Critical Conduction Mode Interleaved PFC Controller
Description
Preliminary Data Sheet
R2A20112ASP
R03DS0047EJ0201
Critical Conduction Mode Interleaved PFC Control IC
Rev.
2.
01 Jan 08, 2016
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
Ordering Information
Part No.
R2A20112ASPW0
Package Name FP-16DAV
Package Code PRSP0016DH-B
Package Abbreviation SP
Taping Abbreviation (Quantity)
W (2,000 pcs/reel)
R03DS0047EJ0201 Rev.
2.
01 Jan 08, 2016
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R2A20112ASP
Pin Arrangement...
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