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发布者:来自网络 发布时间:2016-11-25 阅读:372次    关键字: type-c
CY2823-三合一(DC/DC+Type-C+QC2.0)车用快速充电识别芯片


CY2823-三合一(DC/DC+Type-C+QC2.0)车用快速充电识别芯片

CY2823-A Car Charger Chip with DC/DC and Type-C+QC2.0 Capability DataSheet

GENERAL DESCRIPTION
    CY2823 is an USB Car Charger which integrates a DC/DC converter and a Type-C+ QC 2.0 charger decoder together. For the DC/DC converter, it covers a wide input voltage and provides high efficiency current mode control during the step – down process for fast loop response and easy compensation. For the charger ID capability, this device has different charger types including emerging Type-C, QC 2.0 Class A, BC 1.2, DCP modes, and legacy devices.
    The DC/DC converter of CY2823 provides a 3A, current-mode step-down converter with an integrated high-side switch. It operates with a wide input voltage from 4.5V to 36V, and the PWM switching frequency fixed at 420kHz internally. Meanwhile, it performs a highly efficient control for fast loop response and easy compensation by automatically entering into PSM mode during light load. Also, cycle-by-cycle current limiting and thermal shutdown are provided for fault condition protections. An internal 2ms soft-start design reduces input start-up current and prevents the output voltage and inductor current from overshooting during power-up.
    The detection procedure of CY2823 firstly performs Type-C detection ( for CY2823-12L) based on USB Type-C specification v1.1 for Downstream Facing Port. And then, USB BC 1.2 DCP mode is enabled. After that, the legacy (500mA USB 2.0, 900mA USB 3.0, 2.4A for D+/D- at 2.7V) detection is performed. In addition, QC detection is implemented with class A capability, where VBUS can support 5V, 9V, or 12V according to QC protocol handshake results.

FEATURES
• 4.5V to 36V Input Voltage Range
• 3A Continuous Output Current
• 100m ohm Internal Power MOSFET Switch
• Fixed 420kHz Switching Frequency
• Cycle-by-Cycle Current Limit
• Over-Current/ Temperature Protection
• Thermally Enhanced Packages
• USB Type-C v1.1 Cable Detect
• Built-in discharge path for QC & Type-C
• Support QC 2.0 Class A: 5V, 9V, and 12V
• Support BC1.2 DCP mode
• Support Legacy Devices Fast Charging
• Automatic Selection for different mode

APPLICATIONS
• Car Chargers
• Cigarette Lighter Adaptor (CLA)
• Power bank Charging port

PACKAGES
• SOP-8EP
• QFN-12L

Two Port Car Charger_Type C + Type A
CY2823-12L for Type C + CY2823-8L for Type A

CY2823-12L for USB Type C Car Charger

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