低功率DC/DC转换器的3D电源封装

尽管对更高性能和功率密度的需求不断增长,低功率的DC/DC转换器还是需要具有一定的性价比,经过一段时间的努力,制造商们针对这一需求推出了许多架构来满足低成本制造的要求,例如尽量降低器件数量以及将变压器和电感手工焊接到传统PCB上。为了最大程度地减少PCB尺寸,通常采用通孔的安装方法,但是这可能使组装过程变得复杂,因为同一块PCB板需要经过波峰焊和回流焊两道工序。

尽管每年售出数百万个采用通孔安装方式的DC/DC转换器,但是RECOM的长期目标是开发出像其他标准器件一样直接进行贴片焊接的版本,同时还需要具有超薄尺寸以符合当今流线型产品的设计要求。需注意的是,为了体现转换器模块相比分立器件设计的优势,模块尺寸必须尽可能的小,为达到这一点,DC/DC转换器模块必须通过利用Z方向集成成3D电源封装。

RPM, RPMB, RPMH - 非隔离型LGA电源

  • 0.5A、1A、1.5A、2A、3A & 6A 输出电流
  • 4-65VDC输入
  • 可调输出电压至28VDC
  • 效率高达99%,无须散热器
  • 6面屏蔽,低EMI
  • 宽工作温度范围:-40°C至+107°C@满载
  • 应用于通讯、FPGA或POL等电池供电设备
  • 全面的保护功能包括SCP、OCP、OTP & UVLO
  • 欧洲制造
高功率方面以RECOM RPM/RPMB系列为例,30W的电源采用热增强25焊盘LGA封装(长宽各12.19mm、高3.75mm)。达到这样高的功率密度是因为内部使用了多层PCB,利用塞孔和盲孔达到良好的导热性并有效利用空间。正如地基是任何大型建筑物的关键一样,内部多层PCB的复杂热管理结构为安装在上方的功率器件提供了坚固的基础。


RPM内部PCB识图


该器件的结构为四层PCB板,由六面金属外壳封装以降低EMI。这种结构极薄,只需稍微大于1.4cm²的空间来适当散热即可在超过+85°C的环境温度下提供全功率。RPMB/RPMH的设计优点是复杂的结构全部在模块内部。最终用户可以选择低成本的两层PCB而非昂贵的塞孔,并在不依靠强制风冷(风扇)的情况下依然能够使用高性能的紧凑型SMT板载电源。

RPM系列提供3种选项,焊盘设计均相同因此可以通用:

RPM

  Series Current (A) Vin (V) Main Vout (V) Mounting Type Package Style
1 DC/DC, Single Output, SMD (pinless) RPM-1.0 Series
Focus
1.0 3.0 - 17.0 0.9 to 6 SMD (pinless) 25 pad LGA
2 DC/DC, Single Output, SMD (pinless) RPM-2.0 Series
Focus
2.0 3.0 - 17.0 0.9 to 6 SMD (pinless) 25 pad LGA
3 DC/DC, Single Output, SMD (pinless) RPM-3.0 Series
Focus
3.0 3.0 - 17.0 0.9 to 6 SMD (pinless) 25 pad LGA
4 DC/DC, Single Output, SMD (pinless) RPM-6.0 Series
Focus
6.0 4.0 - 15.0 0.9 to 6 SMD (pinless) 25 pad LGA
5 DC/DC, Single Output RPM-1.0-EVM-1 Series
1.0 3.0 - 17.0 0.9 to 6 Open Frame
6 DC/DC, Single Output RPM-2.0-EVM-1 Series
2.0 3.0 - 17.0 0.9 to 6 Open Frame
7 DC/DC, Single Output RPM-3.0-EVM-1 Series
3.0 3.0 - 17.0 0.9 to 6 Open Frame
8 DC/DC, Single Output RPM-6.0-EVM-1 Series
6.0 4.0 - 15.0 0.9 to 6 Open Frame

RPMB

  Series Current (A) Vin (V) Trim Pin Output Voltage Adjustment Mounting Type Package Style
1 DC/DC, Single Output, SMD (pinless) RPMB-2.0 Series
Focus
2.0 4.0 - 36.0, 5.5 - 36.0, 12.8 - 36.0, 16.0 - 36.0 1-9, 9-24 SMD (pinless) 25 pad LGA
2 DC/DC, Single Output, SMD (pinless) RPMB-3.0 Series
Focus
3.0 4.0 - 36.0, 5.5 - 36.0, 12.8 - 36.0, 16.0 - 36.0 1-9, 9-24 SMD (pinless) 25 pad LGA
3 DC/DC, Single Output RPMB-2.0-EVM-1 Series
2.0 4.0 - 36.0, 5.5 - 36.0, 12.8 - 36.0, 16.0 - 36.0 1-9, 9-24 Open Frame
4 DC/DC, Single Output RPMB-3.0-EVM-1 Series
3.0 4.0 - 36.0, 5.5 - 36.0, 12.8 - 36.0, 16.0 - 36.0 1-9, 9-24 Open Frame

RPMH

  Series Current (A) Vin (V) Main Vout (V) Mounting Type Package Style
1 DC/DC, Single Output, SMD (pinless) RPMH-0.5 Series
Focus
0.5 4.3 - 65.0, 6.0 - 65.0, 13.5 - 65.0, 16.5 - 65.0, 25.5 - 65.0 15 to 28, 2.64 to 3.63, 4 to 5.5, 7.2 to 13.2, 9 to 16.5 SMD (pinless) 25 pad LGA
2 DC/DC, Single Output, SMD (pinless) RPMH-1.5 Series
Focus
1.5 5.0 - 60.0, 7.0 - 60.0, 14.0 - 60.0, 17.0 - 60.0, 26.0 - 60.0 15 to 28, 2.64 to 3.63, 4 to 5.5, 7.2 to 13.2, 9 to 16.5 SMD (pinless) 25 pad LGA
3 DC/DC, Single Output RPMH-0.5-EVM-1 Series
0.5 4.3 - 65.0, 6.0 - 65.0, 13.5 - 65.0, 16.5 - 65.0, 25.5 - 65.0 15 to 28, 2.64 to 3.63, 4 to 5.5, 7.2 to 13.2, 9 to 16.5 Open Frame
4 DC/DC, Single Output RPMH-1.5-EVM-1 Series
1.5 5.0 - 60.0, 7.0 - 60.0, 14.0 - 60.0, 17.0 - 60.0, 26.0 - 60.0 15 to 28, 2.64 to 3.63, 4 to 5.5, 7.2 to 13.2, 9 to 16.5 Open Frame

RPX - 非隔离型QFN电源模块

  • 1A、1.5A、2.5A 和4A输出电流
  • Vin高达36VDC
  • 可调输出高达30VDC
  • 引线框架的过模封装技术
  • 简化设计,集成FET、电感器和无源器件
  • 出色的热性能满足最严苛的应用需求
  • 全面保护功能包括SCP、OCP、OTP和UVLO
非隔离型DC/DC模块最初是用来取代低效率的三端线性稳压器,但现在被广泛作为负载点稳压器使用,为集成度很高的IC(例如CPU、GPU和SoC设备)提供精确稳定的低压电源。为了比分立式解决方案更有优势,DC/DC模块的面积和高度必须降到最低,并在满足现代IC严格的法规和干扰标准要求的同时保持在低温下工作。要实现如此小的尺寸就意味着高效率,也就代表低开关频率和伴随而来的大尺寸输出电感,但这与所需的恰恰相反。然而改良后的半导体、转换器拓扑和磁性材料将频率推进MHz的范围,以较小的电感保持极高的效率。如此一来转换器设计人员就可以发挥创意在封装上实现惊人的微型化,甚至可以将电感集成到封装之中。例如,RECOM RPX系列的面积仅4.5mm x 4mm,采用QFN封装的高度仅2mm,同时提供高达4A的输出电流,峰值效率超过90%。更小的1A版本的尺寸仅3mm x 5mm x 1.6mm。能达到这样的功率密度是因为引线框架上采用了低成本倒装芯片的过模封装,附加的优势是紧密的开关电流环路所产生的EMI非常低,再加上高功率密度和优化的热性能,这些是分立式器件解决方案无法与之匹美的。


RECOM RPX系列的引线框架上倒装芯片结构

RPX

  Series Current (A) Vin (V) Main Vout (V) Mounting Type Package Style
1 DC/DC, 2.5 W, Single Output, SMD (pinless) RPX-0.5Q Series
Focus
0.5 4.0 - 36.0 0.8 to 34 SMD (pinless) QFN
2 DC/DC, 5.0 W, Single Output, SMD (pinless) RPX-1.0 Series
Focus
1.0 4.0 - 36.0 0.8 to 24 SMD (pinless) QFN
3 DC/DC, 7.5 W, Single Output, SMD (pinless) RPX-1.5 Series
Focus
1.5 4.0 - 36.0 0.8 to 24 SMD (pinless) QFN
4 DC/DC, 7.5 W, Single Output, SMD (pinless) RPX-1.5Q Series
Focus
1.5 4.0 - 36.0 0.8 to 30 SMD (pinless) QFN
5 DC/DC, 12.5 W, Single Output, SMD (pinless) RPX-2.5 Series
Focus
2.5 4.5 - 28.0 1.2 to 6 SMD (pinless) QFN
6 DC/DC, 20.0 W, Single Output, SMD (pinless) RPX-4.0 Series
Focus
4.0 3.8 - 36.0 1 to 7 SMD (pinless) QFN
7 DC/DC, 20.0 W, Single Output RPX-4.0-EVM-1 Series
Focus
4.0 4.0 - 36.0 1 to 7 Open Frame
8 DC/DC, 5.0 W, Single Output RPX-1.0-EVM-1 Series
1.0 4.0 - 36.0 0.8 to 24 Open Frame
9 DC/DC, 7.5 W, Single Output RPX-1.5-EVM-1 Series
1.5 4.0 - 36.0 0.8 to 24 Open Frame
10 DC/DC, 12.5 W, Single Output RPX-2.5-EVM-1 Series
2.5 4.5 - 28.0 1.2 to 6 Open Frame

RPY

  Series Current (A) Vin (V) Main Vout (V) Mounting Type Package Style
1 DC/DC, 7.5 W, Single Output, SMD (pinless) RPY-1.5Q Series
Focus
1.5 4.0 - 36.0 0.8 to 34.8 SMD (pinless) QFN
2 DC/DC, 7.5 W, Single Output RPY-1.5Q-EVM-1 Series
Focus
1.5 4.0 - 36.0 0.8 to 34.8 Open Frame

RPL-3.0 INTEGRATED INDUCTOR DC/DC POWER MODULE

  • 3A non-isolated SMD power module
  • Tiny 3mm x 3mm x 1.45mm size
  • Adjustable output from 0.8 to 5.2 VDC (15.6W max.) with sense feedback.
  • Wide 3-18 VDC input covering 3.3, 5, 12 or 15 VDC rails or battery-powered supplies.
  • Up to 96% efficiency (50% load)
  • Wide operating temperature range (-40°C up to +120°C)
  • Fully protected with SCP, OCP, OVP & OTP
  • Enable and power-good pins for simple power rail sequencing
  • Meets EN55032 EMC limits with simple LC filter components
  • For distributed power architecture, portable equipment, imaging systems and industrial applications
The RPL-3.0 is a power module with integrated inductor in a tiny 3 x 3 x 1.45mm LGA package. Despite its small size, it is a complete power module, requiring only input and output MLCC capacitors and two output voltage setting resistors to create a fully functioning power supply. A sense input compensates for any I²R losses in the output tracks, while enable and power good connections permit simple power rail sequencing in distributed power architecture applications. An internal LDO regulator provides a fixed 3.3 VDC/20mA output suitable for pull-ups or external control logic.

The wide input voltage range covers standard 3.3, 5, 12 or 15 VDC supply rails or battery-powered portable applications. In shutdown, the module draws only 15µA. The internal controller uses constant on-time control for a fast reaction to abrupt load transients combined with a separate slow control loop for output stability, offering precise load regulation without compromising on transient response. This makes the RPL-3.0 especially suitable for powering dynamic loads such as microcontrollers, radios or pulsed current imaging systems.

RPL-3.0

  Series Iout 1 (mA) Vin (V) Vout 1 (V) Mounting Type Package Style
1 DC/DC, 15.0 W, Single Output, SMD (pinless) RPL-3.0 Series
Focus
3000.0 4.0 - 18.0 5.0 SMD (pinless) 10 pad LGA

RS12-Z系列:12W隔离型稳压DC/DC转换器

  • 12W、SIP8封装
  • 3kVDC隔离电压
  • 稳压型
  • 4:1输入9-36V或18-75V
  • 多种输出电压选择
  • 高工作温度
  • 开/关控制
  • 输出可调
  • 短路保护
  • 安全机构认证
RS12-Z系列为SIP8封装的DC/DC转换器,凭借超薄平面变压器技术、先进的封装和散热设计将功率密度达到了新的高度。该系列采用金属外壳,具有很高的效率,在对流冷却下可以12W满载工作至75°C(24V输入),同时使用行业标准引脚,因此可与同为SIP8封装的3W和6W模块兼容,轻松升级电源。需要最小的外部滤波器以符合EN 55032 EMC的A类或B类要求。模块还具有输出可调、输入欠压锁定以及连续短路保护功能。

当需要较宽输入范围、涵盖多个标称电压的时候这些模块是最佳选择。

RS12-Z

  Series Power (W) Vin (V) Vout 1 (V) Mounting Type Package Style
1 DC/DC, 12.0 W, Single Output, THT RS12-Z Series
Focus
12.0 9.0 - 36.0, 18.0 - 75.0 3.3 - 24.0 THT SIP8

R1SX、R2SX、R1DX、R1ZX:表面贴装的隔离型DC/DC转换器

  • 全系列采用行业标准表面贴装引脚
  • 多种输入和输出电压
  • 提供双路输出(R1DX)
  • 隔离高达3kV/1秒(2kV R1ZX)
  • 高效率
  • 无最低负载要求
  • 宽温度范围内提供1W输出(R1SX、R1DX、R1ZX)
  • 2W输出(R2SX)
  • 适用于通信接口电源隔离和一般性应用
  • 安全机构认证
这些DC/DC转换器使用RECOM专有的3D电源封装技术。定制的塑料底座支撑着上方的控制PCB,隔离变压器则安装在下方以缩小整体尺寸,高度依系列的不同在5.8mm至8.5mm之间。开放式结构的特殊价值在于可以接受灌封或模制器件所不能承受的回焊炉温。R1SX系列提供1W单路输出,工作温度高达100°C,而R1DX则是双路输出。这两款模块均提供3kV/1秒的隔离强度并通过机构认证。R1ZX系列与R1SX相似,但包括一个线性稳压器,提供精确、低噪声输出以及2kV/1秒的隔离。R2SX系列提供2W输出,工作温度高至75°C(降额可达100°C)以及3kV/1秒的隔离。

所有此封装格式的器件均具行业标准和兼容引脚,非常适合在总线隔离器、工业控制和电池管理系统中使用。

R1SX, R2SX, R1DX, R1ZX

  Series Power (W) Vin (V) Vout 1 (V) Mounting Type Package Style
1 DC/DC, 1.0 W, Dual Output, SMD R1DX Series
Focus
1.0 5.0 5.0 - 15.0 SMD Open Frame
2 DC/DC, 1.0 W, Single Output, SMD R1SX Series
Focus
1.0 3.3, 5.0, 12.0 3.3, 5.0 SMD Open Frame
3 DC/DC, 2.0 W, Single Output, SMD R2SX Series
Focus
2.0 5.0, 12.0, 24.0 3.3 - 24.0 SMD Open Frame
4 DC/DC, 1.0 W, Single Output, SMD R1ZX Series
1.0 5.0 5.0 SMD Open Frame

R05CT05S - 隔离型SOIC-16 DC/DC转换器

  • 传输功率0.5W
  • 超薄型2.65mm
  • 可选的输出电压:3.3和5VDC
  • 宽工作温度范围(-40至+140C)
  • 5kVAC加强隔离
  • 用于医疗外围设备、COM端口隔离、收发器隔离、电流传感器
  • 符合CISPR32 B级EMC规范
  • 符合62368-1和60601-1(2MOPP)
  • 全面保护功能包括SCP、OCP和OTP
目前所描述的都是非隔离型转换器,而当需要安全认证等级的隔离时,最小的X和Y尺寸就要取决于爬电距离和电气间隙。例如,使用主系统电压的医疗应用若要符合双重患者保护(2MOPP),输入和输出之间需要8mm的爬电距离。有了这个最小的封装尺寸,我们就可以采用更传统的方式将电源和控制IC的内部芯片引线键合至DVE SOIC-16引线框,然后按常规方法进行过模封装,而RECOM的R05CT05S就是如此设计的。该DC/DC转换器的变压器使用专利超薄平面型设计,具有5k VAC隔离电压和2MOPP增强隔离。转换器的高度仅2.65mm,加上隔离型DC/DC转换器的高度不会高于其他的SMT器件,因此非常适合卡式应用。R05CT05S提供完整的线性和负载调整以及外部使能输入等功能。RECOM R05CT05S的输出功率为500mW,具有5V输入和5V或3.3V输出,特别适合为高端医疗和工业应用中的隔离接口供电。
The R05CT05S part offers a line and load regulated output with an external enable, operates from -40°C up to +140°C, delivers 500mW from a 5V input with selectable 5V or 3.3V outputs and is particularly suitable for powering isolated interfaces in medical and industrial applications as it is IEC/EN 60601-1 and IEC/EN 62388-1 compliant.
The R05CTE05S part is a lower cost alternative with a semi-regulated 5V output and basic isolation (3kVDC/1min) and operating range (-40°C up to +125°C). However, it delivers double the power (1000mW) from a 5V input, and its automated manufacture makes it particularly suitable for powering isolated interfaces in high reliability industrial applications. It is IEC/EN 62388-1 compliant.
The R05C05TE05S part is a very cost effective alternative with a semi-regulated 5V output and basic isolation (3kVDC/1min) and operating range (-40°C up to +125°C). It delivers 500mW (600mW peak) from a 5V input, and its automated manufacture makes it particularly suitable for powering isolated interfaces in high reliability industrial applications. It is IEC/EN 62388-1 compliant.

RxxCT(E) and RxxC05TE Series

  Series Power (W) Vin (V) Vout 1 (V) Mounting Type Package Style
1 DC/DC, 0.5 W, Single Output, SMD RxxC05TExxS Series
Focus
0.5 5.0 5.0 SMD SMD 16 Pin
2 DC/DC, 1.0 W, Single Output, SMD RxxCTExxS Series
Focus
1.0 5.0 5.0 SMD SMD 16 Pin
3 DC/DC, 0.5 W, Single Output, SMD RxxCTxxS Series
Focus
0.5 5.0 5.0 SMD SMD 16 Pin

订购具有最新DC/DC封装技术的RECOM评估板来加快产品原型设计或确认最终应用的性能。

如需更多信息,欢迎与我们联系

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