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Seeking a Domestic Alternative to TPS92692-Q1 for Automotive Lighting? Meet the JWQ11886

SHENGYAO  ꄲ  domestic alternative  ꄲ  Seeking a Domestic Alternative to TPS92692-Q1 for Automotive Lighting? Meet the JWQ11886

Introduction:

Are you working on automotive headlight control units, battery-powered lighting, or industrial LED drivers and struggling to find a domestic alternative to the TPS92692-Q1? A qualified domestic automotive LED controller is here to replace it!

 

This analysis compares two popular chips:

JWQ11886 (JoulWatt Technology)

TPS92692-Q1 (Texas Instruments)

We will explore whether they are pin-to-pin compatible and compare their performance.

 

1. Product Definition and Target Application Comparison

 

 

Item

TPS92692-Q1

JWQ11886

Supplier

Texas Instruments (TI)

JoulWatt Technology

Product Positioning

High-Performance Peak Current Mode LED Controller

High-Accuracy LED Controller (Automotive Grade)

Target Applications

Automotive Exterior Lighting (Headlights, DRLs, Taillights), Driver Monitoring Systems (DMS), General Lighting

Automotive Headlights/DRLs/Position Lights, General Lighting

Key Advantages

Supports Buck/Boost/Buck-Boost Topologies, Flexible Design

High-Side Current Sense, Analog & PWM Dimming, Spread Spectrum for EMI Reduction

Both chips are positioned for automotive LED driving. The JWQ11886 emphasizes high integration and EMI optimization, while the TPS92692-Q1 offers greater flexibility in topology support and functional expansion.

 

2. Package and Pin Layout Comparison (Pin-to-Pin Analysis)

Pin #

TPS92692-Q1 (HTSSOP-20)

JWQ11886 (HTSSOP-20)

Compatibility

1

VIN

VIN

✅ Consistent, Power Input

2

VREF

VREG5

✅ Consistent, 5V LDO Output

3

FLT

FLT

✅ Consistent, Fault Indicator Output

4

SS

SS

✅ Consistent, Soft Start

5

DIM

SSM

⚠️ PWM Dimming vs. Spread Spectrum Control

6

RT

RT/SYNC

✅ Consistent, Frequency Set/Sync

7

COMP

COMP

✅ Consistent, Compensation

8

IMON

IMON

✅ Consistent, Current Monitor Output

9

IADJ

IADJ

✅ Consistent, Analog Dimming Input

10

DIM/PWM

DIM

✅ Consistent, PWM Dimming Input

11

RAMP

GPWM

⚠️ Dimming Slope vs. PWM Generation Config

12

PDRV

PDRV

✅ Consistent, External MOSFET Driver

13

CSN

CSN

✅ Consistent, Current Sense Negative

14

CSP

CSP

✅ Consistent, Current Sense Positive

15

OVP

OVP

✅ Consistent, Overvoltage Protection Input

16

SLOPE

SLOPE

✅ Consistent, Slope Compensation

17

GND

GND

✅ Consistent, Ground

18

IS

SCS

⚠️ Current Sense (Different Naming)

19

GATE

GDRV

✅ Consistent, Gate Drive Output

20

VCC

VCC

✅ Consistent, Internal Supply

Package Compatibility Summary:

Both chips use the standard HTSSOP-20 package.

Pin numbers, names, and functions are fully consistent or highly compatible.

Direct pin-to-pin replacement is possible without PCB modification, but attention is needed for the matching of peripheral circuits related to DIM/PWM control and slope setting.

Conclusion: ✅ Direct Pin-to-Pin replacement is feasible with high compatibility.

3. Comprehensive Electrical Characteristics Comparison

Parameter

TPS92692-Q1

JWQ11886

Notes

Input Voltage Range

4.5V – 65V

4.5V – 65V

✅ Consistent

LED Current Accuracy

Better than ±4% (-40°C to 150°C)

Lower than ±4% (-40°C to 150°C)

✅ Consistent, High Accuracy

PWM Dimming

External DIM Control, >1000:1 Range

Internal PWM Generator Supported, >1000:1 Range

✅ JWQ11886 offers more flexible dimming

Analog Dimming

Supported, >15:1 Range

Supported, 15:1 Range

✅ Consistent

Current Sense

High-Side Resistor

High-Side with Internal Amp

✅ JWQ11886 may offer integrated convenience

Switching Frequency

100kHz – 2.2MHz

Programmable, External Sync

TPS92692-Q1 supports higher frequencies

EMI Optimization

Spread Spectrum

Spread Spectrum

✅ Consistent, both feature SSFM

Fault Protection

OVP, OCP, UVP, UVLO, OTP

OVP, UVP, OCP, OTP, UVLO

✅ Comprehensive protection on both

Performance Comparison Conclusion:

✅ JWQ11886 matches or potentially exceeds in key areas like voltage range, dimming flexibility, EMI performance, and protection features.

✅ TPS92692-Q1 supports a higher switching frequency range, potentially suitable for compact designs.

✅ The high degree of pin and functional compatibility confirms the feasibility of direct substitution after careful peripheral circuit review.

Technical Disclaimer: This analysis is based on publicly available datasheets and is for informational purposes. Specifications are subject to change by the manufacturers. Always consult the latest official datasheets and validate designs thoroughly before production.

2026/01/08 16:14
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