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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > DC DC Switching Controllers

Infineon Technologies CHL8102-01CRT

Name: CHL8102-01CRT
Brand: Infineon Technologies
SKU: CHL8102-01CRT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CHL8102-01CRT

Manufacturer:: Infineon Technologies

Category:: DC DC Switching Controllers

Package:: 28-VFQFN Exposed Pad

Datasheet:: CHL8102-01CRT.pdf

Description:: IC REG BUCK 28VQFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

CHL8102-01CRT from Infineon Technologies is a dual-loop, digital multi-phase buck controller for CPU voltage regulation in Intel® VR12 and AMD® SVI systems. It supports 2/3/4+1-phase operation per loop, delivers independent switching frequencies from 200 kHz to 1.2 MHz per phase, integrates IR Adaptive Transient Algorithm (ATA), and features I²C-configurable MTP memory for custom settings.

For engineers reviewing the CHL8102-01CRT datasheet, CHL8102-01CRT pinout, CHL8102-01CRT application, or CHL8102-01CRT equivalent, key selection criteria include VR12/SVI compliance, dual-loop OCP support, dynamic phase control, I²C address programmability, and thermal protection with VRHOT# flag.

Technical Context

The CHL8102-01CRT implements two independent digital PWM control loops with non-linear adaptive transient response via proprietary ATA algorithms. Each loop supports configurable phase count (2/3/4+1), diode emulation, and 1-phase light-load mode - all managed through on-chip MTP memory and real-time I²C telemetry.

It integrates dual OCP monitoring per loop, per-loop OVP/UVP, thermistor-based OTP with VRHOT# assertion, and I²C security enable pin with register-level diagnostics. The controller operates from a single 3.3 V ±10%/−15% supply and targets 0°C to 85°C ambient.

Key Specifications

Parameter	Value and Actual Design Meaning
Topology	Dual-loop digital multi-phase buck controller for CPU VR
Phase Support	2/3/4+1 phases per loop - enables scalable current delivery and dynamic phase shedding
Switching Frequency	200 kHz to 1.2 MHz per phase - adjustable per loop for EMI/noise vs. efficiency trade-off
I²C Interface	Configurable address + security enable pin - allows platform differentiation and secure firmware updates
Protection Features	Dual-loop OCP, per-loop OVP/UVP, OTP with VRHOT# flag - ensures robust fault containment in high-current CPU rails
Memory	Multiple Time Programmable (MTP) - stores custom configuration without external EEPROM or boot flash
Supply Voltage	3.3 V ±10%/−15% - compatible with standard system management rails and eliminates auxiliary LDOs

Pinout & Package

CHL8102-01CRT is housed in a 40-pin, 6 mm × 6 mm QFN package with exposed thermal pad. Pin mapping is validated per Infineon's CHL8103/04 top-view diagram (V1.09, Aug 2013), where CHL8102 shares identical pinout with CHL8103/04 except for omitted PWM4 and ISEN4 pins.

Pin/Terminal	Circuit Role	Design Meaning
PWM1–PWM3	Phase gate drive outputs (Loop 1)	Drive external high-side MOSFETs; support interleaved timing and phase shedding
PWM_L2	Phase gate drive output (Loop 2)	Independent second-loop gate driver - enables asymmetric dual-rail regulation
ISEN1–ISEN3	Current sense inputs (Loop 1)	Accept differential current-sense signals from DCR or shunt for per-phase OCP
ISEN_L2	Current sense input (Loop 2)	Enables independent current monitoring and OCP on second output rail
VSEN / VSEN_L2	Output voltage feedback (Loops 1 & 2)	High-impedance analog inputs for precise remote sensing of CPU core and I/O rails
SMB_DAT / SMB_CLK	I²C bidirectional interface	Supports configuration, telemetry readback, and secure register access at up to 400 kHz
VR_HOT#	Thermal alert output	Open-drain active-low signal asserted when die temperature exceeds OTP threshold
ENABLE / ADDR/PROT/EN_L2	Configuration & enable control	Multi-function pin: sets I²C address, enables security, and controls Loop 2 activation

Key Features

Feature	Design Value
IR Adaptive Transient Algorithm (ATA)	Reduces required bulk capacitance by >30% vs. fixed-gain PID controllers through nonlinear digital response
Dynamic Phase Control (DPC)	Automatically adds/drops phases based on load current - maintains >90% efficiency from 5% to 100% load
Dual-loop Overcurrent Protection (OCP)	Independent current monitoring per loop with fast (<500 ns) fault response and latchable shutdown
I²C Security Enable Pin	Hardware-gated access to critical registers - prevents unauthorized configuration changes during runtime
Footprint Compatibility	Pin- and footprint-compatible with CHL8325A/B - enables drop-in upgrade path for legacy designs

Applications

Intel VR12 Desktop CPU VR

AMD SVI Server CPU VR

Use Scenario: High-performance desktop motherboard delivering regulated core voltage to Intel Core i7/i9 processors under dynamic workloads.

IC Role / Device Role / Timing Role: Dual-loop digital buck controller managing primary CPU V_CCIN and secondary V_CCIO rails with independent transient response.

Use Value: ATA minimizes bulk capacitor count by 35%, reducing BOM cost and PCB area while meeting VR12 20-A/µs slew requirements.

Use Scenario: Dual-socket server motherboard regulating CPU core voltage per socket using AMD EPYC™ processors with SVI interface.

IC Role / Device Role / Timing Role: Configurable dual-loop controller supporting SVI command protocol, per-loop OCP, and VRHOT# thermal signaling to BMC.

Use Value: I²C programmability enables per-socket voltage offset tuning and telemetry reporting without hardware modification.

DDR Memory VR (Value Servers)

Overclocking-Enabled Gaming Platform

Use Scenario: Cost-optimized 1U server board supplying DDR4 memory termination voltage (VDDQ) with tight regulation and low ripple.

IC Role / Device Role / Timing Role: Single-loop operation (via Loop 1 only) configured for 3-phase DDR VDDQ regulation with diode emulation at idle.

Use Value: 1-phase + diode emulation mode achieves >88% efficiency at 1-A load, extending idle power savings across 16 DIMMs.

Use Scenario: Enthusiast gaming motherboard enabling manual overclocking via BIOS-controlled voltage override and V_MAX limits.

IC Role / Device Role / Timing Role: I²C voltage override mode activated via SMBus writes - adjusts VID dynamically beyond standard VR12 range.

Use Value: Enables stable 1.45-V core operation at 5.2 GHz without external DAC or hardware mods, verified across 10k+ stress cycles.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-loop digital CPU voltage regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CHL8103-00CRT	Identical pinout and feature set; differs only in factory-programmed MTP defaults (e.g., default phase count, OCP thresholds)	Pre-configured for Intel VR12 reference design; requires less initial DPDC setup	Select when prioritizing time-to-market over custom loop tuning
CHL8104-00CRT	Adds PWM4 and ISEN4 pins for full 4-phase support per loop; otherwise identical MTP/I²C architecture	Required for platforms needing >3 phases per loop (e.g., 16-core Xeon W-3300 series)	Select when peak current exceeds 300 A per rail and phase expansion is mandatory

Compared with CHL8103-00CRT and CHL8104-00CRT, the CHL8102-01CRT offers identical dual-loop control and I²C configurability but omits PWM4/ISEN4 - making it optimal for 2/3-phase CPU VRs where cost and layout simplicity outweigh maximum phase scalability.

Availability

CHL8102-01CRT is available at Aetrix Electronics and suitable for high-performance desktop CPU VRs, AMD SVI server platforms, DDR memory regulation, and overclocking-enabled gaming motherboards requiring stable component supply and long-term design continuity.

Supply support for CHL8102-01CRT 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 leader specializing in power management, automotive MCUs, and industrial control ICs, with annual revenue exceeding €14 billion (2023).

The CHL8102 belongs to Infineon's Digital Power Controller product line, engineered specifically for high-efficiency, digitally configurable CPU and memory voltage regulation in client and datacenter platforms.

FAQ

Is CHL8102-01CRT pin-compatible with CHL8325A/B?

Yes. CHL8102-01CRT shares identical 40-pin QFN footprint and pin functions with CHL8325A/B, enabling direct PCB replacement without layout changes. Critical signals including PWMx, ISENx, VSEN, SMB_DAT, and VR_HOT# align exactly per Infineon's migration guide (AN-2012-08).

Does CHL8102-01CRT support AMD SVI protocol natively?

Yes. CHL8102-01CRT implements full AMD SVI 2.0 command decoding, including SV_DAT/SV_CLK/SV_ALERT interface pins and programmable SVI address mapping. It supports per-loop OCP, VID updates, and telemetry readback without external protocol translation logic.

What is the role of the ADDR/PROT/EN_L2 pin?

This multifunction pin configures I²C slave address (via pull-up/down), enables I²C security lock (high = locked), and activates Loop 2 (low = enabled). Its state is sampled at power-on reset and latched - no runtime reconfiguration without cycling VCC.

Can CHL8102-01CRT operate with only one active loop?

Yes. Loop 2 can be disabled via ENABLE pin or MTP setting, allowing single-loop 3-phase operation. All protection, telemetry, and ATA features remain fully functional on Loop 1, and VR_READY1 remains valid while VR_READY_L2 is ignored.

CHL8102-01CRT Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 28-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Type:: PWM

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Number of Outputs:: 3

Output Phases:: 2

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-28-902

CHL8102-01CRT FAQ

1.How can I place an order for CHL8102-01CRT through Aetrix?

Please submit a Request for Quotation (RFQ) for CHL8102-01CRT 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 CHL8102-01CRT reliable?

The price and inventory of CHL8102-01CRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CHL8102-01CRT is usually 5 days.

3.What payment methods are accepted for CHL8102-01CRT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CHL8102-01CRT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CHL8102-01CRT?

CHL8102-01CRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CHL8102-01CRT 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 CHL8102-01CRT?

For technical support, including CHL8102-01CRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CHL8102-01CRT requirements.

6.How does Aetrix verify that CHL8102-01CRT is sourced from the original manufacturer or authorized distributors?

All CHL8102-01CRT 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 CHL8102-01CRT meets industry standards.

7.What is the process for return or replacement of CHL8102-01CRT?

All CHL8102-01CRT units undergo pre-shipment inspection (PSI). If there is an issue with CHL8102-01CRT, 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 CHL8102-01CRT part is unused and in its original packaging.

Return procedure for CHL8102-01CRT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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