Overview
The NCP1653ADR2, produced by onsemi, is a Power Factor Correction (PFC) boost controller designed to operate in fixed-frequency Continuous Conduction Mode (CCM). This controller is optimized for high-power applications where cost-effectiveness, reliability, and high power factor are crucial. It is available in compact 8-pin DIP or SOIC packages, minimizing the number of external components and simplifying the design of CCM PFC circuits. The NCP1653ADR2 supports both peak current-mode and average current-mode operations and can operate in either constant output voltage or follower boost modes, allowing for reduced output voltage and consequently smaller inductor and power MOSFET sizes.
Key Specifications
| Characteristics | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Switching Frequency | fSW | 90 kHz (NCP1653), 60.3 kHz (NCP1653A) | 67 kHz (NCP1653), 73.7 kHz (NCP1653A) | 102 kHz (NCP1653), 110 kHz (NCP1653A) | kHz |
| Maximum Duty Cycle (VM = 0 V) | Dmax | - | - | 94% | % |
| Gate Drive Resistor (Output High) | ROH | 5.0 | 6.6 | 9.0 | Ω |
| Gate Drive Resistor (Output Low) | ROL | 2.0 | 3.3 | 6.6 | Ω |
| Supply Voltage | VCC | 8.0 | - | 14.5 | V |
| UVLO Startup Threshold | VCC(on) | 12.25 | - | 13.25 | V |
| UVLO Hysteresis | VCC(H) | 4.0 | - | 4.55 | V |
| Operating Temperature | TJ | -40 | - | 125 | °C |
Key Features
- IEC1000-3-2 Compliant
- Continuous Conduction Mode (CCM) operation
- Average Current-Mode or Peak Current-Mode operation
- Constant Output Voltage or Follower Boost Operation
- Fixed Switching Frequency: 67 kHz (NCP1653), 100 kHz (NCP1653A)
- Very few external components required
- High safety protection features:
- Overvoltage Protection (OVP)
- Undervoltage Protection (UVP)
- Overpower Limitation (OPL)
- ±1.5 A current capability for direct driving of the MOSFET
Applications
The NCP1653ADR2 is ideal for high-power applications where cost-effectiveness, reliability, and high power factor are key parameters. It is particularly suited for:
- Power supplies requiring high efficiency and compliance with EMI standards
- Industrial power systems needing robust and compact PFC stages
- Automotive and consumer electronics requiring reliable power factor correction
- Any application benefiting from reduced component count and simplified design
Q & A
- What is the primary function of the NCP1653ADR2?
The NCP1653ADR2 is a Power Factor Correction (PFC) boost controller designed for Continuous Conduction Mode (CCM) operation.
- What are the available switching frequencies for the NCP1653ADR2?
The switching frequencies are 67 kHz for the NCP1653 and 100 kHz for the NCP1653A.
- What protection features are integrated into the NCP1653ADR2?
The controller includes Overvoltage Protection (OVP), Undervoltage Protection (UVP), and Overpower Limitation (OPL).
- What is the significance of the follower boost mode in the NCP1653ADR2?
The follower boost mode allows for the reduction of output voltage, which in turn reduces the size and cost of the inductor and power MOSFET.
- What is the current capability of the output stage of the NCP1653ADR2?
The output stage has a ±1.5 A current capability for direct driving of the MOSFET.
- What are the typical operating supply voltage and temperature range for the NCP1653ADR2?
The typical operating supply voltage is 15 V, and the operating temperature range is from -40°C to 125°C.
- Is the NCP1653ADR2 compliant with any industry standards?
Yes, it is compliant with IEC1000-3-2 standards.
- What is the package type for the NCP1653ADR2?
The controller is available in 8-pin DIP or SOIC packages.
- How does the NCP1653ADR2 simplify the design of PFC circuits?
It minimizes the number of external components required and simplifies the CCM PFC implementation.
- What are the benefits of using the NCP1653ADR2 in high-power applications?
The benefits include cost-effectiveness, reliability, high power factor, and reduced component count.
