【经验】解析圣邦微Buck-Boost转换器SGM62110的设计注意事项

时间： 2022-10-20 来源：世强

技术问答

SGM62110/SGM62111是一款内置了四开关管的低功耗Buck-Boost转换器。2.2V至5.5V输入电压，1.8V至5.2V输出电压，具有很高的转换效率，在3.3V输出，10mA至2.5A负载段，可达到超过90%的转换效率。WLCSP-2.21×1.40-15B小封装，有利于PCB布局，低静态电流18μA，在低功耗的应用上颇具优势，可满足大多数电池供电的小型化设备，如TWS耳机应用。SGM62110/1外围电路简单，仅需配置3个电容和1个电感即可工作，具有I²C接口，输出电压可通过编程控制，内置OTP、OVP、OCP、UVLO等保护措施。本文将解析该系列产品的设计注意事项。

应用电路图

如下为应用设计经验：

1、本器件有I²C接口，可用于编程配置输出电压。在RANGE=0，VSEL=low的情况下，输出电压默认为3.3V输出。

2、对于大多数应用，输入电容可以用10μF，如果芯片离供电端比较远，则建议使用更大的如47μF的电解电容或者钽电容。

3、电感值通常选用0.47μH，为获得更好的效率，建议采用较低DCR的电感。在包括瞬态响应的最恶劣工况下，电感额定饱和电流必须至少高于最大峰值电流的20%。通常最恶劣工况发生在Boost模式，在最低的输入电压、最高的输出电压和最大的负载下工作。

4、输出电容，建议使用两个22μF，6.3V的陶瓷电容，可以满足大多数应用，为了减少高频噪声，可以再并一个0.1μF的陶瓷电容，尽可能靠近VOUT和GND引脚。

5、布局在DC/DC电源的所有开关模式中起着重要作用。不合理的布局可能导致EMI性能差、设备不稳定和潜在的器件问题。输入电容、输出电容和电感应尽可能靠近IC。SGM62110/SGM62111设计有单独的电源地和模拟地，应尽量减少对敏感模拟电路的接地噪声影响，使用单独的接地线连接反馈，并将该接地线单点连接到主电源的地。

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描述- SGMICRO specializes in high-performance and high-quality analog and mixed-signal integrated circuits, and is committed to building a comprehensive portfolio of the highest quality analog and mixed-signal integrated circuits to address all customer needs.

型号- 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描述- 圣邦微SGMICRO与TI/ADI/MAXIM/LT/Onsemi/ST/Microchip/Nexperia/MPS/TOSHIBA/ROHM/RICHTEK/SILERGY/ABLIC/Renesas/Diodes/NXP/NJM/Infineon/Allegro 等品牌的信号链、电源芯对照表。

型号- SY8388,SN74HC541,A3981,IR44273,74AVC8T245Q,TS3A24159,TS3A24157,FAN3100,SLG88103,ADA4622-2,SLG88104,ADA4622-1,SGM2560,NA199,SGM2564,TSL6002,LMR23620,SGM48017C,LM431,FAN49103,MAX4282,SGM61220,BD9A201,74HC595,TLV3542,TLV3541,TS3A4751,TLV522,LMR23630,FAN53611,TC7SZ14FU,74LCX04,NCS21803,HCF4051,NCS21801,HCF4052,74LCX08,HCF4053,TSC214I,TLV3544,LMP2022,TSB611,NL27WZ04,SGM2588,FAN53601,SN74HC573,SN74HC574,INA333,TSU101,TSC213I,TSU102,NTMFS4C10N,UCC27531-Q1,TSU104,RT8293,74HC573,74HC574,SGM621,RT8290,SGM41600,TSB621,SGM620,SGM2572,SGM41603,SGM2571,SGM2576,SGM2575,SGM2578,SGM8T245S,RT8296,NL17SG07,SGM8557-1,TSU111,SGM8557-2,TSU112,ESD103-B1-02,INA321,TLV2242,TLV2241,SGM2205-12XK3G,ISL28118,OPA2277,BU30TD2,LM5109,BQ25619,SGM48013C,BQ25618,INA317,BQ25611,SGM62110,SGM62112,FSA4157,TPS76933,SGM2593,XB6091IS,BQ25601,TPS76950,BQ25600,SGM61230,TXS0104,TXS0102,SGM61232,SGM61234,TLV8801,TXS0101,SGM61233,74HC123,SGM5349-16,TLV62084,SGM431V,LTC2054,TPS51200,LTC2050,TLV8812,TLV8811,SGM61235,TLV8802,RT8253,BD9D323,BD9D322,AD5541,PMPB27EP,TPS54302,SGM4553YXET,LM7322,SGM8706,LM7321,SGM8707,SGM8701,MAX4664,LPV7215,SGM12UB1D2,AP2191,SGM3001,SGM42513,74LVC245A,SGM3005,TPS61099,SGM3002,SGM8276-2,TPS7A8300,SGMOP17C,TPS2553,ISL28130,TPS2556,TPS2557,SGM42403Q,SGM42553,BD6222,SGM8255B-2,ISL28134,74AHC1G08GV,TPS2551,74HC165,SGM62116,SGM62118,SGM62117,TPS3852-Q1,MAX4684,74HC164,AP2172,A3916,AP2171,TPS560430,A3918,BQ25638,SGM8709,U74LVC126,MP8676,SGM61280,MCP6V16,SGM42544,NCP718,LMX331,LMR36520,LM27761,TC7SZ32FU,SN74LVTH162373,ADM708,ADM707,SGM38042,SGM38046,TPS54340,MAX4230,TPS3823,LM2904,TC74VHC138,LM2902,LM2903,SGM8740,SGM2077A,SGM8742,SGM2077B,SGM8743,PESD5V0F1BSF,SGM41515A,MIC5209,LPV802,LPV801,SGM8748,SGM8749,NLAS44599,TPS54336,SGM40666A,SGM8746,TC74VCX16245,TPS54331,74LCX32,TPS54335,SGM41513D,SGM41513A,MCP6406,FTL75939,OPA548,SGM8957-1,MCP6402,SGM8957-2,TLV6208,SGM5223,MAX4232,TC74LCX16244,MAX4231,TPS3808,SN74LVC2T45,OPA2333P,MAX4236,SGM8551XN,TPS3840,TPS54320,SGM48018C,OPA990,RT4730,SGM41512A,SGM8745X,SN74AHC1,MAX9938,74LVTN16244,74LVTN16245,LPV821,SGM48019C,MCP6V52,MCP6V51,RT4723,OPA2210,TLV755P,SN74AC244,MCP6V54,AW2027,SGM8604-2XTDU8G,SGM8750,LPV812,LPV811,AD8534,SGM41283,SGM5353-16,AP2120,AD8539,AD8538,74LVC125,MCP6V69,74LVC126,SGM41285,DRV8313,MCP6V67,SN74LVC2G66,SGM7SZ244S,CAT4104,TS321,SGM8429C-4,AD5593R,SGM61430A,MP28373,MP5121,TMP108,74LVT16373,SGM8304,MAX40078,AD8541,74LVT16374,MCP6442,TMP103,TMP102,MP9943,MP9942,AP2112,MCP6V79,NCV890100,SGM13003A,MCP6V76,STSPIN250,MCP6V77,74LVTH125,SGM8770,AP2114,SGM38042B-1,LM2841,AD8513,AD621,AD620,NCS20034,SGM65230,NCS20032,AD623,AD8515,SGM65231,AD627,TC7SPN334,SGM13002A,SGM8477-1,SGM2035C,SGM41291,SGM2036S,MCP6V96,TUSB320,74LVC138,SGM7SZ245S,SGM8958-2,SGM41296,SN74CBT3245,MP9928,SGM41298,SGM8958-1,SGM6132,MAX4736,SGM6130,AD8532,AD8531,MAX4730,TPS3422,SGM833A,MCP6472,SGM833B,TLV1702,SGM7SZ32,SQ27403,MC74LVC74,TPS3420,TPS3421,TP2011,SGM2037H,MUX36S08,BISS0002,MC74AHC08,74LVC373A,TPS2595XXDSG,MCP6001,TPS3895,AD8502,TPS3896,TPS3897,AD8500,MCP6002,TPS3898,AP2151,SGM41282C,TPS3899,AD8506,AD8505,TLV7021,SGM832A,TP2025,MC33074,TP2021,MCP6004,MCP6006,LT7183,74LVC374A,AP2141,SN74LVC2G04,MCP6492,74LVC1G126,74LVC1G125,SGM48535B,SGM7SZ14,SGM48535A,SGM48752X,TPS2596,BU28TD2WNVX,AS179,XC6201,SGM15CB1A4,XC6206,TC7WZ04,SN74LVC2G14,MCP6022,SGM2210P,SGM7SZ08,MCP6024,SGM834A,SN74LVC2G17,MCP6021,SGM834B,SGM7SZ04,MP2497,SGM7SZ00,IRL44273LPBF,SGM48753X,SGM48754X,AD5592R,TLV61046A,TPS7A8400,SGM48753,SY8301,SGM48754,SQ24335,SGM2211S,SGM48757,ISL21080,SGM48759,SY8303,MCP6032,MCP6031,SGM48751,SGM48752,SGMNQ07430,SGM61720,TSV911,TSV912,TSV914,SN74AVC16T245,MP2490,SGM05UB1B3,LPV324,OPA4379,OPA4374,HD3SS3412,MCP6044,OPA4376,OPA2192,MCP6041,74VHC244,LMR16030,74AHCT595,APD7118,OPA2197,TPS62730,MCP6042,OPA2196,SN74AVC8T245,SN74LVC157,OPA2191,ADG509,ADG508,SGM8478-1C,FSA2457,TMUX415,TC7SZ00,LM1117,AD8599,TPS62743,TSV6192,SN74LVC125,SGM706S,SN74LVC126,RT6160,TPS76901,TC7SZ07,SGM2564A,TLV707P,NTMFS4C06N,MP2451,TS393,LMH6643,TC74VCX164245,SN74LVC138,SGM48760,SGM25662,MIC708,MCP6061,MP2460,LME49726,RT6150,MIC706,SN74AHCT86,MCP6074,TC7SH125F,STSPIN220,APD196,SGMOP07,74HC541,TC7SET08,LMC7211,BQ25890H,MAX706,MAX9119,MAX708,MCP6071,SGM2566C,74AHC573D,TC7SZ32,BU33TD2,74LVC157,YDA145,BD9G341,SGM2567S,NJMOP2277,INA828,LPV358,NCP382,NE5532,SGM2217Q,LMG1025-Q1,NCV6324,SGMNQ40430,NCV6334,SGM48536BQ,SGM21102G,74AHCT86,BGA524N6,SGM21102C,FSA2466,SGM21102B,INA818,SGM21102A,SGM05FB1E2,SN74AHC244,TLV74118,TC7SZ32F,NC7WZ04,74AVC8T245BQ,TSV991,TSV992,TSV994,SGM3851A,SGM48536CQ,TC913,74AHC244,AD8571,74AVC2T45,SGM2521A,TLV74128,SN74LVC541,AZ1117,LMV881,BU28TD2,MAX14589,TLV2316,SGM61330,SGM724,TS5V330,SGM5209-14,74LV541A,SGM3758,NJU7076,MAX4163,MAX4162,PESD15VW1BCSF,TLV74133,TPS25921A,OP213,TLV74130,SGM722,TLV2333,SGM723,SGM721,SGM8610-2,NLAS3899,OPA2140,EL5420,MAX4174,MAX4173,SGM15UB1E2,TC7SH126FU,SGM41100A,SGM61310,SKY13351,A4980,SGM41100V,SGM61306,SGM61305,SGM61308,SGM61307,SGM8262-2,TC7PZ14,SGM3795,74LCX126,74LCX125,74LVC541A,SGM3799,SA4159

对照表 - SGMICRO

SGM62110/SGM62111 2.5A Buck-Boost Converters with I²C Interface

型号- SGM62110YG/TR,SGM62111YG/TR,SGM62110,SGM62111

数据手册 - SGMICRO - REV.A.1 - FEBRUARY 2023 PDF 英文下载查看更多版本

SGM62110S 2.5A Buck-Boost Converter with I²C Interface

型号- SGM62110S,SGM62110SYG/TR

数据手册 - SGMICRO - REV. A - JUNE 2024 PDF 英文下载

【产品】圣邦微新推出升降压DC/DC转换器SGM62110，负载能力为2.5A，峰值效率高达95%

圣邦微电子全新推出的升降压DC/DC转换器SGM62110，致力于解决消费类电子产品对电源器件的高需求。SGM62110在WLCSP-2.21×1.40-15B封装实现2.5A负载能力，仅需4个0603尺寸外围器件即可实现整体解决方案。

新产品发布时间 : 2022-06-27

SGM66022 8A Valley Current, 0.5V Ultra-Low Input, Synchronous Boost Converter

型号- SGM66022XTHD7G/TR,SGM66022

数据手册 - SGMICRO - REV.A - APRIL 2024 PDF 英文下载

【应用】国产升降压转换器SGM62110用于光模块的运放供电，峰值效率达95%

SGM62110是四开关Buck-Boost转换器，具有可编程IC接口，配置简单，集成了丰富的功能。可编程轻负载PFM（脉冲频率调制）模式和低静止电流在10mA到2A输出电流范围内提供90%以上的效率，非常适合光模块的应用。

应用方案发布时间 : 2022-10-25

【选型】SGMICRO升降压转换器SGM62110用于TWS耳机，静态电流仅18μA

TWS耳机在小型化上要求越来越高，因此产品的功率密度、效率、功耗等指标上是新的挑战。本文从性能参数及封装尺寸等方面分析，讨论圣邦微电子（SGMICRO）升降压转换器SGM62110在TWS耳机上应用的优势。

器件选型发布时间 : 2022-08-01

【应用】国产同步BUCK-BOOST转换器用于10G光模块，可自动切换升压模式和降压模式

10G SFP+ER光模块的电路设计中，不使用集成PID的TEC控制器，可以使用一颗BUCK-BOOST DCDC搭配运放来控制电流的输出，达到控制TEC加热和冷却的效果。SGM62112是SGMICRO一款完全集成的同步BUCK-BOOST转换器。

应用方案发布时间 : 2021-12-18

【应用】国产同步BUCK-BOOST转换器应用于户外太阳能供电，输出电流高达1200mA

某客户户外太阳能供电的无线低功耗产品设计中，采用3.7V可充锂电池输出稳定的3.8V给4G模块和 GNSS芯片供电，因此需要一个升降压芯片来实现。本文推荐圣邦微的自动模式转换的同步BUCK-BOOST转换器SGM62112-ADJYTD10G/TR。

应用方案发布时间 : 2022-06-17

【产品】完美抗击极限过载的同步降压转换器及多种升降压、充电IC

在2021年7年23日高效、低能耗电源管理专场|世强硬创新产品研讨会中，圣邦微资深技术专家曾文涛为我们做了演讲，视频介绍了为抗击极限过载而生圣邦微电子同步降压转换器SGM61230、具备负载断开功能的同步升压转换器SGM6612、小体积高效率同步升降压芯片SGM62110、5A高效率开关型充电芯片SGM41510，详细内容请点击视频观看吧。

新产品发布时间 : 2021-07-23