DIODES AP64501QSP-EVM Evaluation Boards User Manual
- June 17, 2024
- DIODES
Table of Contents
DIODES AP64501QSP-EVM Evaluation Boards
Product Information
Specifications
- Model : AP64501QSP-EVM
- Input Voltage Range : 3.8V to 40V
- Output Current : 5A
- Features :
- Programmable Soft-Start Time
- Modulation) 570kHz Switching Frequency
- Up to 85% Efficiency at 5mA Light Load
- Low-Dropout (LDO) Mode
- Package : SO-8EP
Product Usage Instructions
Quick Start Guide
- Connect a power supply to the input terminals VIN and GND. Set VIN to 12V.
- Connect the positive terminal of the electronic load to VOUT and the negative terminal to GND.
- For Enable, place a jumper at JH6 to ON position to connect the EN pin to VIN through 100K resistors or leave it OPEN. Jump to the OFF position to disable IC.
Troubleshooting Tips
If you encounter any issues during operation, ensure that all connections are secure and the input voltage is within the recommended operating range.
Maintenance
Regularly inspect the evaluation board for any signs of damage or wear. Clean the board gently with a soft, dry cloth if needed.
FAQ
- Q: What is the recommended operating voltage for the AP64501QSP-EVM?
- A : The recommended operating voltage range is from 3.8V to 40V.
- Q: How can I enable or disable the IC on the evaluation board?
- A : To enable the IC, place a jumper at JH6 to ON position to connect EN pin to VIN through a 100K resistor. To disable the IC, jump to the OFF position.
DESCRIPTION
The AP64501Q is an automotive-compliant, 5A, synchronous buck converter with a
wide input voltage range of 3.8V to 40V. The device fully integrates a 45mΩ
high-side power MOSFET and a 20mΩ lowside power MOSFET to provide high-
efficiency step-down DC-DC conversion.
The AP64501Q device is easily used by minimizing the external component count
due to its adoption of peak current mode control.
The AP64501Q design is optimized for Electromagnetic Interference (EMI) reduction. The device has a proprietary
FEATURES
- AEC-Q100 Qualified with the Following Results
- Device Temperature Grade 1 : -40°C to +125°C TA Range
- Device HBM ESD Classification Level H2
- Device CDM ESD Classification Level C5
- VIN : 3.8V to 40V
- 5A Continuous Output Current
- 0.8V ± 1% Reference Voltage
- 25µA Low Quiescent Current (Pulse Frequency Modulation)
- 570kHz Switching Frequency
- Programmable Soft-Start Time
- Up to 85% Efficiency at 5mA Light Load
- Proprietary Gate Driver Design for Best EMI Reduction
- Frequency Spread Spectrum (FSS) to Reduce EMI
- Low-Dropout (LDO) Mode
APPLICATIONS
- Automotive Power Systems
- Automotive Infotainment
- Automotive Instrument Clusters
- Automotive Telematics
- Automotive Lighting Control
- Advanced Driver Assistance Systems
gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off times, which reduces high-frequency radiated EMI noise caused by MOSFET switching. The AP64501Q also features Frequency Spread Spectrum (FSS) with a switching frequency jitter of ±6%, which reduces EMI by not allowing emitted energy to stay in any one frequency for a significant period of time.
The device is available in an SO-8EP package.
- Precision Enable Threshold to Adjust UVLO
- Protection Circuitry
- Undervoltage Lockout (UVLO)
- Output Overvoltage Protection (OVP)
- Cycle-by-Cycle Peak Current Limit
- Thermal Shutdown
- Totally Lead-Free & Fully RoHS Compliant
- Halogen and Antimony Free. “Green” Device
- The AP64501Q is suitable for automotive applications requiring specific change control; this part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities.
- https://www.diodes.com/quality/product-definitions/
TYPICAL APPLICATIONS CIRCUIT
RECOMMENDED OPERATING CONDITIONS
EVALUATION BOARD
QUICK START GUIDE
The AP64501QSP-EVM has a simple layout and allows access to the appropriate signals through test points. To evaluate the performance of the AP64501QSP, follow the procedure below:
- Connect a power supply to the input terminals VIN and GND. Set VIN to 12V.
- Connect the positive terminal of the electronic load to VOUT and negative terminal to GND.
- For Enable, to enable IC, place a jumper at JH6 to “ON” position to connect EN pin to VIN through 100KΩ resistor or leave it OPEN. Jump to “OFF” position to disable IC.
- The evaluation board should now power up with a 5.0V output voltage.
- Check for the proper output voltage of 5.0V (±1%) at the output terminals VOUT and GND. Measurement can also be done with a multimeter with the positive and negative leads between VOUT and GND.
- Set the load to 5A through the electronic load. Check for the stable operation of the SW signal on the oscilloscope. Measure the switching frequency.
MEASUREMENT/PERFORMANCE GUIDELINES:
- When measuring the output voltage ripple, maintain the shortest possible ground lengths on the oscilloscope probe. Long ground leads can erroneously inject high-frequency noise into the measured ripple.
- For efficiency measurements, connect an ammeter in series with the input supply to measure the input current. Connect an electronic load to the output for output current.
SETTING OUTPUT VOLTAGE
Table 1 shows a list of recommended component selections for common output voltages.
EVALUATION BOARD SCHEMATIC
PCB TOP LAYOUT
PCB BOTTOM LAYOUT
AUTOMOTIVE BILL OF MATERIALS for AP64501QSP-EVM @VOUT=5V
TYPICAL PERFORMANCE CHARACTERISTICS
IMPORTANT NOTICE
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