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reference designSC81530Q | Demoboard SC8153XQ_EVM_C163_V1.5

Southchip SC81530Q | Demoboard SC8153XQ_EVM_C163_V1.5

36V/3A, Buck Converter with USB Charging Port Supporting CDP and Type-C DFP Mode, AEC-Q100 Qualified

Overview

TopologyBuck Converter
Input voltage3.8-36 V
Switching frequency200-2200 kHz
Output 120 V / 3 A
IC revisionV1.0.0

Description

SC81530Q is a USB Type-C and BC1.2 charging port controller that includes a synchronous step-down converter. It integrates a single USB current-limit switch and achieves 3A of output current across a wide input supply range, with excellent load and line regulation. SC81530Q integrates current-limited USB switch, which supports CDP mode for BC1.2, USB Type-C DFP mode and Type-A mode (CC1=100kΩ). SC81530Q also integrates high bandwidth analog switches for DP and DM pass-through. Fault condition protections include hiccup current limiting, output over-voltage protection (OVP), DP/DM/CC1/CC2 short-to-battery protection, and thermal shutdown. The SC81530Q is available in 22-pin 4mm x 4mm Wettable packages.

Features

  • AEC-Q100 qualified for automotive applications: Temperature Grade 1: TA range: -40°C to 125 °C
  • Passes Apple MFI certification test
  • USB-IF Type-C certificated
  • Integrates synchronous Buck converter:
  • Wide 3.9V to 36V continuous operating input range, 40V ABS voltage
  • Adjustable switching frequency from 200kHz to 2.2MHz
  • Spread Spectrum option
  • Synchronize to external clock
  • Integrates 52.5mΩ/30.5mΩ switching power FETs
  • Selectable Forced PWM Operation and Automatic PFM/FPWM operation
  • Integrates multiple protocols:
  • Supports BC1.2 CDP mode
  • Supports USB Type-C DFP mode
  • Integrates 1000MHz bandwidth USB2.0 data switch with OVP
  • Accurate USB switch current limit for Type C & Type A
  • Integrates 23mΩ RDS(ON) USB switch
  • 145°C Internal Load-Shedding entry temperature
  • Line drop compensation
  • Independent USB on/off control
  • Hiccup current limit for Buck and USB switch
  • USB_OUT, DP/DM, CC1/CC2 Pins short to battery protection
  • EN shutdown discharge function
  • Fault indication for USB OCP, OVP(USB_IN), OTP, USB_OUT/DP/DM/CC1/CC2 short to battery,
  • ±8kV IEC 61000-4-2 contact discharge ESD rating for CC1/CC2/DP/DM pins
  • ±15kV IEC 61000-4-2 air discharge ESD rating for CC1/CC2/DP/DM pin

Typical applications

  • Automotive USB Type-C Charging Ports, Automotive Charging Downstream Ports, Automotive Head Unit

More information

Parts approved by Southchip

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC max.(mΩ)
fres(MHz)
Mount
SamplesAvailability & Sample
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74437336047
SPECWE-LHMI SMT Power Inductor, 4.7 µH, 4.35 A
Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-LHMI SMT Power Inductor
Inductance4.7 µH
Performance Rated Current4.35 A
Saturation Current @ 10%3.85 A
Saturation Current @ 30%7.6 A
DC Resistance53 mΩ
Self Resonant Frequency25 MHz
MountSMT 
–Check availability
74437368047
SPECWE-LHMI SMT Power Inductor, 4.7 µH, 9.4 A
Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-LHMI SMT Power Inductor
Inductance4.7 µH
Performance Rated Current9.4 A
Saturation Current @ 10%11.7 A
Saturation Current @ 30%26 A
DC Resistance15.5 mΩ
Self Resonant Frequency16 MHz
MountSMT 
–Check availability