant.
- What is the package type of the NCP81162MNR2G? The package type is 16-VFQFN Exposed Pad.
- How does the NCP81162MNR2G handle under-voltage conditions? The device has input under-voltage protection.
- What is the purpose of the differential current comparator in the NCP81162MNR2G? The differential current comparator compares the instantaneous phase currents to balance them.
- Can multiple NCP81162MNR2G devices be used to increase the number of phases? Yes, multiple doublers can double N phases to 2 x N phases.
