Diodes Incorporated AP6320x Synchronous Buck Converters
Diodes Inc AP6320x 2A Synchronous Buck Converters offer an ultra-low IQ solution with best-in-class EMI performance. The AP63200, AP63201, AP63203, and AP63205 feature a wide input voltage range of 3.8V to 32V and support 5V, 12V, and 24V power supplies. The devices also include an integrated 125mΩ high-side power MOSFET and a 68mΩ low-side power MOSFET to provide high-efficiency step-down DC/DC conversion.
The AP63200, AP63203, and AP63205 utilize Pulse Frequency Modulation (PFM) with an ultra-low quiescent current of 22μA, resulting in efficiencies up to 80% and 88% during light load conditions of 1mA and 5mA, respectively. The AP63203 and AP63205 offer a fixed output and optimized design for reduced Electromagnetic Interference (EMI). The AP63201 operates in Pulse Width Modulation (PWM), where the switching frequency is partially fixed regardless of the output load.
The AP6320x Converters provide a Frequency Spread Spectrum (FSS) with a switching frequency jitter of ±6%. This reduces EMI by not permitting emitted energy to stay at any frequency for a significant time. The devices achieve further EMI improvements through the proprietary gate driver scheme, which reduces switching node ringing without sacrificing MOSFET turn-on and turn-off times. The AP6320x Converters are available in a low-profile TSOT26 package.
Features
- VIN 3.8V to 32V
- 2A continuous output current
- 0.8V ± 1% reference voltage
- 22µA ultralow quiescent current
- Switching frequency
- AP63200 and AP63201 500kHz
- AP63203 and AP63205 1.1MHz
- Pulse Width Modulation (PWM) regardless of output load
- AP63201
- Supports Pulse Frequency Modulation (PFM)
- AP63200, AP63203, and AP63205
- Up to 80% efficiency at 1mA light load
- Up to 88% efficiency at 5mA light load
- Fixed output voltage
- AP63203 3.3V
- AP63205 5.0V
- Proprietary gate driver design for best EMI reduction
- Frequency Spread Spectrum (FSS) to reduce EMI
- Precision enable threshold to adjust UVLO
- Protection circuitry
- Overvoltage protection
- Cycle-by-cycle peak current limit
- Thermal shutdown
- Totally lead-free and fully RoHS compliant
- Halogen and antimony free
Applications
- 12V and 24V distributed power Bus supplies
- Flat-screen TV sets and monitors
- Power tools and laser printers
- White goods and small home appliances
- FPGA, DSP, and ASIC supplies
- Home audio
- Network systems
- Set-top boxes
- Gaming consoles
- Consumer electronics
Typical Application Circuit
Associated Board
Diodes Incorporated AP6320x Evaluation Boards
Evaluate the AP6320x 2A synchronous buck converters.
Associated Product
Diodes Incorporated DC/DC Buck Converters
Offer high efficiency, cost-effectiveness, and design flexibility housed within compact designs.
Associated Product
Diodes Incorporated DC/DC Buck Converters
Offer high efficiency, cost-effectiveness, and design flexibility housed within compact designs.