降压和降压升压变换器

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基于buck（或降压式）、以及buck-boost（或升/降压式）拓扑的离线式变换器将电源转换为稳压直流输出（可以是正输出，也可以是负输出），无需隔离变压器，只需调节功率开关的占空比。

电感器件中的电流波形定义变换器的运行模式（当电感中的电流从未降到零时是连续模式，当电感电流在一定间隔时间内保持为零是不连续模式）、当电感电流只在某一点为零则称为边界模式或过渡模式。这两种拓扑都可以使用低成本的电感器件进行能量存储和从输入到输出的转换。

我们的VIPerPlus高压变换器具有一系列功能，包括脉冲跳变保护（可以帮助减少启动时的峰值电流，允许使用更小、更便宜的电感器件），可帮助设计高效率且经济划算的离线降压式和升/降压式变换器（元件数最少，可靠性更高）。

此外，我们还提供广泛的评估和开发板、以及参考设计。

产品型号	描述
STEVAL-ISA195V1	5 V / 0.36 A buck converter using VIPerPlus ? VIPer11	Quick view 主要特性 Universal AC main input voltage range: 85 V_AC to 265 V_AC Output range: 5 V / 0.36 A Rated output power: 1.8 W Input power in standby at 230 V_AC : less than 18 mW Active mode efficiency: > 65% EMI: according to EN55022-Class-B RoHS compliant Show More Product Details 下载产品简介图片特色资源 Schematics BOM Gerber
STEVAL-ISA178V1	5 V / 200 mA high voltage buck-converter based on VIPer01	Quick view 主要特性 Five-star energy efficiency for operation under no load (P_{IN_no_load} < 20 mW @ 230 V_AC ) Meets ErP Lot 6 Tier 2 requirements for household and office equipment Compliant with the 10% load efficiency and 4-point average active-mode efficiency targets prescribed by the European CoC ver. 5 Tier 2 Meets IEC55022 Class B conducted EMI even with reduced EMI filter, thanks to the frequency jittering feature VIPer01 800V avalanche rugged technology and embedded protections ensure enhanced system reliability RoHS compliant Show More Product Details 下载产品简介图片特色资源 Schematics BOM Gerber
STEVAL-ISA179V1	15 V, 0.15 A buck converter using VIPer™ Plus - VIPer0P	Quick view 主要特性 Universal AC main input voltage range: 85 V_AC to 265 V_AC Output range: 15 V / 0.15 A Rated output power: 2.25 W Input power in standby @230 V_AC : less than 40 mW Active mode efficiency: greater than 77% EMI: EN55022-Class-B compliant RoHS compliant Show More Product Details 下载产品简介图片特色资源 Schematics BOM Gerber
STEVAL-ISA114V1	5 V/0.8 W wide-range 30 kHz buck converter based on the VIPer06XS	Quick view 主要特性 Universal input mains range: input voltage: 90 - 264 V_AC frequency: 45 - 65 Hz Single-output voltage: 5 V @ 0.16 A continuous operation Fully protected against faults (overload, feedback disconnection and overheating) EMI: according to EN55022-Class-B RoHS compliant Show More Product Details 下载产品简介图片特色资源 Schematics BOM Gerber
STEVAL-ISA119V1	1.5 W double output buck demonstration board based on the VIPER16LD	Quick view 主要特性 Input voltage range (V_IN ): 90 V_RMS to 265 V_RMS Output voltage 1 (V_OUT1 )= 12 V Max output current 1: (I_OUT1 ) = 0.1 A Output voltage 2: (V_OUT2 ) = 5 V (through LDO) Max output current 2: (I_OUT2 )= 0.05 A Precision of output regulation ΔV_{OUT_LF} = ±5% High frequency output voltage ripple ΔV_{OUT_HF} = 50 mV Max ambient operating temperature T_A = 60 °C Show More Product Details 下载产品简介图片特色资源 Schematics BOM Gerber
STEVAL-ISA130V1	12 V 140 mA 30 kHz non-isolated buck topology regulator based on VIPer06XN	Quick view 主要特性 800 V avalanche-rugged power section PWM operation current mode controller Limiting current with adjustable set point Fixed frequency with jitter for EMI improvement Operating frequency: 30 kHz Input voltage range: 85 V to 265 V AC or 100 V to 375 V DC Low power application without auxiliary winding No load consumption below 30 mW @ 265 V_ac On-board soft-start Auto-restart after a fault condition Feedback disconnection protection Hysteretic thermal shutdown RoHS compliant Show More Product Details 下载产品简介图片特色资源 Schematics BOM Gerber
STEVAL-ISA116V1	5 W, 2-output wide-range buck converter based on the VIPER26LD	Quick view 主要特性 Universal input mains range: input voltage: 80 - 280 V_AC frequency: 45 - 65 Hz Double-output voltage: 16 V @ 0.3 A continuous operation 5 V through LDO Standby mains consumption: < 100 mW @ 265 V_AC Fully protected against faults (overload, feedback disconnection and overheating) EMI: according to EN55022-Class-B RoHS compliant Show More Product Details 下载产品简介图片特色资源 Schematics BOM Gerber
STEVAL-ISA115V1	12 V, 150 mA non-isolated buck converter using VIPer™ Plus - VIPER06XS	Quick view 主要特性 Universal input mains range: input voltage: 90 VAC - 264 VAC frequency: 45 Hz - 65 Hz Single-output voltage: 12 V @ 0.15 A continuous operation Standby mains consumption: < 50 mW @ 265 VAC Average efficiency: > 75% Fully protected against faults (overload, feedback disconnection and overheating) EMI: in accordance with EN55022-Class-B RoHS compliant Show More Product Details 下载产品简介图片特色资源 Schematics BOM Gerber
STEVAL-ISA096V1	Auxiliary power supply in buck-boost topology based on the Viper06	Quick view 主要特性 Input voltage: V_in : 85 ~ 264 Vrms; f: 45 ~ 66 Hz Output voltage: -12 Vdc ± 10%, 150 mA Standby < 30 mW at 264 Vac Short-circuit: protected PCB type and size: FR4 single-side 35 μm, 32 x 90 mm Isolation: isolated 4 kV/8 mm EMI: according to EN55022 class B RoHS compliant Show More Product Details 下载产品简介图片特色资源 Schematics BOM Gerber
STEVAL-ISA010V1	Ultra wide range dual output back converter demonstration board based on the VIPER16	Quick view 主要特性 EMC: burst - IEC 61000-4-4 - 8 kV EMC: surge - IEC 61000-4-5 - 2 kV RoHS compliant Isolation: non isolated - N connected to output GND PCB type and size:FR4, single side 70 μmdim.: 27 x 45 mm Input voltage Vin: 85 - 500 VAC (f: 45 - 66 Hz) Output current: 150 mA total (5 V and 12 V output) output current for full input voltage range Output voltages:V1= 12 V ± 10%V2= 5 V ± 4% Short-circuit protection EMI: In accordance with EN55022 - class B Standby: 96 mW at 230 VAC Show More Product Details 下载产品简介图片特色资源 Schematics BOM Gerber
STEVAL-VP26K01B	15 V / 100 mA high voltage buck converter reference design based on VIPER26K	Quick view 主要特性 Ultra-wide range: 90–600 V_AC or 60–870 V_DC Frequency: 50-60 Hz Output voltage: 15 V Output current: 100 mA Very compact size Tight line and load regulation over the entire input and output range Meets IEC55022 Class B conducted EMI even with a reduced EMI filter, thanks to the frequency jittering feature RoHS compliant Show More Product Details 下载产品简介图片特色资源 Schematics BOM Gerber
STEVAL-VP12201B	15 V/200 mA buck converter based on VIPER122	Quick view 主要特性 Universal input mains range: 85–265 V_AC Frequency: 50-60 Hz Output voltage: 15 V Output current: 200 mA Very compact size Stand-by mains consumption: < 30mW at 230 V_AC Average efficiency: > 77% Tight line and load regulation over the entire input and output range Meets IEC55022 Class B conducted EMI even with reduced EMI filter, thanks to the frequency jittering feature WEEE compliant RoHS compliant Show More Product Details 下载产品简介图片特色资源 Schematics BOM Gerber

产品型号

STEVAL-ISA195V1

5 V / 0.36 A buck converter using VIPerPlus ? VIPer11

快速查看

STEVAL-ISA178V1

5 V / 200 mA high voltage buck-converter based on VIPer01

快速查看

STEVAL-ISA179V1

15 V, 0.15 A buck converter using VIPer™ Plus - VIPer0P

快速查看

STEVAL-ISA114V1

5 V/0.8 W wide-range 30 kHz buck converter based on the VIPer06XS

快速查看

STEVAL-ISA119V1

1.5 W double output buck demonstration board based on the VIPER16LD

快速查看

STEVAL-ISA130V1

12 V 140 mA 30 kHz non-isolated buck topology regulator based on VIPer06XN

快速查看

STEVAL-ISA116V1

5 W, 2-output wide-range buck converter based on the VIPER26LD

快速查看

STEVAL-ISA115V1

12 V, 150 mA non-isolated buck converter using VIPer™ Plus - VIPER06XS

快速查看

STEVAL-ISA096V1

Auxiliary power supply in buck-boost topology based on the Viper06

快速查看

STEVAL-ISA010V1

Ultra wide range dual output back converter demonstration board based on the VIPER16

快速查看

STEVAL-VP26K01B

15 V / 100 mA high voltage buck converter reference design based on VIPER26K

快速查看

STEVAL-VP12201B

15 V/200 mA buck converter based on VIPER122

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00 选择要下载的文档

技术文档

应用手册

描述	版本	文档大小	操作
AN4260 12 V, 150 mA non-isolated buck converter using the VIPER06XS, from the VIPer™ plus family	4.2	3.5 MB	PDF
AN1768 ADMISSIBLE AVALANCHE POWER OF SCHOTTKY DIODES	1.1	46.82 KB	PDF
AN2025 CONVERTER IMPROVEMENT USING SCHOTTKY RECTIFIER AVALANCHE SPECIFICATION	1.1	147.59 KB	PDF
AN604 Calculation of conduction losses in a power rectifier	3.2	137.74 KB	PDF
AN4021 Calculation of reverse losses in a power diode	1.0	120.47 KB	PDF
AN1453 NEW FAMILY OF 150V POWER SCHOTTKY	1.1	131.48 KB	PDF
AN5046 Printed circuit board assembly recommendations for STMicroelectronics PowerFLAT packages	4.0	4.82 MB	PDF
AN5088 Rectifiers thermal management, handling and mounting recommendations	2.0	2.32 MB	PDF
AN443 SERIES OPERATION ON FAST RECTIFIERS	2.1	202.48 KB	PDF
AN4273 STEVAL-ISA114V1: 5 V / 0.8 W 30 kHz buck with the VIPer06XS	3.0	978.71 KB	PDF
AN4562 STEVAL-ISA116V1: 5 W, 2 output wide range buck converter based on the VIPER26LD	1.0	896.83 KB	PDF
AN4345 STEVAL-ISA119V1: 1.5 W double output buck product evaluation board based on the VIPER16LD	1.0	2.84 MB	PDF
AN4858 STEVAL-ISA178V1 5 V/1 W 30 kHz buck demo with VIPer01	1.0	1.84 MB	PDF
AN4857 STEVAL-ISA179V1 15 V/2.25 W 60 kHz buck demo with VIPer0P	1.0	1.61 MB	PDF
AN2872 Super wide-range buck converter based on the VIPer16	1.2	581.24 KB	PDF
AN869 Tj max limit of Schottky diodes	2.2	60.9 KB	PDF

AN4260

12 V, 150 mA non-isolated buck converter using the VIPER06XS, from the VIPer™ plus family

产品型号	描述
STTH108	800 V, 1 A Ultrafast Diode
STTH112	1200 V, 1A Ultrafast Diode
STTH15RQ06	600 V, 15 A Turbo 2 Soft Ultrafast Recovery Diode

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