INJOINIC IP6520_Q1 - Multi-Protocol Buck SOC for Fast Charging
IP6520_Q1 is an automotive-grade synchronous buck converter for in-vehicle charging applications from 15 W to 27 W, compliant with AEC-Q100 Grade 2 (–40 °C to +105 °C).
Featuring a highly integrated SoC architecture, it integrates power MOSFETs, a synchronous buck controller, and charging protocol detection in a single chip. With a path-MOS-free design, only 7 passive components and one inductor are required to achieve 18 W PD 3.0 certification, significantly reducing BOM cost, PCB area, and design complexity. IP6520_Q1 is well suited for compact automotive USB chargers.
Key Highlights
Input voltage: 7.3 V–29.5 V
Output voltage: 3 V–12 V
Up to 93.2% efficiency (VIN = 16 V, VOUT = 5 V / 3 A)
USB Type-C and USB PD (PD 2.0 / PD 3.1 / PPS)
Supports QC, AFC, FCP, BC1.2, and Apple protocols
Comprehensive protection and 2 kV HBM ESD
The application schematic diagram is as follows:
The IP6520_Q1 delivers a highly integrated 15W-27W automotive charging solution in a breakthrough SoC design. This innovative architecture integrates power MOSFETs, synchronous buck controller and protocol recognition while eliminating path MOSFETs - an industry first. With just 7 passive components and 1 inductor, it achieves 18W PD3.0 certification, reducing BOM cost by 40% and PCB space by 30% for compact in-car charger designs.
The IP6520_Q1 automotive charging solution delivers 15W–27W output with a fully integrated SoC, combining power MOSFETs, synchronous buck control, and protocol detection.
It eliminates external path MOSFETs, needing only 7 passive components plus 1 inductor to achieve 18W PD3.0 certification, reducing BOM cost and PCB space. Ideal for compact automotive chargers and space-constrained designs.
IP6520_Q1 Physical Map1
IP6520_Q1 Physical Map2
IP6529_Q1 is a high-efficiency automotive-grade synchronous buck converter supporting up to 45 W output and multiple fast-charging protocols, including PD3.1 and UFCS. It features an integrated power MOSFET, I²C interface for MCU control, 12-bit ADC for voltage/current/temperature monitoring, and soft-start for stable operation.
Key Highlights
Input / Output: 7.3 V–32 V | 3 V–21 V
Efficiency & Regulation: CV/CC regulation, up to 92.7% efficiency (VIN = 24 V, VOUT = 5 V / 3 A)
Fast-Charging Support: USB Type-C PD, PPS, BC1.2, Apple, QC, AFC, FCP, UFCS
Protection: Over-voltage, under-voltage, over-current, short-circuit, over-temperature
Package & Design: Ultra-compact QFN24 (4 mm × 4 mm) for space-saving and flexible layout
Certification: UFCS-certified, ideal for compact fast-charging adapters and automotive USB chargers
Key features:
Integrated power MOSFETs
Input voltage range: 7.3V – 32V
Output voltage range: 3V – 21V
Integrated output voltage line compensation
CV/CC output characteristics
High efficiency: VIN = 24V, VOUT = 5V/3A, board efficiency = 92.7%
Supports Type-C output and USB PD protocols
Supports 5V, 9V, 12V, 15V, 20V outputs
Supports PD2.0, PD3.1, PPS protocols
PPS output: 3.3V – 21V, 20mV step
Fast-charging output protocols:
PD (Type-C)
BC1.2 & Apple
QC2.0, QC3.0, QC3+
AFC
FCP
UFCS
Multiple protections for high reliability:
Input over-voltage / under-voltage
Output short-circuit / over-current
Over-temperature
DP/DM/CC over-voltage protection
CC DC withstand voltage: 25V
HBM ESD: 2kV
The IP6529_Q1 features an ultra-compact QFN24 (4×4mm) package, saving space while optimizing thermal performance and interface layout. It is UFCS certified, making it an ideal solution for China’s UFCS fast-charging standard.
IP6529_Q1实物图1
IP6529_Q1实物图2
INJOINIC IP6591_Q1 + IP2727_Q1 Synchronous BUCK-BOOST NMOS Driver with Automotive Fast-Charging IC
IP6591_Q1 is an AEC-Q100 Grade 2 high-efficiency synchronous buck-boost controller for automotive power systems.
Key Highlights
Output: 3V–21V adjustable via I²C or FB voltage divider
Input Range: 5V–36V, compatible with 12V / 24V automotive batteries
Efficiency: Up to 93% (VIN = 12V, VOUT = 5V / 3A)
Protection: CC/CV output, over-current, under-voltage, short-circuit, over-temperature
Package: QFN40L (5 × 5 mm), automotive-grade reliability
Fast-Charging Solution (with IP2727_Q1)
Supports PD3.0 / QC4+ fast charging, up to 100W output
Applications: 12V automotive systems, 5–20V PD fast charge
Full temperature range: –40°C to +105°C, >90% efficiency
Technical Overview
Input: 5V–36V | Output: 3V–21V
Switching frequency: 350 kHz | Output current: 5A
Schematic Diagram:
Working Schematic Diagram of IP6591_Q1 Matched with IP2727_Q1
(Note: It is recommended that the NMOS power transistor with a Vds voltage resistance of more than 30V be adopted for Q1. The resistance and capacitance values of the compensation network composed of CMPI are recommended values and should be adjusted according to actual conditions.)
Automotive PD Charging Solution
The IP6591_Q1 and IP2727_Q1 form a complete automotive USB Type-C PD fast-charging solution.
Wide voltage conversion & protocol handshake: IP6591_Q1 handles voltage conversion; IP2727_Q1 manages PD3.0/QC4+ protocols.
Multi-level PD output: 5V / 9V / 12V / 15V / 20V from 12V lead-acid battery systems.
High performance: Up to 100W output, efficiency >90%, full-temperature operation -40°C to 105°C.
IP6591_Q1+IP2727_Q1实物图1
IP6591_Q1+IP2727_Q1实物图2
IP3622_Q1 - Automotive USB2.0 4-Port Hub Controller
Key features:
1.AEC-Q100 Certified
Grade 2: -40℃ to +105℃
2.USB 2.0 Compliant
Upstream port supports High-Speed (HS) & Full-Speed (FS) traffic
4 downstream ports support HS/FS/Low-Speed (LS) traffic
Control pipe + 1 interrupt pipe
Backward compatible with USB 1.1
3. Advanced Power Management & Low Power Consumption
Supports USB2.0 Link Power Management (LPM) L0/L2 modes
Compliant with USB Battery Charging Spec Rev. 1.2
BC1.2 Charging Downstream Port (CDP) mode supported
BC1.2 Dedicated Charging Port (DCP) mode supported
OTG functionality
USB-to-I²C/SPI/UART/GPIO bridge
Type-C support
Dual Type-C source ports
VBUS discharge capability
4. Configurable Options
EFUSE configuration
External EEPROM for configuration
Boot from SPI flash
5. Reduced BOM Cost
Single external 12 MHz crystal
Integrated upstream 1.5KΩ pull-up & downstream 15KΩ pull-down resistors
Built-in 5V→3.3V & 3.3V→1.2V regulators
Package: 6×6 mm QFN48
Key features:
Automotive-grade: AEC-Q100 Grade 2, -40°C to 105°C
USB 2.0 compliant: 1 upstream, 4 downstream ports; high-speed/full-speed/low-speed support; expands USB interface 1-to-4
Supports CarPlay and CarLife
Advanced power management: LPM, OTG, Type-C support, multi-port battery charging; simultaneous data transfer and PD fast charging (default 5V/3A)
Configurable: EFUSE, external EEPROM, SPI flash boot
Compact & cost-effective: 6×6 mm QFN48, minimal external components
IP3622_Q1 - INJOINIC USB Hub Controller
conclusion
In today's fast-paced mobility landscape, efficient charging defines the journey. Our cutting-edge in-vehicle USB solution combines ultra-fast charging with intelligent protection, transforming every trip. We're pioneering smarter cabin experiences through innovative China-developed chip technology – where performance meets reliability on the road ahead.
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