CH234S 多快充协议芯片
日期:2023-2-13CH234S,ESOP-10 USB PD 等多快充协议芯片 CH234S
CH234 单芯片集成 USB PD 等多种协议,支持 USB PD,BC1.2 等快充协议,支持隔离 AC-DC 多档恒压
电源管理,支持非隔离 DC-DC 电源管理,高集成度,外围精简,集成 VBUS 放电功能,并且提供过温、过
压、过流保护。可广泛应用于交流电源适配器、车载充电器、UPS、移动电源等各类场合。
2、功能特点
支持 5V 至 12V 输入电压
支持 USB PD,BC1.2 等多种快充协议
支持 Type-C 正反插检测与自动切换
支持隔离 AC-DC 多档恒压电源管理,支持非隔离 DC-DC 电源管理
单芯片高集成度,外围精简,成本低
内置过流保护模块 OCP、过压保护模块 OVP、超温保护模块 OTP
通过 USB PD 认证,TID:2288
3、应用场合
交流电源适配器
车载充电器
UPS
移动电源
CH234 支持 USB PD,BC1.2 等多种快充协议,支持 AC-DC 和 DC-DC 恒压输出模式,集成 VBUS 放电功
能,并且提供过温、过压、过流保护等。
5.2. 供电引脚:VHV 和 VDD
VHV 引脚为芯片的高压电源检测引脚,外部连接至电源系统输出端。
VDD 引脚为芯片的工作电源输入引脚,需要串联 430Ω~680Ω电阻至 VHV 引脚并对地连接 1uF 退耦
电容。较小的串联电阻取值将增加静态功耗但供电能力较强,较大的串联电阻取值将减小静态功耗但供
电能力较弱。
5.3. 电源管理
CH234 支持 AC-DC 和 DC-DC 的恒压电源管理,FB 引脚为电源管理的反馈驱动端。CH234 配合 AC-DC 电
源工作时,FB 引脚可以直接驱动光耦阳极(图 6.1),也可以驱动 431(图 6.2)。CH234 配合 DC-DC 电
源工作时,需要将 FB 引脚连接至 DC-DC 的反馈引脚,并配置 DC-DC 的默认输出电压为 5.2V 左右。
5.4. VBUS 电源输出控制
GATE 引脚为内部上拉至 VHV 的开漏输出引脚,连接至 VBUS 电源输出 PMOS 的栅极,用于控制 VBUS 电
源输出。当未检测到设备接入时,GATE 引脚为高电压,PMOS 关断;当检测到设备接入后,GATE 引脚为低
电压,此时 PMOS 被导通,向接入的设备进行供电。
5.5. 保护功能
CH234 具有过温保护功能,当芯片温度达到阈值温度(典型值为 130℃)时,CH234 会关断输出 PMOS,
停止向设备供电,同时将电源系统电压调节至 5V,直到所有故障信号均消失后,重新检测设备接入。
CH234 具有过压保护功能,当 VHV 引脚达到阈值电压(典型值为 14V)时,CH234 会关断输出 PMOS,
停止向设备供电,同时将电源系统电压调节至 5V,直到所有故障信号均消失后,重新检测设备接入。
CH234 具有过流保护功能,当检测到输出电流超过门限电流时,CH234 会关断输出 PMOS,停止向设备
供电,同时将电源系统电压调节至 5V,直到所有故障信号均消失后,重新检测设备接入。
过流保护的门限电流会根据当前电压档位实时调整,典型值为电流标称值的 120%,例如 5V@3A 对应
的门限电流的典型值为 3.6A。
5.6. VBUS 引脚放电功能
VBUS 引脚用于泄放 VBUS 上的能量,需连接至 Type-C 接口上的 VBUS,当 VBUS 电压过高时 CH234 会
打开 VBUS 放电功能,直到 VBUS 电压处于正常电压。
5.7. 输出电流检测
ISEN 引脚用于输出电流检测,以提供过流保护功能。
5.8. CC1/CC2 引脚
CC1/CC2 引脚用于设备接入检测、PD 协议握手,支持 Type-C 协议定义的 3A 的电流广播。
CC1/CC2 引脚的 ESD 在 4KV 左右。
5.9. UD+/UD-引脚
UD+/UD-引脚用于 BC1.2 等快充协议的握手和通讯。
UD+/UD-引脚的 ESD 在 4KV 左右。
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050-5800-0 |
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617-00012-01 |
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UC3847N/R |
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UCC3580N-1 |
UCC3580N-4 |
UCC28517N |
UC3854N-F |
TMP47C66P |
UC3904N |
UCC3583N |
UC3856N |
UC3832N |
UC495ACN |
UC3865N |
UC3543N |
UCC2580N-4 |
UCC3581N |
UC494ACN |
UC494CN |
UC494AN |
UC494N |
UC3838AN |
UC3838N |
UC3708NE |
UC2524AN |
UC2854AN |
UC2854BN |
UC3706N |
UC3706BN |
UC3717N |
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NE570N |
NE571N |
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MAX232N |
MAX232IN |
MAX232CPE |
ICL232IPE |
ICL232CPE |
HIN232CP |
SP232ACP |
SP232AEP |
ADM232LAN |
ADM232LJN |
DG508ACJ |
ADG508AKN |
HI3-508A-5 |
PCD5101P |
UC3818N |
MC145LC436P |
RA9034Y |
ULN2813A |
ULN2814A |
UDN2544B |
ULN2823A |
ULN2952B-2 |
ULN2952B |
ULN2952B-2BU |
ULN2082A |
UDN6116A |
UDN6116A-2 |
UCN5813B |
ULN2054A |
ULN2401A |
ULN2128 |
ULN3862A |
UCN5891A |
ULN8194A |
ULN2075B |
ULN2075 |
ULN2075NE |
ULN3803A-2B |
ULN3803A-3A |
ULN3803A-3B |
ULN2066B |
ULN2066NE |
ULN2077B |
UDN2985A |
ULN8130A |
T5620CP |
NJM3770AD3 |
MIC5810BN |
SSI207CP |
CS203-CP |
ER-1450 |
U3060M |
U3042M |
RU5620ANP-020 |
MF6CN-100 |
IM6508IJE |
1560C |
LBR050AC |
T7501PC |
T7500PC |
UC2823AN |
IH5015CPE |
MPQ3762 |
MC14572UBCP |
MC145416P |
SPG8640CN |
HMS87C1202A |
UDN5707A |
LT1088CD |
LM711CN |
CA3088E |
CA2111AE |
CA3089E |
CA3146AE |
CA3300CE |
CA0007AD |
CA3139GMI |
CA3450E |
CA3137EMI |
CA3141E |
CA3127E |
CA3189E |
CA3065E |
CA3121E-G |
CA1524E |
CA3102E |
CA2524EX |
CA2524E |
CA3096CE |
CA3086 |
CA723CE |
CA3083 |
CA3183E |
CA3304E |
CA9840 |
ULN3810A |
ULN5841A |
ULN2015A |
ULN2032A |
ULN2081A |
ULN3750B |
ULN2111A |
UDN2541B |
UDN2841B |
UDN2841NE |
UDN2841B-1 |
ULN3859A |
ULN2455A |
ULN2801A |
ULN2212B |
UCN5824B |
ULN2068B |
ULN2068NE |
ULN2024A |
ULN2064B |
ULN2064NE |
ULN3839A-1 |
73M450-IP |
ULN2802A |
ULN2805A/ |
UCN5821A |
MIC5821BN |
ULN8131A |
ULN2069B |
ULN2071B |
ULN2055A |
ULN2001AN |
ULN2001A |
ULN8160A |
ULN3883A |
ULN3809A |
ULN3838-1 |
ULN3838-2 |
ULN2013A |
ULN3834A-2 |
ULN3834A-1 |
UCN5895A |
UCN2840N |
ULN2065B |
ULN2065NE |
ULN2002AN |
ULN2002A |
ULN2023A |
ULN2074B |
ULN2074NE |
ULN2083A-1 |
ULN2083A |
PT2128A-C54 |
DMD5802 |
DBL5018 |
MT8972AE |
MT8880AE |
2135CP |
XR2135CP |
PBD3517 |
CY7C190-25PC |
MAD1108P |
MX7224KN |
MAX1482CPD |
MAX491CPD |
MAX491EPD |
MX7575JN |
MAX239CNG |
MAX8213ACPE |
MAX450CPD |
MAX421CPD |
MX7543JN |
ICM7556IPD |
MAX3089CPD |
MX7541KN |
MAX235CPG |
MAX235EPG |
MAX204CPE |
MAX352CPE |
MAX454CPD |
MAX435CPD |
AD7541KN |
MAX399CPE |
MAX739CPD |
MX7576JN |
MAX693EPE |
MAX693CPE |
MAX912CPE |
MAX912EPE |
MAX414CPD |
MAX736CPD |
MAX394CPP |
MAX1488ECPD |
MX7574JN |
MAX202ECPE |
MAX230CPP |
MAX791EPE |
MAX791CPE |
MAX334CPE |
MAX208CNG |
MAX625CNG |
MAX338CPE |
MAX797EPE |
ICL7641ECPD |
MAX237CNG |
MAX529CPP |
MAX509ACPP |
MAX737CPD |
MAX695CPE |
MAX695EPE |
MAX359CPE |
MAX236CNG |
MAX358CPE |
MAX489CPD |
MAX621CPN |
MAX328CPE |
ICL7622DCPD |
MAX3223ECPP |
MAX333CPP |
MAX713CPE |
MAX243CPE |
MAX508AEPP |
MAX308CPE |
MAX8214AEPE |
MAX8214ACPE |
MAX203ECPP |
MAX455CPP |
ICL7652CPD |
MAX1489ECPD |
MAX231CPD |
MAX233CPP |
MAX238CNG |
MAX234CPE |
MAX512CPD |
MAX500BCPE |
DG211CJ |
DG212CJ |
DG300ACJ |
DG201ACJ |
UA711CN |
LIU01FP |
SA5775AN |
SA5777AN |
SN65ALS180N |
CY7C190-18PC |
MC14011BCP |
AM29841PC |
HM6268P-35 |
HM6208HP-35 |
HM6267LP-55 |
AM29821PC |
MM1311A |
MB81C84A-35 |
2510D |
HM6788P-25 |
HM6788P-30 |
HM6168HP-55 |
221-301-00 |
221-429 |
221-234 |
16N20-0020 |
16N16-001R1.0 |
16N16-001 R1.0 |
16016-001VG |
MTV030-39 |
FT13801A |
CY7C166-20PC |
CY7C291AL-35PC |
SI9114DJ |
SI9114ADJ |
DS14C232CN |
PBL3766R2 |
MC34004L |
MC34004P |
25 |
UDN7180A |
UDN6138A |
COM81C17 |
TCM5089ANS |
TP5089N |
TCM29C13N |
MT8880CE |
MC34129P |
HM6287LP-70 |
SMCX211F |
T5620CN |
T5683 |
T445B |
RYT121014/4 |
RYT121 014/4 |
NJ8820BA |
RA7419 |
CP82C88 |
TP3401J 3.11 |
DG390ACK |
I1-390-5 |
DS2186 |
PBM9837 |
MC44301P |
L4A0658 |
221E16003 |
L4A0660 |
221E15902 |
22059177 |
J22059177 |
LMC660CN |
DLS7-111 |
DLS7-112 |
DS7820AJ |
DS7820J |
MC10106L |
MC10114L |
MC10103L |
MC10192L |
10101DC |
MC10101L |
MC10105L |
MC10131L |
LM339J |
MC10125LD |
MC10121L |
MC10117L |
MC10115L |
MC10175L |
MC10161L |
MC10102L |
MC10109L |
MC10158L |
MC10113L |
MC10170L |
SSM2110 |
ULQ2024RBU |
CJVTV104 |
SIL140B |
08G5158 |
C85731 |
NE556F |
SA5419EPA |
NMA5419PQK |
BMA5416PQK |
JMA5416PQK |
PBL3881 |
PMA5419PQK |
JMA5416PLACA |
GMA5416PQK |
PBL3786/2 |
HT48R50A-1 |
MM1454 |
221-379 |
NE590N |
DBL1019 |
5S039 |
HT6513B |
HT6523 |