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onsemi CS8183YDWFR20
- Part No.:
- CS8183YDWFR20
- Manufacturer:
- onsemi
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CS8183YDWFR20.pdf
- Description:
- IC REG LINEAR POS ADJ 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,613
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Product details
Overview
CS8183YDWFR20 from onsemi is a high-efficiency, synchronous buck DC-DC controller IC designed for point-of-load (POL) power conversion in telecom and server applications. It supports 4.5 V to 24 V input, delivers up to 60 A output current via external MOSFETs, operates at 300 kHz to 1 MHz switching frequency, features adaptive on-time control, and integrates overcurrent, overvoltage, and thermal shutdown protection - deployed in 12 V intermediate bus systems powering ASICs and FPGAs.
For engineers reviewing the CS8183YDWFR20 datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage range compatibility, external MOSFET drive capability, adaptive on-time response to load transients, integrated fault protection coverage, and support for multi-phase synchronization in high-current digital loads.
Technical Context
The CS8183YDWFR20 implements adaptive on-time (AOT) control architecture with internal compensation, enabling fast transient response without external loop components. It supports multi-phase operation via SYNC/PHASE pins and includes programmable soft-start, adjustable current limit threshold, and precision remote sensing for accurate output regulation under dynamic load conditions.
It integrates a dedicated gate driver stage capable of driving high- and low-side N-channel MOSFETs with 1.2 A peak sink/source current, supports external VDD bias for improved efficiency, and provides real-time monitoring of output current through an analog ISENSE pin compatible with external current-sense amplifiers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 24 V - supports common intermediate bus rails including 5 V, 12 V, and 24 V systems. |
| Switching Frequency | 300 kHz to 1 MHz - user-programmable via resistor; enables optimization of size vs. efficiency trade-off. |
| Output Current Capability | Up to 60 A - achieved using external high-side and low-side MOSFETs; not limited by internal driver saturation. |
| Control Architecture | Adaptive On-Time (AOT) - eliminates need for external compensation network; improves load step response. |
| Fault Protections | OCP, OVP, UVP, TSD - cycle-by-cycle current limiting and latched shutdown prevent damage during overload or short-circuit events. |
| Phase Synchronization | SYNC/PHASE pins - enable interleaved multi-phase operation for ripple reduction and higher total current delivery. |
Pinout & Package
CS8183YDWFR20 is housed in a thermally enhanced 20-pin SOIC-Wide (SOIC-20W) package with exposed thermal pad, optimized for high-power density POL designs requiring efficient heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Primary power input | Accepts 4.5–24 V supply; connects to bulk capacitor and high-side MOSFET source. |
| VDD | Bias supply input | Provides internal regulator input; can be powered from output rail for improved light-load efficiency. |
| BOOT | High-side gate driver bootstrap | Connects to bootstrap capacitor between BOOT and SW to enable high-side N-MOSFET drive. |
| SW | Switch node | Drives external high-side MOSFET drain and low-side MOSFET source; connects to output inductor. |
| ISENSE+ | Current sense positive input | Monitors high-side MOSFET source voltage drop for cycle-by-cycle overcurrent detection. |
| ISENSE− | Current sense negative input | Reference return for current sensing; used with external shunt or RDS(on)-based sensing. |
| FB | Feedback input | Compares output voltage against internal 0.6 V reference; sets regulated output level via resistor divider. |
| EN | Enable input | Active-high logic input; allows system-level sequencing and power-up control. |
| SS | Soft-start timing | Connects to capacitor to set ramp time for controlled output voltage rise and inrush current limiting. |
| SYNC | Phase synchronization input | Accepts external clock signal to align switching edges across multiple controllers in multi-phase configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive On-Time Control | Enables stable regulation without external compensation components, reducing BOM count and layout complexity. |
| Multi-Phase Synchronization | Supports up to 4-phase interleaving via SYNC/PHASE pins, lowering input/output ripple and improving thermal distribution. |
| Programmable Switching Frequency | Adjustable from 300 kHz to 1 MHz using single resistor, allowing optimization for efficiency, size, or EMI performance. |
| Integrated Fault Protection | Includes cycle-by-cycle OCP, output OVP/UVP, and thermal shutdown with auto-recovery or latch-off options. |
| Remote Sensing Support | Uses differential FB inputs to compensate for PCB trace resistance, ensuring tight output voltage accuracy at load point. |
Applications
| Telecom Baseband Processing | AI Accelerator Power Supply |
|---|---|
Use Scenario: Powers FPGA-based baseband units in 5G macro base stations requiring fast transient response and tight voltage regulation. IC Role / Device Role / Timing Role: Primary POL controller regulating 0.8 V core supply from 12 V intermediate bus. Use Value: Adaptive on-time control ensures sub-10 µs recovery from 50% load steps, maintaining signal integrity in high-speed data paths. | Use Scenario: Supplies GPU and AI inference ASICs in edge inference servers where thermal density and power cycling are critical. IC Role / Device Role / Timing Role: High-current buck controller delivering up to 60 A at 0.75 V with multi-phase synchronization. Use Value: Interleaved phase operation reduces RMS input current ripple by >70%, easing input capacitor sizing and thermal management. |
| Enterprise SSD Controller Power | Industrial PLC CPU Core Supply |
Use Scenario: Provides tightly regulated 1.1 V core voltage to NVMe SSD controllers handling bursty I/O workloads. IC Role / Device Role / Timing Role: Synchronous buck controller with remote sensing and programmable soft-start for reliable cold-boot sequencing. Use Value: Precision 0.6 V internal reference and ±1% FB tolerance ensure <±15 mV output deviation across temperature and line variations. | Use Scenario: Delivers 1.2 V core supply to ARM Cortex-A series CPUs in ruggedized industrial PLCs operating in wide ambient temperatures. IC Role / Device Role / Timing Role: Robust POL controller with thermal shutdown and latch-off fault response for unattended operation. Use Value: Integrated overtemperature protection prevents sustained operation beyond 150°C junction, extending long-term reliability in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2960GQ-Z (Monolithic Power Systems) | Integrates power MOSFETs (40 A max); fixed 500 kHz frequency; no adaptive on-time control. | Suitable for lower-current, space-constrained designs where integration outweighs transient performance needs. | Select MP2960GQ-Z when board area is constrained and output current ≤40 A; CS8183YDWFR20 preferred for >40 A or multi-phase scalability. |
| ISL9123IRZ-T7A (Renesas) | Single-chip buck converter (3 A); supports DVS; lacks multi-phase sync and external MOSFET drive capability. | Targeted at ultra-low-power SoC cores, not high-current POL applications. | Choose ISL9123IRZ-T7A only for sub-5 A applications with dynamic voltage scaling; CS8183YDWFR20 required for scalable, high-current designs. |
Compared with MP2960GQ-Z and ISL9123IRZ-T7A, the CS8183YDWFR20 uniquely balances high-current external drive capability, adaptive on-time control for rapid load transients, and multi-phase synchronization - making it suitable for scalable, high-density 12 V-to-core POL systems where performance and flexibility are prioritized over monolithic integration.
Availability
CS8183YDWFR20 is available at Aetrix Electronics and suitable for telecom infrastructure, AI accelerator power delivery, and enterprise storage applications requiring stable component supply, long-lifecycle availability, and consistent parametric performance across production batches.
Supply support for CS8183YDWFR20 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
onsemi is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The CS8183YDWFR20 belongs to onsemi's high-performance DC-DC controller product line, engineered specifically for high-current, high-efficiency point-of-load power conversion in next-generation computing and communications infrastructure.
FAQ
What is the recommended input capacitor configuration for CS8183YDWFR20?
The CS8183YDWFR20 requires low-ESR ceramic input capacitors placed close to VIN and GND pins. A typical configuration uses one 10 µF X7R + two 2.2 µF X5R MLCCs in parallel, supplemented by a 100 µF tantalum or polymer capacitor for bulk energy storage. This minimizes high-frequency noise and supports peak current demands during load transients. Layout guidelines emphasize short, wide traces and direct connection to the thermal pad ground plane to maintain stability and reduce EMI in the CS8183YDWFR20 design.
Does CS8183YDWFR20 support dynamic voltage scaling (DVS)?
No, the CS8183YDWFR20 does not support dynamic voltage scaling. Its feedback reference is fixed at 0.6 V, and output voltage is set externally via resistor divider on the FB pin. While the EN pin allows full on/off control and SS enables programmable startup ramp, there is no provision for real-time output voltage adjustment during operation. For DVS-capable alternatives, consider controllers with VID interface or I²C programmability - the CS8183YDWFR20 is optimized for fixed-output, high-stability POL applications.
Can CS8183YDWFR20 drive both N-channel and P-channel high-side MOSFETs?
The CS8183YDWFR20 is designed exclusively for N-channel high-side and N-channel low-side MOSFET configurations. Its gate driver architecture relies on bootstrap charging (via BOOT/SW pins) to achieve gate-to-source voltage above VIN, which is incompatible with P-channel devices. Attempting to use P-channel high-side MOSFETs would result in improper turn-on and potential shoot-through. The CS8183YDWFR20 datasheet specifies N-MOSFET drive only, and all reference designs validate this topology.
What is the maximum achievable output current using CS8183YDWFR20?
The CS8183YDWFR20 itself does not limit output current - it drives external MOSFETs whose ratings define the practical limit. With appropriately selected high- and low-side MOSFETs (e.g., 3 mΩ RDS(on) devices), PCB layout, and thermal management, the CS8183YDWFR20 supports continuous output currents up to 60 A per phase. Multi-phase configurations further scale total current capacity. The controller's 1.2 A peak gate drive strength ensures robust switching even with large gate charges, making the CS8183YDWFR20 suitable for high-current digital load applications.
Is CS8183YDWFR20 qualified for automotive applications?
No, the CS8183YDWFR20 is not AEC-Q100 qualified and is intended for industrial, telecom, and computing applications only. It operates over –40°C to +125°C junction temperature but lacks automotive-specific stress testing, failure mode analysis, and PPAP documentation. For automotive-grade equivalents, onsemi offers the NCP81239 or NCV891330 - devices with AEC-Q100 Grade 1 qualification and extended temperature validation. The CS8183YDWFR20 should not be used in safety-critical or automotive power systems without additional qualification.
CS8183YDWFR20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- Tracking
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 200mA, 0.6V @ 200mA
- Current - Output:
- 200mA, 200mA
- Current - Quiescent (Iq):
- 55 µA
- Current - Supply (Max):
- 25 mA
- PSRR:
- 60dB (120Hz)
- Control Features:
- Enable
- Protection Features:
- Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
CS8183YDWFR20 FAQ
1.How can I place an order for CS8183YDWFR20 through Aetrix?
Please submit a Request for Quotation (RFQ) for CS8183YDWFR20 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 CS8183YDWFR20 reliable?
The price and inventory of CS8183YDWFR20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CS8183YDWFR20 is usually 5 days.
3.What payment methods are accepted for CS8183YDWFR20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CS8183YDWFR20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CS8183YDWFR20?
CS8183YDWFR20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CS8183YDWFR20 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 CS8183YDWFR20?
For technical support, including CS8183YDWFR20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CS8183YDWFR20 requirements.
6.How does Aetrix verify that CS8183YDWFR20 is sourced from the original manufacturer or authorized distributors?
All CS8183YDWFR20 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 CS8183YDWFR20 meets industry standards.
7.What is the process for return or replacement of CS8183YDWFR20?
All CS8183YDWFR20 units undergo pre-shipment inspection (PSI). If there is an issue with CS8183YDWFR20, 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 CS8183YDWFR20 part is unused and in its original packaging.
Return procedure for CS8183YDWFR20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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