Diodes AP63201WU-EVM Manual

32v, 2a, synchronous dc/dc buck converter with enhanced emi reduction

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DESCRIPTION
The AP63201 is a 2A, synchronous buck
converter with a wide input voltage range of
3.8V to 32V and fully integrates a 125mΩ
high-side power MOSFET and a 68mΩ low-
side power MOSFET to provide high-
efficiency step-down DC/DC conversion.
The AP63201 device is easily used by
minimizing the external component count
due to its adoption of peak current mode
control
along
with
compensation network.
The AP63201 has optimized designs for
Electromagnetic
reduction.
The
Frequency Spread Spectrum (FSS) with a
FEATURES
VIN 3.8V to 32V
2A Continuous Output Current
0.8V ± 1% Reference Voltage
22µA Ultralow Quiescent Current
(Pulse Frequency Modulation)
500kHz Switching Frequency
Supports Pulse Width Modulation
(PWM)
Proprietary Gate Driver Design for
Best EMI Reduction
Frequency Spread Spectrum
(FSS) to Reduce EMI
AP63201WU-EVM
Document number: Rev. 1 - 0
its
integrated
Interference
(EMI)
converter
features
www.diodes.com
32V, 2A, Synchronous DC/DC Buck Converter
With Enhanced EMI Reduction
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. It also has a proprietary gate
driver scheme to resist switching node
ringing without sacrificing MOSFET turn-on
and turn-off times, which further reduces
high-frequency radiated EMI noise caused
by MOSFET switching.
The device is available in a low-profile,
TSOT26 package.
Low-Dropout (LDO) Mode
Precision Enable Threshold to
Adjust UVLO
Protection Circuitry
o Undervoltage Lockout
(UVLO)
o Cycle-by-Cycle Peak
Current Limit
o Thermal Shutdown
1 of 8
AP63201WU-EVM
June 2019
© Diodes Incorporated

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Summary of Contents for Diodes AP63201WU-EVM

  • Page 1 Supports Pulse Width Modulation (PWM) Current Limit  o Thermal Shutdown Proprietary Gate Driver Design for Best EMI Reduction  Frequency Spread Spectrum (FSS) to Reduce EMI 1 of 8 AP63201WU-EVM June 2019 www.diodes.com © Diodes Incorporated Document number: Rev. 1 - 0...
  • Page 2: Functional Block

    -0.3 to +35.0 (DC) Supply Voltage -0.3 to +40.0 (400ms) -1.0 to VIN + 0.3 (DC) Switch Node Voltage -2.5 to VIN + 2.0 (20ns) 2 of 8 AP63201WU-EVM June 2019 www.diodes.com © Diodes Incorporated Document number: Rev. 1 - 0...
  • Page 3: Recommended Operating Conditions

    RECOMMENDED OPERATING CONDITIONS Symbol Parameter Unit Supply Voltage Operating Ambient Temperature Range °C Operating Junction Temperature Range +125 °C EVALUATION BOARD Figure 2. AP63201WU-EVM 3 of 8 AP63201WU-EVM June 2019 www.diodes.com © Diodes Incorporated Document number: Rev. 1 - 0...
  • Page 4 32V, 2A, Synchronous DC/DC Buck Converter With Enhanced EMI Reduction QUICK START GUIDE The AP63201WU-EVM has a simple layout and allows access to the appropriate signals through test points. To evaluate the performance of the AP63201WU, follow the procedure below: 1.
  • Page 5: Setting Output Voltage

    744 393 440 33 744 393 440 33 744 393 460 68 744 393 461 00 744 770 915 0 Table 2. Recommended Inductors 5 of 8 AP63201WU-EVM June 2019 www.diodes.com © Diodes Incorporated Document number: Rev. 1 - 0...
  • Page 6: Evaluation Board Schematic

    AP63201WU-EVM 32V, 2A, Synchronous DC/DC Buck Converter With Enhanced EMI Reduction EVALUATION BOARD SCHEMATIC C6~8 C1~3 Figure 3. AP63201WU-EVM Schematic BILL OF MATERIALS for AP63201WU-EVM (V =5V) Item Value Type Rating Description Description X5R/X7R, 10uF Input CAP Ceramic/1206 X5R/X7R, Würth PART 0.1uF...
  • Page 7: Typical Performance Characteristics

    Figure 4. Efficiency for VIN=12V, VOUT= 5.0V Vin=12V Vo=5V 1000 1500 2000 Input Current(mA) Figure 5. Output Ripple for VIN=12V, VOUT=5.0V, IOUT=2A VOUT_AC (20mV/div) IL (1A/div) VSW (10V/div) 5µS/div 7 of 8 AP63201WU-EVM June 2019 www.diodes.com © Diodes Incorporated Document number: Rev. 1 - 0...
  • Page 8 Any Customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated website, harmless against all damages.

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