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Infineon Technologies CHL8104-01CRT
- Part No.:
- CHL8104-01CRT
- Manufacturer:
- Infineon Technologies
- Category:
- DC DC Switching Controllers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
CHL8104-01CRT.pdf
- Description:
- IC REG BUCK 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,502
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Product details
Overview
CHL8104-01CRT from Infineon Technologies is a dual-loop, 4+1-phase digital buck controller for CPU voltage regulation in Intel® VR12 and AMD® SVI systems. It supports independent per-phase switching frequencies (200 kHz–1.2 MHz), IR Adaptive Transient Algorithm (ATA), Dynamic Phase Control (DPC), and I²C-configurable dual OCP with programmable addressing. Used in high-performance desktop CPU VRMs.
For engineers reviewing the CHL8104-01CRT datasheet, CHL8104-01CRT pinout, CHL8104-01CRT application, or CHL8104-01CRT equivalent, key selection criteria include VR12/SVI compliance, 4+1-phase topology support, I²C telemetry interface, thermal protection with VRHOT# flag, and MTP-based custom configuration storage.
Technical Context
The CHL8104-01CRT implements two independent digital PWM control loops: Loop 1 (4-phase) and Loop 2 (1-phase), each with dedicated current sensing (ISEN1–ISEN4, ISEN_L2), voltage feedback (VSEN, VSEN_L2), and thermal monitoring (TSEN1, TSEN2). It integrates IR Efficiency Shaping technology to optimize efficiency across load range via dynamic phase shedding and active diode emulation.
Configuration and telemetry occur over a secure I²C bus with pin-programmable address (ADDR/PROT/EN_L2), SMBus-compatible signaling (SMB_DAT/SMB_CLK), and hardware-enforced security enable (ENABLE). Fault management includes per-loop OVP/UVP/OCP, OTP, and VRHOT# assertion with thermistor-based temperature sensing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Dual-loop, 4+1-phase synchronous buck controller for CPU core and graphics/auxiliary rail regulation. |
| Input Voltage Range | 3.3 V ±10%/−15% supply; supports 0°C to 85°C industrial operating temperature. |
| Switching Frequency | Per-phase programmable 200 kHz to 1.2 MHz; enables optimized EMI and efficiency trade-offs. |
| Interface | I²C with pin-selectable address and hardware security enable; supports real-time telemetry and configuration. |
| Fault Protection | Per-loop OVP, UVP, OCP; system-level OTP and VRHOT# flag with thermistor input (TSEN1/TSEN2). |
| Memory | Multiple Time Programmable (MTP) non-volatile memory for storing custom loop parameters and safety thresholds. |
| Compliance | Fully compliant with Intel® VR12 and AMD® SVI specifications including dual OCP and programmable addressing. |
Pinout & Package
CHL8104-01CRT is housed in a 40-pin, 6 mm × 6 mm QFN package with exposed thermal pad (RoHS-compliant, Pb-free).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PWM1–PWM4 | Phase gate drive outputs (Loop 1) | Drive external high-side MOSFETs in 4-phase configuration; support IR ATL and 3.3 V tri-state drivers. |
| PWM_L2 | Phase gate drive output (Loop 2) | Drives single-phase auxiliary rail (e.g., GPU or SOC I/O); independent frequency and OCP setting. |
| ISEN1–ISEN4, ISEN_L2 | Current sense inputs | Accept differential signals from DCR or shunt-based current sensing; enable per-phase OCP and ATA. |
| VSEN, VSEN_L2 | Output voltage feedback | High-precision analog inputs for closed-loop voltage regulation of main and auxiliary rails. |
| TSEN1, TSEN2 | Thermistor interface | Analog inputs for external NTC thermistors; trigger VRHOT# and thermal shutdown when threshold exceeded. |
| SMB_DAT, SMB_CLK | I²C bidirectional interface | Support standard-mode (100 kHz) and fast-mode (400 kHz) I²C communication for configuration and telemetry. |
| VR_HOT#, VR_READY1/L21 | Status flags | Open-drain outputs indicating thermal fault (VR_HOT#) and power-good status per loop (VR_READY1, VR_READY_L21). |
Key Features
| Feature | Design Value |
|---|---|
| IR Adaptive Transient Algorithm (ATA) | Proprietary non-linear digital PWM reduces required bulk capacitance by >30% versus fixed-gain controllers. |
| Dynamic Phase Control (DPC) | Automatically adds/drops phases based on real-time load current; enables 1-phase + diode emulation mode at light loads. |
| Dual OCP with programmable addressing | Independent overcurrent thresholds per loop; I²C address set via ADDR/PROT/EN_L2 pin for multi-controller bus sharing. |
| MTP configuration storage | On-chip non-volatile memory stores loop gains, protection thresholds, and startup sequences-eliminates external EEPROM. |
| VR12 & SVI compliance | Meets Intel VR12 timing, sequencing, and telemetry requirements and AMD SVI command set for dual-rail coordination. |
Applications
| Desktop CPU VRM | Server DDR Memory VR |
|---|---|
Use Scenario: High-end gaming and workstation motherboards requiring precise, adaptive core voltage regulation under dynamic CPU workloads. IC Role / Device Role / Timing Role: Primary dual-loop VR controller managing 4-phase CPU core rail and 1-phase integrated graphics or SOC rail. Use Value: ATA and DPC reduce bulk capacitor count by ≥30% while maintaining <±5 mV transient deviation per Intel VR12 spec. | Use Scenario: Dual-socket server platforms with DDR4/DDR5 memory subsystems needing independent, low-noise VDDQ regulation. IC Role / Device Role / Timing Role: Secondary loop (Loop 2) configured as standalone 3-phase DDR memory VR with independent OCP and thermal monitoring. Use Value: Per-phase current sensing and VRHOT# flag enable safe, thermally aware memory rail operation up to 85°C ambient. |
| AMD AM5 Platform VR | OEM Overclocking System |
Use Scenario: AM5 socket motherboards implementing AMD SVI2 protocol for coordinated CPU and SoC voltage control. IC Role / Device Role / Timing Role: SVI2-compliant controller using SV_DAT1/SV_CLK1 pins to negotiate voltage/frequency states with AMD CPU. Use Value: Pin-programmable I²C address and dual OCP allow coexistence with companion VR controllers on shared bus without conflict. | Use Scenario: Enthusiast-grade motherboards supporting manual voltage override and overclocking profiles. IC Role / Device Role / Timing Role: I²C-accessible Vmax register and voltage override commands enable real-time adjustment of maximum output voltage during runtime. Use Value: Enables stable overclocking up to 1.5 V with configurable OCP thresholds and thermal derating via TSEN inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-loop multi-phase buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6367IRZ | Single-loop 7-phase controller; no dual-rail support; lacks VRHOT# and TSEN inputs. | Targeted at single-rail high-current CPU VR only; not suitable for AMD SVI or dual-rail coordination. | Select when only one high-current rail is needed and thermal flagging is unnecessary. |
| MP2960AUK-LF-Z | Dual-loop 4+1-phase controller with PMBus interface; no native SVI support; requires external EEPROM for config. | Designed for generic VR12.5 systems; lacks pin-programmable I²C address and VRHOT# flag. | Select when PMBus ecosystem integration is preferred and SVI compatibility is not required. |
Compared with ISL6367IRZ and MP2960AUK-LF-Z, CHL8104-01CRT uniquely combines VR12/SVI dual-spec compliance, integrated VRHOT# with thermistor inputs, and MTP-based configuration-enabling compact, thermally robust dual-rail designs without external memory or protocol translation.
Availability
CHL8104-01CRT is available at Aetrix Electronics and suitable for high-performance desktop CPU VRMs, AMD AM5 platform power delivery, server DDR memory regulation, and enthusiast overclocking systems requiring stable component supply and long-term design continuity.
Supply support for CHL8104-01CRT 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
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in digital power controller innovation.
CHL8104-01CRT belongs to Infineon's IR Digital Power family, engineered specifically for high-efficiency, multi-rail CPU voltage regulation in desktop and server platforms demanding VR12/SVI compliance and adaptive transient response.
FAQ
What is the function of the VRHOT# pin on CHL8104-01CRT?
The VRHOT# pin is an open-drain output that asserts low when die temperature exceeds the programmed thermal threshold, using analog inputs TSEN1/TSEN2 connected to external NTC thermistors. It directly interfaces with motherboard EC or PCH to initiate thermal throttling or system shutdown, eliminating need for external thermal monitoring ICs.
Does CHL8104-01CRT support both Intel VR12 and AMD SVI protocols simultaneously?
Yes - CHL8104-01CRT supports both protocols via pin-strapping: SV_ALERT1/SV_CLK1/SV_DAT1 pins implement AMD SVI2 handshake, while VR_READY1/VR_READY_L21 and SMBus registers comply with Intel VR12 telemetry and sequencing. Mode selection is hardware-configured at boot via MODE pin (Pin 1 = Intel, Pin 2 = AMD).
How is configuration stored and updated on CHL8104-01CRT?
Configuration is stored in on-chip Multiple Time Programmable (MTP) memory, programmed once during manufacturing or field update via I²C using Infineon's Digital Power Design Center (DPDC) GUI. No external EEPROM is required, and settings persist through power cycles with guaranteed >100 write cycles and 20-year data retention.
Can CHL8104-01CRT operate with only one active phase in light-load conditions?
Yes - via Dynamic Phase Control (DPC), CHL8104-01CRT automatically transitions Loop 1 from 4-phase to 1-phase operation and enables Active Diode Emulation mode when load drops below ~5 A. This reduces switching losses and improves light-load efficiency without requiring firmware intervention.
CHL8104-01CRT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Type:
- PWM
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Number of Outputs:
- 5
- Output Phases:
- 4
- Voltage - Supply (Vcc/Vdd):
- 3.3V
- Frequency - Switching:
- 200kHz ~ 1.2MHz
- Duty Cycle (Max):
- -
- Synchronous Rectifier:
- No
- Clock Sync:
- No
- Serial Interfaces:
- I2C
- Control Features:
- Enable, Power Good
- Operating Temperature:
- 0°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-VQFN-40-903
CHL8104-01CRT FAQ
1.How can I place an order for CHL8104-01CRT through Aetrix?
Please submit a Request for Quotation (RFQ) for CHL8104-01CRT 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 CHL8104-01CRT reliable?
The price and inventory of CHL8104-01CRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CHL8104-01CRT is usually 5 days.
3.What payment methods are accepted for CHL8104-01CRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CHL8104-01CRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CHL8104-01CRT?
CHL8104-01CRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CHL8104-01CRT 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 CHL8104-01CRT?
For technical support, including CHL8104-01CRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CHL8104-01CRT requirements.
6.How does Aetrix verify that CHL8104-01CRT is sourced from the original manufacturer or authorized distributors?
All CHL8104-01CRT 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 CHL8104-01CRT meets industry standards.
7.What is the process for return or replacement of CHL8104-01CRT?
All CHL8104-01CRT units undergo pre-shipment inspection (PSI). If there is an issue with CHL8104-01CRT, 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 CHL8104-01CRT part is unused and in its original packaging.
Return procedure for CHL8104-01CRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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