Inicio Gestión de la energía AC/DC & DC/DC controllers (external FET)

UC1843B-SP

ACTIVO

QMLV reforzado contra la radiación, entrada de 30 V, controlador PWM de 1 A y salida única de 500 kH

Detalles del producto

Vin (max) (V) 25 Operating temperature range (°C) -55 to 125 Control mode Peak current mode, Voltage Topology Boost, Buck, Flyback, Forward Rating Space Duty cycle (max) (%) 100
Vin (max) (V) 25 Operating temperature range (°C) -55 to 125 Control mode Peak current mode, Voltage Topology Boost, Buck, Flyback, Forward Rating Space Duty cycle (max) (%) 100
CFP (HKU) 10 45.4896 mm² 7.02 x 6.48 DIESALE (KGD) See data sheet
  • QML class V (QMLV) qualified, SMD 5962-86704
  • 5962R8670412VYC:
    • Radiation hardness assurance (RHA) up to 100-krad(Si) total ionizing dose (TID)
  • Optimized for offline and DC-to-DC converters
  • Low start-up current (< 0.5 mA)
  • Trimmed oscillator discharge current
  • Automatic feed forward compensation
  • Pulse-by-pulse current limiting
  • Enhanced load response characteristics
  • Undervoltage lockout (UVLO) with hysteresis
  • Double-pulse suppression
  • High-current totem-pole output
  • Internally-trimmed bandgap reference
  • 500-kHz operation
  • Low RO error amplifier
  • QML class V (QMLV) qualified, SMD 5962-86704
  • 5962R8670412VYC:
    • Radiation hardness assurance (RHA) up to 100-krad(Si) total ionizing dose (TID)
  • Optimized for offline and DC-to-DC converters
  • Low start-up current (< 0.5 mA)
  • Trimmed oscillator discharge current
  • Automatic feed forward compensation
  • Pulse-by-pulse current limiting
  • Enhanced load response characteristics
  • Undervoltage lockout (UVLO) with hysteresis
  • Double-pulse suppression
  • High-current totem-pole output
  • Internally-trimmed bandgap reference
  • 500-kHz operation
  • Low RO error amplifier

The UC1843B-SP control IC is a radiation hardened pin-for-pin compatible version of the UC1843A-SP. Providing the necessary characteristics to control current-mode switched-mode power supplies, this device has improved features. Start-up current is specified to be less than 0.5 mA and oscillator discharge is trimmed to 8.3 mA. During UVLO, the output stage can sink at least 10 mA at less than 1.2 V for VCC over 5 V.

The UC1843B-SP control IC is a radiation hardened pin-for-pin compatible version of the UC1843A-SP. Providing the necessary characteristics to control current-mode switched-mode power supplies, this device has improved features. Start-up current is specified to be less than 0.5 mA and oscillator discharge is trimmed to 8.3 mA. During UVLO, the output stage can sink at least 10 mA at less than 1.2 V for VCC over 5 V.

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Documentación técnica

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* Data sheet UC1843B-SP QML Class V, Radiation Hardened Current-Mode PWM Controller datasheet (Rev. B) PDF | HTML 07 dic 2020
* SMD UC1843B-SP SMD 5962-86704 19 may 2020
* Radiation & reliability report Single-Event Effects Test Report of the UC1843B-SP Current Mode PWM Controller 09 ago 2019
* Radiation & reliability report UC1843B-SP Neutron Displacement Damage (NDD) Characterization 28 jun 2019
* Radiation & reliability report UC1843B-SP total ionizing dose (TID) radiation report 28 feb 2019
More literature TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. A) 31 ago 2023
Application note QML flow, its importance, and obtaining lot information (Rev. C) 30 ago 2023
Application note Heavy Ion Orbital Environment Single-Event Effects Estimations (Rev. A) PDF | HTML 17 nov 2022
Application note Single-Event Effects Confidence Interval Calculations (Rev. A) PDF | HTML 19 oct 2022
Selection guide TI Space Products (Rev. I) 03 mar 2022
Application brief Controlling Input Power for Present and Next-Generation Power Controllers PDF | HTML 14 dic 2020
Application note DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer 21 ago 2020
Application note Hermetic Package Reflow Profiles, Termination Finishes, and Lead Trim and Form PDF | HTML 18 may 2020
E-book Radiation Handbook for Electronics (Rev. A) 21 may 2019
User guide UC1843B-SP evaluation module (EVM) user's guide 29 mar 2019

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

UC1843BEVM-CVAL — Módulo de evaluación UC1843B-SP de controlador PWM con modo de corriente

The UC1843BEVM-CVAL uses the UC1843A-SP, INA901-SP, LM139AQML-SP, and UC1901-SP to create an isolated feedback flyback with current sensing and over current flags. The UC1843A-SP is used to switch the low side MOSFET of the flyback converter and provide voltage and current to the output. The (...)
Guía del usuario: PDF
Modelo de simulación

UC1843A-SP TINA-TI Transient Reference Design

SLUM674.TSC (6331 KB) - TINA-TI Reference Design
Modelo de simulación

UC1843A-SP TINA-TI Transient Spice Model

SLUM675.ZIP (17 KB) - TINA-TI Spice Model
Modelo de simulación

UC1843A-SP Unencrypted PSpice Transient Model

SLUM660.ZIP (3 KB) - PSpice Model
Herramienta de cálculo

SLUC691 UC1843B-SP Flyback Converter Calculator

Productos y hardware compatibles

Productos y hardware compatibles

Productos
AC/DC & DC/DC controllers (external FET)
UC1843B-SP QMLV reforzado contra la radiación, entrada de 30 V, controlador PWM de 1 A y salida única de 500 kH
Diseños de referencia

TIDA-070002 — Diseño de referencia de protección contra sobrecorriente DC/DC de retorno aislada de grado espacial,

Spacecraft bus voltages vary from the well-established 28-V to more than the 100-V typically used in highpower commercial communications satellites, this reference design shows an example for a space-grade 50-W isolated intermediary bus converter, while implementing over-current protection (OCP) (...)
Design guide: PDF
Esquema: PDF
Paquete Pasadores Descargar
CFP (HKU) 10 Ver opciones
DIESALE (KGD)

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI. ​​​​​​​​​​​​​​

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