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AP64200Q

AUTOMOTIVE-COMPLIANT, 40V, 2A SYNCHRONOUS BUCK WITH ADJUSTABLE FREQUENCY

Evaluation Boards and User Guides

AP64200QSP-EVM-User-Guide.pdf (820 KB)

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Description

The AP64200Q is an automotive-compliant, 2A, synchronous buck converter with a wide input voltage range of 3.8V to 40V. The device fully integrates a 150mΩ high-side power MOSFET and an 80mΩ low-side power MOSFET to provide high-efficiency step-down DC-DC conversion.

The AP64200Q device is easily used by minimizing the external component count due to its adoption of peak current mode control.

The AP64200Q design is optimized for Electromagnetic Interference (EMI) reduction. The device has a proprietary 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 AP64200Q 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.

Feature(s)

AEC-Q100 Qualified for Automotive Applications
- Device Temperature Grade 1: -40°C to +125°C TA Range
VIN: 3.8V to 40V
Output Voltage (VOUT): 0.8V to VIN
2A Continuous Output Current
0.8V ± 1% Reference Voltage
25µA Low Quiescent Current (Pulse Frequency Modulation)
Adjustable Switching Frequency: 100kHz to 2.2MHz
External Clock Synchronization: 100kHz to 2.2MHz
Up to 88% Efficiency at 5mA Light Load
Proprietary Gate Driver Design for Best EMI Reduction
Frequency Spread Spectrum (FSS) to Reduce EMI
Low-Dropout (LDO) Mode
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 AP64200Q 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/

Application(s)

Automotive Power Systems
Automotive Infotainment
Automotive Instrument Clusters
Automotive Telematics
Automotive Lighting Control
Advanced Driver Assistance Systems

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP)	Automotive
Type	Buck
Minimum Input Voltage (V)	3.8
Maximum Input Voltage (V)	40
Output Current (A)	2
Minimum Output Voltage (V)	0.8
Maximum Output Voltage (V)	VIN
Quiescent Current Typ (µA)	25
Shutdown Current Typ (µA)	1
Frequency Typ (kHz)	100 to 2200
HS RDS(ON) (mΩ)	150
LS RDS(ON) (mΩ)	80
Features	Enable, Light Load Efficiency, Soft-start Fixed, Frequency Adjustable, External Clock Synchronization, External Loop Compensation, UVLO Adjustable, Frequency Spread Spectrum, OVP, Overcurrent Protection, Thermal Shutdown, Synchronous Rectification