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Renesas R2A20133ESP#W0
- Part No.:
- R2A20133ESP#W0
- Manufacturer:
- Renesas
- Category:
- PFC (Power Factor Correction)
- Package:
- -
- Datasheet:
-
R2A20133ESP#W0.pdf
- Description:
- POWER FACTOR CORRECTION
- Quantity:
- Payment:
- Shipping:
Inventory:25,000
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Product details
Overview
R2A20133ESP#W0 from Renesas Electronics is a Critical Conduction Mode (CRM) Power Factor Correction (PFC) control IC designed to drive external MOSFETs in boost-type PFC stages. It delivers 99% power factor correction, operates with zero-current switching for low EMI, integrates dual-mode overvoltage protection (dynamic and static), and eliminates need for auxiliary winding via GND-referenced ZCD. It targets AC-DC front-end supplies in industrial LED drivers and server PSUs.
For engineers reviewing the R2A20133ESP#W0 datasheet, R2A20133ESP#W0 pinout, R2A20133ESP#W0 application, or R2A20133ESP#W0 equivalent, key selection criteria include its adjustable ZCD delay (0.87 μs typ), integrated OVP2 pin for independent output voltage monitoring, UVLO hysteresis of 1.0 V ± 0.4 V, and SOP-8 package compatibility with high-density board layouts.
Technical Context
The R2A20133ESP#W0 implements CRM control using internal ramp generation synchronized to zero-current detection on the CS pin, enabling boundary-mode operation without auxiliary winding. Its error amplifier features 2.510 V feedback reference with ±80 ppm/°C stability and transconductance of 46 μS, supporting precise DC bus regulation.
Protection architecture includes three independent overvoltage paths: dynamic OVP (Vfb × 1.04), static OVP (Vfb × 1.09), and dedicated OVP2 pin (Vfb × 1.20), plus FB low-detect (0.3 V threshold), CS open detection (72.5 mV typ), and –0.6 V OCP threshold - all implemented in hardware without external comparators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Control Mode | Critical Conduction Mode (CRM) with zero-current switching - enables high efficiency (>95%) and low EMI in boost PFC without auxiliary winding. |
| UVLO Threshold | 9.5 V ± 0.7 V turn-on / 8.5 V ± 0.4 V turn-off - ensures reliable startup and brownout recovery in 12 V bias rail systems. |
| OVP2 Input Range | Dedicated OVP2 pin accepts 0.1–0.3 V low threshold and Vfb × 1.18–1.22 high threshold - allows direct sensing of 390 V DC bus via resistor divider without level-shifting. |
| ZCD Delay | Adjustable 0.87 μs typical delay (via RT pin) - compensates for MOSFET turn-off propagation delay and prevents false triggering during current ringing. |
| Max Switching Frequency | 500 kHz maximum (RT = 200 kΩ) - supports compact magnetics design while maintaining CRM stability across line/load variations. |
| Output Drive | 11.8 V high / 0.08 V low at 20 mA sink - directly drives standard 5 V logic-level MOSFET gates without buffer stage. |
| Thermal Rating | Junction temperature range –40°C to +150°C - qualified for industrial ambient (–40°C to +125°C) and high-power density applications. |
Pinout & Package
Packaged in Pb-free SOP-8 (JEDEC PRSP0008DJ-A), 3.94 mm × 4.93 mm footprint, 1.27 mm pitch, with Ni/Pd/Au plating and 0.073 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB (Pin 1) | Error amplifier inverting input | Connects to voltage divider from PFC output - sets regulated DC bus voltage (e.g., 390 V) via 2.510 V internal reference. |
| RT (Pin 2) | Timing resistor connection | Sets ZCD delay, max ON-time, and frequency limit - 200 kΩ yields 500 kHz max and 0.87 μs ZCD delay. |
| COMP (Pin 3) | Error amplifier output | Provides compensated loop signal to PWM comparator - requires external RC network for stability per application. |
| OVP2 (Pin 4) | Dedicated overvoltage sense | Independent monitoring of PFC output - triggers shutdown if voltage exceeds Vfb × 1.20, bypassing main FB path. |
| CS (Pin 5) | Current sense input | Accepts shunt or transformer-coupled current signal - detects zero-crossing and overcurrent at –0.6 V threshold. |
| GND (Pin 6) | Power and signal reference | Common return for CS, OUT, and internal circuits - must be low-inductance connection to minimize noise coupling. |
| OUT (Pin 7) | MOSFET gate driver output | Push-pull driver capable of 20 mA sink/–20 mA source - directly interfaces with N-channel MOSFET gate. |
| VCC (Pin 8) | Supply input | Operates from 9.5–24 V - powers internal circuitry and gate driver; includes UVLO with 1.0 V hysteresis. |
Key Features
| Feature | Design Value |
|---|---|
| No auxiliary winding required | ZCD uses GND-referenced current sensing - eliminates auxiliary winding, reduces transformer complexity and cost. |
| Dual-mode OVP | Dynamic OVP (load-step response) + Static OVP (steady-state drift) - prevents false trips during transient load changes. |
| Integrated OVP2 pin | Independent high-accuracy OVP path referenced to FB - enables redundant protection without additional ICs or comparators. |
| CS open-circuit detection | 72.5 mV threshold on CS pin - detects broken sense resistor or transformer winding failure before catastrophic overcurrent. |
| Adjustable frequency limiter | Configurable via RT pin - caps max switching frequency to prevent core saturation under light-load CRM conditions. |
Applications
| Industrial LED Drivers | Server AC-DC Power Supplies |
|---|---|
|
Use Scenario: 300–500 W constant-current LED driver operating from universal AC input (90–264 VAC). IC Role / Device Role / Timing Role: CRM PFC controller regulating 390 V DC bus, synchronizing MOSFET switching to inductor current zero-crossing. Use Value: Achieves >0.99 PF and <10% THD without auxiliary winding, reducing BOM count by 2 components versus traditional CrCM controllers. |
Use Scenario: 1 kW redundant PSU in datacenter rack with strict EN 61000-3-2 Class C harmonic limits. IC Role / Device Role / Timing Role: Primary PFC stage controller enforcing boundary conduction mode with dynamic OVP for rapid load-step response. Use Value: Dual OVP modes prevent nuisance shutdown during 50% load steps while maintaining 390 V ±1% regulation tolerance. |
| Medical Imaging Power Modules | Industrial Motor Drives |
|
Use Scenario: X-ray generator front-end supply requiring high reliability and no single-point failure in PFC stage. IC Role / Device Role / Timing Role: Fault-tolerant PFC controller with OVP2 pin providing independent overvoltage monitoring path. Use Value: Redundant OVP (main FB + dedicated OVP2) meets IEC 60601-1 creepage/clearance requirements without optocoupler feedback. |
Use Scenario: 7.5 kW VFD with active front-end rectifier operating in harsh factory environments (–25°C to +70°C). IC Role / Device Role / Timing Role: Robust CRM controller with –40°C to +150°C junction rating and CS open-detection for motor stall protection. Use Value: Built-in CS open detection halts switching within 150 μs of sense path failure, preventing IGBT shoot-through during overload. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CRM PFC control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC28070DR | Fixed-frequency average-current-mode control; requires current-sense transformer; no OVP2 pin. | Higher THD at light load; needs external OVP comparator; larger solution size due to transformer. | Prefer when design prioritizes predictable fixed-frequency EMI profile over CRM efficiency. |
| FAN6300MX | CRM controller with integrated 650 V MOSFET; no OVP2 pin; lower VCC max (18 V). | Single-chip solution reduces component count but limits max output voltage to 350 V DC. | Prefer for cost-sensitive <300 W designs where 390 V bus is not required. |
Compared with UCC28070DR and FAN6300MX, the R2A20133ESP#W0 uniquely combines GND-referenced ZCD (no auxiliary winding), dedicated OVP2 pin for redundant protection, and 24 V VCC rating - making it optimal for high-reliability 390 V PFC stages where layout space and fault coverage are critical.
Availability
R2A20133ESP#W0 is available at Aetrix Electronics and suitable for industrial LED drivers, server AC-DC power supplies, medical imaging modules, and industrial motor drives requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for R2A20133ESP#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 automotive, industrial, and enterprise applications.
The R2A20133ESP#W0 belongs to Renesas' CRM PFC controller product line, engineered specifically for high-efficiency, low-EMI AC-DC front-end conversion in industrial and medical power systems demanding robust protection and minimal external components.
FAQ
What is the purpose of the OVP2 pin on the R2A20133ESP#W0?
The OVP2 pin on the R2A20133ESP#W0 provides an independent overvoltage protection path separate from the main FB loop. It senses the PFC output voltage directly and triggers shutdown when exceeding Vfb × 1.20 - ensuring redundancy against FB pin faults or resistor-divider failures. This dual-path OVP architecture enhances system safety in medical and industrial applications where single-point failure must be avoided. The R2A20133ESP#W0's OVP2 functionality is confirmed in its block diagram and electrical characteristics table on pages 3 and 6 of the datasheet.
Does the R2A20133ESP#W0 require an auxiliary winding for zero-current detection?
No, the R2A20133ESP#W0 does not require an auxiliary winding for zero-current detection. It implements GND-referenced current sensing on the CS pin, eliminating the need for auxiliary windings or current transformers. This is explicitly stated in the device description: "Because the zero current is detected by using the GND current, the ZCD Auxiliary winding is unnecessary." The R2A20133ESP#W0 achieves this through internal comparator circuitry that monitors the shunt or transformer-coupled signal referenced to GND, reducing transformer complexity and BOM cost.
What is the maximum allowable supply voltage for the R2A20133ESP#W0 VCC pin?
The absolute maximum supply voltage for the R2A20133ESP#W0 VCC pin is +24 V, as specified in the Absolute Maximum Ratings table on page 4 of the datasheet. Operation above this voltage risks permanent damage. The recommended operating range starts at 9.5 V (UVLO turn-on threshold) and extends up to 24 V, with typical bias designs using 12 V or 15 V. The R2A20133ESP#W0's 24 V VCC rating supports wide-input auxiliary supplies and improves margin over competing CRM controllers rated only to 18 V.
How is the ZCD delay time adjusted on the R2A20133ESP#W0?
The ZCD delay time on the R2A20133ESP#W0 is adjusted via the RT pin using an external resistor. With RT = 200 kΩ, the typical delay is 0.87 μs - a value confirmed in the Electrical Characteristics table on page 5. This delay compensates for MOSFET turn-off propagation delay and suppresses false triggering caused by current ringing at the zero-crossing point. The R2A20133ESP#W0's adjustable ZCD delay is a key differentiator for stable CRM operation across varying MOSFET types and PCB layouts.
What protection features are integrated into the R2A20133ESP#W0?
The R2A20133ESP#W0 integrates six hardware-based protections: (1) UVLO with 1.0 V hysteresis, (2) dynamic and static OVP, (3) dedicated OVP2 pin monitoring, (4) FB low-detect (0.3 V threshold), (5) CS open-circuit detection (72.5 mV threshold), and (6) overcurrent protection at –0.6 V on the CS pin. All are implemented without external components, as verified in the Features section (page 1), Block Diagram (page 3), and Electrical Characteristics tables (pages 5–6). These features enable high-reliability PFC designs with minimal external circuitry - a core design objective of the R2A20133ESP#W0.
R2A20133ESP#W0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Mode:
- -
- Frequency - Switching:
- -
- Current - Startup:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
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- Mounting Type:
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- Supplier Device Package:
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R2A20133ESP#W0 FAQ
1.How can I place an order for R2A20133ESP#W0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R2A20133ESP#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 R2A20133ESP#W0 reliable?
The price and inventory of R2A20133ESP#W0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R2A20133ESP#W0 is usually 5 days.
3.What payment methods are accepted for R2A20133ESP#W0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R2A20133ESP#W0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R2A20133ESP#W0?
R2A20133ESP#W0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R2A20133ESP#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 R2A20133ESP#W0?
For technical support, including R2A20133ESP#W0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R2A20133ESP#W0 requirements.
6.How does Aetrix verify that R2A20133ESP#W0 is sourced from the original manufacturer or authorized distributors?
All R2A20133ESP#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 R2A20133ESP#W0 meets industry standards.
7.What is the process for return or replacement of R2A20133ESP#W0?
All R2A20133ESP#W0 units undergo pre-shipment inspection (PSI). If there is an issue with R2A20133ESP#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 R2A20133ESP#W0 part is unused and in its original packaging.
Return procedure for R2A20133ESP#W0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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