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The device is a high-voltage converter that smartly integrates an 800 V rugged power MOSFET with PWM current-mode control. The power MOSFET allows a very high input Vac to be applied, just limited from its breakdown voltage. This IC is capable of meeting more stringent energy-saving standards as it has very low consumption and operates in burst mode under light load.
The device features an adjustable extra power timer (EPT) that enables the IC to sustain overload conditions for a few seconds.
The integrated HV startup, sense FET and oscillator with jitter allow the advantage of using minimal components in the application.
The device features high-level protections like dual-level OCP, output overvoltage, short-circuit, and thermal shutdown with hysteresis. After the removal of a fault condition, the IC is automatically restarted.
主要特性
- 800 V avalanche-rugged power MOSFET allowing ultra wide range input Vac to be achieved
- Embedded HV start-up and sense FET
- PWM current-mode controller
- OCP with selectable threshold (IDlim) and 2nd OCP with higher value (IDMAX) to protect the IC from transformer saturation or short-circuit of the secondary diode
- 30 mW no-load consumption at 230 Vac
- Two operating frequencies:
- 60 kHz (L type) or 115 kHz (H type)
- Jittered frequency reduces the EMI
- Extra power timer (EPT) blanks the overload current for few seconds
- Output overvoltage protection with tight tolerance and digital noise filter
- Soft-start reduces the stress during startup and increases IC lifetime
- Automatic restart after a fault condition
- Thermal shutdown increases system reliability and IC lifetime
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评估工具
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图片 产品型号 制造商 描述 
STEVAL-ISA153V1 -- 基于VIPER38LE的12 V/15 W（峰值 20 W）隔离反激式转换器 
STEVAL-ISA182V1 ST 使用VIPER38HD的8.4 W / 30 W峰值功率离线反激式转换器 产品型号基于VIPER38LE的12 V/15 W（峰值 20 W）隔离反激式转换器
使用VIPER38HD的8.4 W / 30 W峰值功率离线反激式转换器
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质量与可靠性
| 产品型号 | Marketing Status | 封装 | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|
| VIPER38HD | 批量生产 | SO-16 | 工业 | Ecopack2 | |
| VIPER38HDTR | 批量生产 | SO-16 | 工业 | Ecopack2 | |
| VIPER38HE | 批量生产 | SDIP 10 | 工业 | Ecopack2 | |
| VIPER38LD | 批量生产 | SO-16 | 工业 | Ecopack2 | |
| VIPER38LDTR | 批量生产 | SO-16 | 工业 | Ecopack2 | |
| VIPER38LE | 批量生产 | SDIP 10 | 工业 | Ecopack2 | |
VIPER38HE
Package:
SDIP 10Material Declaration**:
VIPER38LE
Package:
SDIP 10Material Declaration**:
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持 。
样片和购买
| 产品型号 | 从分销商订购 | 从ST订购 | 封装 | 包装类型 | 供货状态 | RDS(on) (Ω) (max) | Transistor Breakdown Voltage (V) (min) | Drain Current (A) (nom) | ECCN (US) | Country of Origin | Budgetary Price (US$)*/Qty | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VIPER38LD | 3 distributors | 获取样片 | SO-16 | Tube | 批量生产 | 4.5 | 800 | 1.15 | EAR99 | THAILAND | 0.464 / 1k | |
| VIPER38LE | 1 distributors | 立即购买 | SDIP 10 | Tube | 批量生产 | 4.5 | 800 | 1.15 | EAR99 | CHINA | 0.485 / 1k | |
| VIPER38HD | 1 distributors | 获取样片 | SO-16 | Tube | 批量生产 | 4.5 | 800 | 1.15 | EAR99 | THAILAND | 0.464 / 1k | |
| VIPER38LDTR | 3 distributors | 获取样片 | SO-16 | Tape And Reel | 批量生产 | 4.5 | 800 | 1.15 | EAR99 | THAILAND | 0.464 / 1k | |
| VIPER38HDTR | 2 distributors | 获取样片 | SO-16 | Tape And Reel | 批量生产 | 4.5 | 800 | 1.15 | EAR99 | THAILAND | 0.464 / 1k | |
| VIPER38HE | 1 distributors | 获取样片 | SDIP 10 | Tube | 批量生产 | 4.5 | 800 | 1.15 | EAR99 | CHINA | 0.485 / 1k |
