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Diodes Incorporated AP63203 | Demoboard AP63203WU-EVM
32V, 2A, Synchronous DC/DC Buck Converter with Enhanced EMI Reduction
Overview
| Topology | Buck Converter |
| Input voltage | 3.8-32 V |
| Switching frequency | 1100 kHz |
| Output 1 | 3.3 V / 2 A |
| IC revision | 1 |
Description
The AP63203 is a 2A, synchronous buck converter with a wide input voltage range of 3.8V to 32V and fully integrates a 125mΩ high-side power MOSFET and a 68mΩ low-side power MOSFET to provide high-efficiency step-down DC/DC conversion. The AP63203 device is easily used by minimizing the external component count due to its adoption of peak current mode control along with its integrated compensation network. The AP63203 is fixed output buck converters with Electromagnetic Interference (EMI) reduction. The converter features Frequency Spread Spectrum (FSS) with a switching frequency jitter of ±6%, which reduces EMI by not allowing emitted energy to stay in any one frequency for a significant period of time. It also has a proprietary gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off times, which further reduces high-frequency radiated EMI noise caused by MOSFET switching. The device is 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 (Pulse Frequency Modulation)
- 1.1MHz Switching Frequency
- Supports Pulse Frequency Modulation (PFM) and Pulse Width Modulation (PWM)
- Proprietary Gate Driver Design for Best EMI Reduction
- Frequency Spread Spectrum (FSS) to Reduce EMI
- Low-Dropout (LDO) Mode
- Precision Enable Threshold to Adjust UVLO
- Protection Circuitry
- Undervoltage Lockout (UVLO)
- Cycle-by-Cycle Peak Current Limit
- Thermal Shutdown
Typical applications
- Power Tools and Laser Printers /
- 12V and 24V Distributed Power Bus Supplies / FPGA, DSP, and ASIC Supplies
- Flat Screen TV Sets and Monitors
- White Goods and Small Home Appliances / Home Audio / Set Top Boxes / Gaming Consoles / Consumer Electronics
- Network Systems
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | L(µH) | IRP,40K(A) | ISAT,30%(A) | RDC typ.(mΩ) | RDC max.(mΩ) | fres(MHz) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 100 V(DC), 100 pF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 100 V(DC) | Capacitance100 pF | Capacitance±10% | Rated Voltage100 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 100 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance100 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor3 % | Insulation Resistance5 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | |||||
 | WE-XHMI SMT Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-XHMI SMT Power Inductor | – | – | – | Size6060 | Operating Temperature -40 °C up to +125 °C | – | – | – | Length6.65 mm | Width6.45 mm | Height6.1 mm | – | – | Inductance6.8 µH | Performance Rated Current8.1 A | Saturation Current @ 30%11.3 A | DC Resistance17.6 mΩ | DC Resistance19.36 mΩ | Self Resonant Frequency22 MHz | MountSMT |