ACT4529
40 V, 3 A, Wide Input Range, High-Efficiency Step-Down Converter with QC 2.0, USB Auto-Detect and USB-PD
Key Features
- Quick Charge 2.0 certified by Qualcomm® and UL
- UL Certificate No. 4787083099-1
- Passes Apple MFi test
- 40 V input voltage surge
- 4.5 to 36 V operational input voltage
- 5.1 / 9.1 / 12.1 V output with +/- 1% accuracy
- Up to 3.0 A output current
- Constant current regulation limit
- QC2.0 decoding + USB auto-detect + USB-PD Type-C support
- Supports Apple 2.4 A, Samsung and BC1.2
- Hiccup mode protection at output short
- > 90% efficiency at full load
- 0.5 mA low standby input current
- 5.7 / 10.1 / 13.5 V output over-voltage protection for 5.1 / 9.1 / 12.1 V Outputs
- Cord voltage compensation
- Meets EN55022 Class B radiated EMI standard
- 8 kV ESD HBM protection on DP and DM
Qorvo's ACT4529 is a wide input voltage, high efficiency step-down DC/DC converter that operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode.
ACT4529 has built-in QC2.0 decoding to provide 5.1 / 9.1 / 12.1 V outputs as requested by attached portable devices. It also supports Apple, Samsung and BC1.2 devices to charge at full current rate. The product has an interface for USB-PD control via a tri-state digital pin. Vout is 5.1 V if this pin is floating, Vout is 9.1 V when this pin's voltage is less than 0.8 V and Vout is 12.1 V when this pin's voltage is more than 2.0 V.
The product has accurate output current limits under constant current regulation to meet MFi specification. It provides up to 3.0 A output current at 125 kHz switching frequency. ACT4529 utilizes an adaptive drive technique to achieve good EMI performance while maintaining greater than 90% efficiency at full load for mini-size CLA designs. ACT4529 also has output short circuit protection with hiccup mode. The average output current is reduced to below 6 mA when output is shorted to ground. Other features include output over-voltage protection and thermal shutdown.
ACT4529 is available in a SOP-8EP package and requires very few external components for operation.
Typical Applications
- Car Chargers
- Cigarette Lighter Adapters (CLAs)
- Rechargeable Portable Devices
- CV/CC Regulation DC/DC Converters
Product Categories
Application Categories
| Topology | Buck |
| Min Input Voltage(V) | 6 |
| Max Input Voltage(V) | 36 |
| Max Output Current(A) | 3.0 |
| Pin Count | 8 |
| Operating Junction Temperature(C) | -40 to 150 |
| Frequency(kHz) | 125 |
| ActiveCharge™ with Qualcomm QC 2.0 | Yes |
| AEC-Q100 | No |
| Cable Compensation | Yes |
| Sensorless CC Control | Yes |
| Package Type | SOP-8EP |
| Package(mm) | 5.0 x 6.0 |
| RoHS | Yes |
| Lead Free | Yes |
| Halogen Free | Yes |
| ITAR Restricted | No |
| ECCN | EAR99 |
ACT4529EVK Evaluation Kit
(Note: ACT4529, ACT4529M, ACT4530 and ACT4530M can all be evaluated with this kit)
ACT4529EVK1 Evaluation Tool User Guide
The is a complete, stand-alone USB-PD and QC2.0 car charger solution. It is built with an automotive car charger form factor to show performance in a real form factor application. The EVK contains the high efficiency ACT4529 step-down DC/DC converter that operates in either CV(Constant Output Voltage) mode or CC (Constant Output Voltage) mode.
The EVK features a USB Type C output connector with USB-PD, QC2.0, and USB Auto Detect decoding protocols.
Decoding is implemented with an on-board FUSB302TMPX USB Type-C controller and STM32F030F4P6 MCU.
The EVK provides up to 3.0A output current at 125kHZ switching frequency. It operates from Vin=12V to 36V and provides an output voltage of 5.1V, 9.1V, or 12.1V depending on the load's requested voltage. It charges Samsung and BC1.2 charging protocols at full charge current.
Gerber files are available to minimize time-to-market for applications that want to use the EVK as an end product.
EA4529HY-T1011EVK Evaluation Kit
(Note: ACT4529, ACT4529M, ACT4530 and ACT4530M can all be evaluated with this kit)
The EA4529HY-T1011EVK is a QC2.0 car charger solution. The EVK contains a high efficiency step-down DC/DC converter that operates in either CV (Constant Output Voltage) mode or CC (Constant Output Voltage) mode. The EA4529HY-T1011EVK provides up to 2.4A output current at 125kHZ switching frequency. It operates from Vin = 6V to 32V and provides an output voltage of 5V, 9V, or 12V depending on the load's requested voltage.
Gerber files are available to minimize time-to-market for applications that want to use the EVK as an end product.
The User Guide describes the characteristic and operation of the Qorvo EA4529YH-T1011 evaluation kit (EVK). It provides setup and operation instructions, schematic, layout, BOM, and test data.
This EVK demonstrates the ACT4529YH-T1011 version of the IC. Other ACT4529YH-Txxxx versions, including automotive versions, can be evaluated on this EVK by replacing the IC and any other necessary components.