Critical Conduction Mode Interleaved PFC Control IC
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Overview
Description
The R2A20112A controls a boost converter to provide an active power factor correction. The R2A20112A adopts critical conduction mode for power factor correction and realizes high efficiency and a low switching noise by zero current switching. Interleaving function improves ripple current on input or output capacitor by 180 degrees phase shift. Soft-star, the feedback loop short detection, two mode over-voltage-protection, over-current-protection, Over current ON/OFF timer protection for boost Diode short and slave ZCD open detection are built in the R2A20112A, and can constitute a power supply system of high reliability with few external parts.
Features
- Absolute Maximum Ratings Supply voltage Vcc: 24 V Junction temperature Tj: –40 to +150°C
- Electrical Characteristics VREF output voltage Vref: 5.0 V ± 1.5% UVLO operation start voltage Vuvlh: 10.5 V ± 0.7 V UVLO operation shutdown voltage Vuvll: 9.3 V ± 0.5 V UVLO hysteresis voltage Hysuvl: 1.2 V ± 0.5 V
- Functions Boost converter control with critical conduction mode Interleaving control Soft start function for the reference voltage of Error Amp Two mode PFC output Over-voltage-protection Mode1: Dynamic OVP corresponding to a voltage rise by dynamic load change. Mode2: Static OVP corresponding to over-voltage in stable. PFC output Dynamic-under-voltage-protection (DUVP) Feedback loop open/short detection Master and Slave independence over-current-protection 280 μs restart timer Slave ZCD signal open detection Over current ON/OFF timer protection for boost Diode short
- Package Pb-free SOP-16
Applications
Documentation
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Date | |
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| PDF 265 KB 日本語 | Datasheet | |
| PDF 5.51 MB 日本語 | Brochure | |
| PDF 4.86 MB 日本語 | Product Change Notice | |
| PDF 407 KB 日本語 | Technical Update | |
| PDF 3.74 MB 日本語 | Product Change Notice | |
| PDF 1.46 MB 日本語 | Product Change Notice | |
| PDF 1.21 MB | Application Note | |
| PDF 1.30 MB | Application Note | |
| PDF 224 KB | Application Note | |
| PDF 1.11 MB 日本語 | Application Note | |
| PDF 509 KB | Application Note | |
| PDF 397 KB | Application Note | |
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Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
| SOP | Get Samples, |
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Support
Renesas Samples
Select an orderable part number:
| Orderable Part ID | Sample |
|---|---|
| R2A20112ASP#W0 | Availability |