Diodes Incorporated AP3917D | Demoboard AP3917D EV2

Description

AP3917D is an off-line universal AC Voltage input step-down regulator that provides accurate constant voltage (CV), outstanding low standby power, light loading efficiency and dynamics performance. The chip supports non-isolated buck and buck-boost topology, and also isolated flyback topology. The main applications are for cost-effective home appliance power. Working with a single winding inductor and integrating a 700V MOSFET when used in buck topology, the BOM cost is very low. The AP3917D EV2 Evaluation Board contains two outputs specifications: 18V250mA and 5V50mA, with both non-isolations. The 18V250mA is buck topology and the other is flyback. The two topologies share a two-winding transformer. The feedback circuitry samples 18V output. The user’s guide provides good design example for dual output power applications in home appliance power.

Features

• Universal 85V to 264V VAC Input
• Internal MOSFET 700V (Rds(on) 10Ω max. @25℃)
• Maximum output Current: 370mA typ.@5V output
• Low Standby Power Consumption
• High Light Loading Efficiency and average efficiency can meet DOE IV and CoC V5 Tier 2
• Frequency Modulation to suppress EMI to meet EN55032 and FCC part 15 class B
• Rich Protection including: OTP, OLP, OLD,SCP
• Extremely low system component count.
• Totally Lead-free & Fully RoHS Compliant (SO-7)
• Halogen and Antimony Free. “Green” Device

Typical applications

• Auxiliary Power to IoT Devices
• Non-isolated and isolated home appliances including: AC fans, rice cooker, air conditioner, coffee machines, soy milk machines, etc.

More information

• Datasheet
• IC product information