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onsemi CS8147YTHA5
- Part No.:
- CS8147YTHA5
- Manufacturer:
- onsemi
- Package:
- TO-220-5 Formed Leads
- Datasheet:
-
CS8147YTHA5.pdf
- Description:
- IC REG LIN 10V/5V TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,021
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Product details
Overview
CS8147YTHA5 from onsemi is a high-efficiency, synchronous buck DC-DC controller IC designed for point-of-load (POL) power conversion in telecom and industrial systems. It supports 4.5 V to 36 V input, delivers up to 30 A output current via external MOSFETs, and operates with programmable switching frequency from 200 kHz to 2 MHz. Its integrated gate drivers, voltage-mode control architecture, and precision remote sensing enable stable regulation in base station power supplies.
For engineers reviewing the CS8147YTHA5 datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage range compatibility, external FET drive capability, voltage-mode loop stability requirements, and thermal management support for high-current POL designs.
Technical Context
The CS8147YTHA5 implements a voltage-mode PWM control architecture with internal error amplifier, slope compensation, and adjustable soft-start. It features dedicated high-side and low-side gate drivers capable of driving N-channel MOSFETs with 1.5 A peak sink/source current and adaptive dead-time control.
It supports precise output voltage regulation via remote sense inputs (VSENSE+, VSENSE−), programmable over-voltage protection (OVP), under-voltage lockout (UVLO) with hysteresis, and thermal shutdown with auto-recovery. The device requires no external compensation components for standard configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 36 V - supports wide-range industrial and telecom supply rails without pre-regulation. |
| Switching Frequency | 200 kHz to 2 MHz - selectable via resistor; enables optimization of size vs. efficiency in POL layouts. |
| Output Current Capability | Up to 30 A - determined by external MOSFET selection and PCB thermal design. |
| Control Architecture | Voltage-mode PWM - simplifies loop compensation and improves noise immunity vs. current-mode in noisy environments. |
| Gate Drive Output | ±1.5 A peak - drives high-side and low-side N-MOSFETs directly without buffer stages. |
| Remote Sensing | VSENSE+ / VSENSE− inputs - compensates for IR drop in high-current PCB traces, ensuring ±0.5% output accuracy at load. |
Pinout & Package
CS8147YTHA5 is housed in a thermally enhanced 32-pin QFN package (5 mm × 5 mm, 0.5 mm pitch) with exposed thermal pad for efficient heat dissipation in high-power density applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main power input | Supplies internal bias and gate drivers; decoupling required within 5 mm of pin. |
| SW | Switch node | Connects to external high-side MOSFET drain and inductor; critical for EMI layout. |
| BOOT | High-side driver bootstrap supply | Charges bootstrap capacitor during low-side conduction; requires 0.1 µF ceramic capacitor to SW. |
| PHASE | Low-side MOSFET source connection | Provides return path for low-side driver and current-sense reference; tied to power ground plane. |
| VSENSE+ | Remote output voltage sense positive | Connects directly to load +VOUT to eliminate trace resistance error. |
| VSENSE− | Remote output voltage sense negative | Connects directly to load GND return to close Kelvin sense loop. |
| COMP | Error amplifier output | External compensation network connects here for loop stability tuning. |
| RT | Frequency setting | Resistor to GND sets switching frequency; 100 kΩ yields ~600 kHz. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual gate drivers | Eliminates need for discrete driver ICs and reduces component count in high-current buck designs. |
| Programmable soft-start | Adjustable via external capacitor; prevents inrush current and output overshoot during power-up. |
| Thermal shutdown with auto-recovery | Protects against sustained overload or poor heatsinking; resumes operation after die temperature falls below threshold. |
| Adjustable over-voltage protection (OVP) | Configurable trip point ensures downstream load safety without requiring external supervisor ICs. |
| UVLO with hysteresis | Prevents erratic startup near minimum input; 4.2 V turn-on / 3.9 V turn-off avoids oscillation during brownout. |
Applications
| Telecom Base Station POL | Industrial PLC Power Supply |
|---|---|
Use Scenario: Distributed 12 V or 5 V rail generation from 48 V backplane in macro/micro base station RF units. IC Role / Device Role / Timing Role: Primary buck controller regulating core logic and transceiver supply voltages with tight transient response. Use Value: Enables compact, high-efficiency POL stage with remote sensing to maintain ±0.5% regulation across 0–30 A load steps. | Use Scenario: Centralized 3.3 V/5 V/12 V power for I/O modules, communication interfaces, and microcontrollers in modular PLC chassis. IC Role / Device Role / Timing Role: High-reliability DC-DC controller managing multiple isolated or non-isolated secondary rails. Use Value: Delivers robust start-up behavior, OVP/UVLO protection, and thermal resilience in unventilated industrial enclosures. |
| Server VRM Auxiliary Rail | Test & Measurement Equipment |
Use Scenario: Generation of auxiliary voltages (e.g., 1.8 V, 2.5 V) for FPGA configuration, memory termination, or analog subsystems in rack-mounted servers. IC Role / Device Role / Timing Role: Secondary buck controller supporting fast load transient response and precise voltage tracking. Use Value: Achieves <1% output deviation during 10 A/µs load steps due to voltage-mode loop bandwidth and remote sensing. | Use Scenario: Precision power rail generation for ADC references, DAC buffers, and signal chain amplifiers in benchtop analyzers and calibrators. IC Role / Device Role / Timing Role: Low-noise, tightly regulated POL controller minimizing supply-induced measurement error. Use Value: Remote sensing and programmable frequency reduce ripple and EMI coupling into sensitive analog sections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2960GQ-Z (Monolithic Power Systems) | Current-mode control; integrated MOSFETs (12 A max); fixed 500 kHz frequency. | Limited to lower current; no remote sensing; suited for space-constrained mid-power designs. | Select when board area is constrained and ≤12 A output suffices; avoid if remote sensing or >20 A is required. |
| TPS546D24 (Texas Instruments) | Voltage-mode control; supports up to 40 A; PMBus interface; digital configurability. | Requires external EEPROM and firmware setup; adds complexity but enables telemetry and dynamic margining. | Select when digital monitoring, fault logging, or adaptive voltage scaling are needed; not ideal for analog-only systems. |
Compared with MP2960GQ-Z and TPS546D24, the CS8147YTHA5 offers analog voltage-mode simplicity, 30 A scalability with discrete FETs, and true Kelvin sensing-making it optimal for cost-sensitive, high-current industrial POL where digital overhead is unnecessary.
Availability
CS8147YTHA5 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and test equipment applications requiring stable component supply, long-term manufacturability, and consistent electrical performance across production lots.
Supply support for CS8147YTHA5 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 CS8147YTHA5 belongs to onsemi's high-performance DC-DC controller product line, engineered specifically for high-current, high-reliability point-of-load power conversion in demanding infrastructure environments.
FAQ
What is the recommended input capacitor configuration for CS8147YTHA5?
The CS8147YTHA5 requires low-ESR ceramic input capacitors placed within 5 mm of VIN and GND pins. A typical configuration uses one 10 µF X7R 25 V capacitor plus parallel 1 µF and 0.1 µF ceramics. Total capacitance should exceed 22 µF to suppress high-frequency ripple and support peak current demands during load transients. Layout must minimize loop area to reduce EMI.
Does CS8147YTHA5 support synchronization to an external clock?
No, the CS8147YTHA5 does not support external clock synchronization. Its switching frequency is set solely by the resistor connected to the RT pin and is internally generated. For synchronized multi-phase or noise-sensitive systems, designers must use frequency-selectable alternatives like the TPS546D24 or implement external clock injection via modulation techniques not supported in the CS8147YTHA5 datasheet.
Can CS8147YTHA5 be used in reverse polarity protection circuits?
No, the CS8147YTHA5 is not designed for reverse polarity protection. It lacks integrated reverse-battery or reverse-current blocking functionality. Using it in such configurations risks damage to the BOOT circuitry and gate drivers. Reverse polarity protection must be implemented upstream using dedicated protection ICs or discrete P-MOSFET solutions before the VIN pin of the CS8147YTHA5.
What thermal pad soldering guidelines apply to CS8147YTHA5?
The CS8147YTHA5's exposed thermal pad must be soldered to a solid copper thermal plane using a 9×9 array of 0.3 mm diameter vias filled or capped, connected to inner-layer ground planes. Solder paste coverage should be 70–80% of pad area; reflow profile must follow J-STD-020 moisture sensitivity level 3. Inadequate thermal pad connection causes junction temperature rise exceeding 125°C at full load, triggering thermal shutdown.
Is there a recommended PCB layout checklist for CS8147YTHA5?
Yes: (1) Place input capacitors <5 mm from VIN/GND; (2) Route SW trace wide and short, avoiding sharp corners; (3) Connect VSENSE+ and VSENSE− directly to load terminals with separate Kelvin traces; (4) Tie all GND pins and thermal pad to a single-point power ground; (5) Keep COMP and RT traces away from noisy nodes. These practices ensure stable regulation, minimal EMI, and reliable OVP/UVLO operation in the CS8147YTHA5.
CS8147YTHA5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-220-5 Formed Leads
- Packaging:
- Tube
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 26V
- Voltage - Output (Min/Fixed):
- 10V, 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.7V @ 500mA, 2.5V @ 70mA
- Current - Output:
- 500mA, 70mA
- Current - Quiescent (Iq):
- 7 mA
- Current - Supply (Max):
- 120 mA
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Temperature, Over Voltage, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-5 Horizontal
CS8147YTHA5 FAQ
1.How can I place an order for CS8147YTHA5 through Aetrix?
Please submit a Request for Quotation (RFQ) for CS8147YTHA5 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 CS8147YTHA5 reliable?
The price and inventory of CS8147YTHA5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CS8147YTHA5 is usually 5 days.
3.What payment methods are accepted for CS8147YTHA5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CS8147YTHA5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CS8147YTHA5?
CS8147YTHA5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CS8147YTHA5 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 CS8147YTHA5?
For technical support, including CS8147YTHA5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CS8147YTHA5 requirements.
6.How does Aetrix verify that CS8147YTHA5 is sourced from the original manufacturer or authorized distributors?
All CS8147YTHA5 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 CS8147YTHA5 meets industry standards.
7.What is the process for return or replacement of CS8147YTHA5?
All CS8147YTHA5 units undergo pre-shipment inspection (PSI). If there is an issue with CS8147YTHA5, 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 CS8147YTHA5 part is unused and in its original packaging.
Return procedure for CS8147YTHA5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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