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Renesas R2A20132SP#W0
- Part No.:
- R2A20132SP#W0
- Manufacturer:
- Renesas
- Category:
- PFC (Power Factor Correction)
- Package:
- 20-SOIC (0.216", 5.50mm Width)
- Datasheet:
-
R2A20132SP#W0.pdf
- Description:
- IC PFC CTRLR CRM 20SOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,293
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Product details
Overview
R2A20132SP#W0 from Renesas Electronics is a Critical Conduction Mode (CrCM) Interleaved Power Factor Correction (PFC) controller IC designed to drive two boost converters in master-slave configuration. It delivers 5.0 V ±1.5% reference voltage, operates with UVLO turn-on at 10.5 V ±0.7 V, supports 180° phase interleaving, and integrates dual OVP, dynamic UVP, ZCD open detection, and slave-drop functionality for high-efficiency AC-DC front-end power supplies in industrial SMPS.
For engineers reviewing the R2A20132SP#W0 datasheet, R2A20132SP#W0 pinout, R2A20132SP#W0 application, or R2A20132SP#W0 equivalent, key selection considerations include CrCM interleaving capability, dual OCP per channel, 140 μs restart timer, SOP-20 package compatibility, and support for 100/200 V line-selectable slave drop thresholds.
Technical Context
The R2A20132SP#W0 implements a dual-channel CrCM PFC control architecture with independent zero-current detection (ZCD-M/ZCD-S), master/slave gate drivers (GD-M/GD-S), and phase-shifted interleaving via internal timing logic achieving 160–200° phase delay. Its error amplifier features 2.500 V ±0.038 V feedback threshold and transconductance of 100–270 μS.
It embeds multiple protection layers: double OVP (OVP2 + dynamic OVP1), dynamic under-voltage protection (DUVP), brownout detection (1.40 V ±0.07 V threshold), ACDET output for AC hi-voltage sensing, and dedicated open-circuit detection for FB(–) and ZCD inputs - all enabling robust single-chip PFC system implementation with minimal external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VREF Output | 5.000 V ±1.5% - stable reference for feedback and internal circuitry |
| UVLO Turn-on | 10.5 V ±0.7 V - ensures reliable startup above brownout threshold |
| Interleaving Phase | 160–200° - reduces input/output ripple current by 180° phase shift |
| OCP Threshold | 0.31 V ±0.03 V - precise overcurrent detection per channel (OCP-M/OCP-S) |
| Restart Timer | 140 μs typical - controlled recovery after fault without external RC network |
| Gate Drive Rise/Fall | 30–100 ns / 5–30 ns - fast switching transitions for low-loss MOSFET driving |
| ZCD Low Threshold | 1.40 V ±0.25 V - accurate zero-current crossing detection for CrCM operation |
| Dynamic OVP Gain | ×1.050 - OVP1 triggers at 5% above FB(+) setpoint for adaptive line-voltage protection |
Pinout & Package
Packaged in Pb-free SOP-20 (FP-20DAV, JEITA PRSP0020DD-B), the R2A20132SP#W0 uses a 12.6 mm × 7.5 mm surface-mount footprint with 1.27 mm pitch and Ni/Pd/Au-plated terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ZCD-M) | Master ZCD Input | Detects zero-current crossing of master boost inductor for CrCM timing |
| 2 (ZCD-S) | Slave ZCD Input | Detects zero-current crossing of slave boost inductor with independent timing |
| 4 (VREF) | Reference Output | 5 V ±1.5% supply for external resistive dividers and biasing |
| 10 (COMP) | Error Amp Output | Drives ramp generator and modulates on-time based on feedback error |
| 11 (FB(–)) | Inverting Input | Connects to output voltage divider; 2.500 V ±0.038 V regulation target |
| 12 (OVP2) | Dedicated OVP Input | Fixed 2.685 V ±0.05 V threshold for secondary overvoltage monitoring |
| 14 (OTC) | Off-Time Control | Reduces switching loss at light load by extending off-time dynamically |
| 15–16 (OCP-S/M) | Current Sense Inputs | Independent 0.31 V ±0.03 V thresholds per channel for cycle-by-cycle protection |
| 17/19 (GD-S/GD-M) | Gate Drivers | Push-pull outputs driving external MOSFET gates with <100 ns rise/fall |
| 20 (VCC) | Supply Input | Operates from 10.5–24 V; includes UVLO hysteresis of 1.2 V ±0.5 V |
Key Features
| Feature | Design Value |
|---|---|
| Interleaved CrCM Control | Enables two-phase boost operation with 180° phase shift to halve input capacitor RMS current |
| Slave Drop Function | Disables slave channel below selectable line-voltage thresholds (100 V/200 V) to improve light-load efficiency |
| Dual Independent OCP | Separate OCP-M and OCP-S inputs allow per-channel current limiting without shared sensing |
| Dynamic UVP & Double OVP | DUVP tracks FB(+) ×0.92 and OVP2 provides fixed 2.685 V threshold for redundant overvoltage coverage |
| ZCD Open Detection | Monitors ZCD-M/ZCD-S continuity; asserts fault if signal remains inactive >100 ms during 10 kHz switching |
| AC Hi-Voltage Detection | ACDET pin outputs open-drain signal when BO pin exceeds 3.6 V, indicating AC line surge condition |
Applications
| Industrial AC-DC Power Supplies | Server & Telecom Rectifiers |
|---|---|
Use Scenario: 1–3 kW front-end PFC stage in programmable logic controller (PLC) power modules requiring >98% efficiency and EN 61000-3-2 compliance. IC Role / Device Role / Timing Role: Dual-channel CrCM PFC controller managing interleaved boost stages with real-time ZCD synchronization and slave-drop optimization. Use Value: Reduces EMI filter size by 40% via interleaved ripple cancellation and enables >96% efficiency at 20% load using SD function. | Use Scenario: High-density 48 V intermediate bus converter in cloud data center rack power systems with strict thermal and THD requirements. IC Role / Device Role / Timing Role: Master-slave PFC controller delivering tightly regulated 385 V DC bus with dynamic OVP and DUVP for transient line resilience. Use Value: Achieves <5% THD across 90–264 VAC input range and sustains operation during brownout events down to 9.3 V VCC. |
| Medical Equipment Power Modules | LED Streetlight Drivers |
Use Scenario: Safety-certified auxiliary power supply for diagnostic imaging equipment where continuous reliability and fault logging are mandatory. IC Role / Device Role / Timing Role: Fault-tolerant PFC controller with FB(–) open detection, ZCD open detection, and 140 μs restart timer for fail-safe recovery. Use Value: Eliminates need for external watchdog or supervisor IC by integrating six independent protection mechanisms in one SOP-20 package. | Use Scenario: Outdoor-rated 150 W LED driver operating in wide ambient temperature range (–40°C to +85°C) with high line-voltage immunity. IC Role / Device Role / Timing Role: Interleaved PFC controller supporting 200 V line-selectable slave drop and ACDET-based surge response. Use Value: Maintains >92% efficiency at 10% load and survives 300 VAC surges via ACDET-triggered shutdown and double OVP redundancy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar critical conduction mode PFC controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC28070PW | Fixed-frequency average-current-mode controller; no CrCM or ZCD inputs; requires external slope compensation | Lacks interleaving, slave-drop, and ZCD open detection; suited for lower-cost non-interleaved designs | Select only if CrCM operation and ZCD-based timing are not required; verify external component count increase |
| FAN9612M | Single-channel CrCM PFC controller; no slave channel, no interleaving, no SD function; smaller SOIC-16 package | Supports only one boost stage; cannot achieve ripple reduction or light-load efficiency gains of dual-channel topology | Choose only for space-constrained single-phase PFC; R2A20132SP#W0 offers 30% lower input capacitor stress via interleaving |
Compared with UCC28070PW and FAN9612M, the R2A20132SP#W0 uniquely combines dual-channel CrCM control, hardware-based interleaving, and integrated slave-drop logic - enabling higher power density, lower EMI, and superior light-load efficiency in 1–3 kW industrial PFC designs without adding external timing or sequencing circuitry.
Availability
R2A20132SP#W0 is available at Aetrix Electronics and suitable for industrial AC-DC power supplies, server rectifier front-ends, and medical auxiliary power modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for R2A20132SP#W0 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.
The R2A20132SP#W0 belongs to Renesas' high-efficiency PFC controller product line, engineered specifically for CrCM interleaved boost topologies in industrial-grade AC-DC conversion systems demanding reliability, low EMI, and adaptive protection.
FAQ
What is the primary operating mode of the R2A20132SP#W0?
The R2A20132SP#W0 operates exclusively in Critical Conduction Mode (CrCM), using zero-current detection (ZCD-M/ZCD-S) to trigger each switching cycle at inductor current zero-crossing. This eliminates hard-switching losses and enables high efficiency and low EMI. It does not support discontinuous or continuous conduction modes - CrCM is its defined and verified operational method per the datasheet block diagram and electrical characteristics.
How does the R2A20132SP#W0 implement interleaving between master and slave channels?
The R2A20132SP#W0 achieves interleaving through internal phase-delay logic that shifts the slave channel's switching timing by 160–200° relative to the master, as confirmed in the Electrical Characteristics table on Page 6. This is implemented without external clock synchronization - the phase relationship is fixed and inherent to the IC's dual-channel CrCM architecture, directly reducing input capacitor ripple current by up to 70% compared to single-phase operation.
What protection functions are integrated into the R2A20132SP#W0?
The R2A20132SP#W0 integrates eight confirmed protections: (1) UVLO with 1.2 V hysteresis, (2) dual OVP (OVP2 + dynamic OVP1), (3) dynamic UVP (DUVP), (4) brownout detection, (5) ACDET-based AC surge detection, (6) FB(–) open detection, (7) ZCD-M/ZCD-S open detection, and (8) independent master/slave OCP. All are hardware-implemented with specified thresholds and response times - no external components required for basic fault coverage.
Can the R2A20132SP#W0 operate with only one boost converter?
Yes - the R2A20132SP#W0 supports single-channel operation by grounding SD1 and SD2 to disable the slave channel, leaving only GD-M active. In this mode, it functions as a standard CrCM PFC controller with full protection features (OCP-M, ZCD-M, OVP2, etc.) retained. The datasheet confirms slave-drop behavior is configurable, and GD-S output is automatically disabled when SD pins indicate light-load conditions.
What is the purpose of the ACDET pin on the R2A20132SP#W0?
ACDET is an open-drain output that asserts low when the BO pin voltage exceeds 3.6 V, signaling detection of an AC line overvoltage event (e.g., lightning-induced surge). It is not a sensing input but a status flag derived from internal BO comparator hysteresis - used to trigger external crowbar circuits or system-level shutdown. Its 0.4 V typical output low voltage and 2 μA max sink current are specified in the Electrical Characteristics table.
R2A20132SP#W0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 20-SOIC (0.216", 5.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Mode:
- Critical Conduction (CRM)
- Frequency - Switching:
- -
- Current - Startup:
- -
- Voltage - Supply:
- 24V
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOP
R2A20132SP#W0 FAQ
1.How can I place an order for R2A20132SP#W0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R2A20132SP#W0 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for R2A20132SP#W0 reliable?
The price and inventory of R2A20132SP#W0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R2A20132SP#W0 is usually 5 days.
3.What payment methods are accepted for R2A20132SP#W0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R2A20132SP#W0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R2A20132SP#W0?
R2A20132SP#W0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R2A20132SP#W0 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for R2A20132SP#W0?
For technical support, including R2A20132SP#W0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R2A20132SP#W0 requirements.
6.How does Aetrix verify that R2A20132SP#W0 is sourced from the original manufacturer or authorized distributors?
All R2A20132SP#W0 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that R2A20132SP#W0 meets industry standards.
7.What is the process for return or replacement of R2A20132SP#W0?
All R2A20132SP#W0 units undergo pre-shipment inspection (PSI). If there is an issue with R2A20132SP#W0, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The R2A20132SP#W0 part is unused and in its original packaging.
Return procedure for R2A20132SP#W0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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