DC1317A-F Flyback, Forward, and Isolated Controller by Analog Devices

Status: Production
Series: LT1952
RoHS: Compliant
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The LT1952/LT1952-1 are current mode PWM controllers optimized to control the forward converter topology, using one primary MOSFET. The LT1952/LT1952-1 provide synchronous rectifier control, resulting in extremely high efficiency. A programmable Volt-Second clamp provides a safeguard for transformer reset that prevents saturation. This allows a single MOSFET on the primary side to reliably run at greater than 50% duty cycle for high MOSFET, transformer and rectifier utilization. The devices include soft-start for controlled exit from shutdown and undervoltage lockout. A precision 107mV current limit threshold, independent of duty cycle, combines with softstart to provide hiccup short circuit protection. The LT1952 is optimized for micropower bootstrap startup from high input voltages. The LT1952-1 allows startup from lower input voltages. Programmable slope compensation and leading edge blanking allow optimization of loop bandwidth with a wide range of inductors and MOSFETs. Each device can be programmed over a 100kHz to 500kHz frequency range and the part can be synchronized to an external clock. The error amplifier is a true op amp, allowing a wide range of compensation networks. The LT1952/LT1952-1 are available in a small 16-pin SSOP package.

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Prices starting from US$242.73

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Features

Synchronous Rectifier Control for High Efficiency
Programmable Volt-Second Clamp
Output Power Levels from 25W to 500W
Low Current Start-Up
(LT1952: 460µA; VIN On/Off = 14.25V/8.75V)
(LT1952-1: 400µA; VIN On/Off = 7.75V/6.5V)
True PWM Soft-Start
Low Stress Short Circuit Protection
Precision 107mV Current Limit Threshold
Adjustable Delay for Synchronous Timing
Accurate Shutdown Threshold with Programmable Hysteresis
Programmable Slope Compensation
Programmable Leading Edge Blanking
Programmable Frequency (100kHz to 500kHz)
Synchronizable to an External Clock up to 1.5 • fOSC
Internal 1.23V Reference
2.5V External Reference
Current Mode Control
Small 16-Pin SSOP Package

Last 6 months Inventory & Pricing History


Alternative Descriptions

LT1952-1 Current Mode PWM Controller 3.201VDC to 3.399VDC Output Demonstration Circuit | Richardson RFPD


DC1317A-F Development Boards & Evaluation Kits by Linear Technology

DEMO BOARD ISOLATED FORWARD CONV

Status: Unknown
Series: -
RoHS: Unknown
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Specifications

Silicon Manufacturer Linear Technology
Silicon Core Number LT1952
Kit Application Type Power Management - Voltage Regulator
Application Sub Type -
Kit Contents Demo Board LT1952
Product Range -
Automotive Qualification Standard -
SVHC No SVHC (07-Jul-2017)
Features Isolated Forward Converter Opto Coupler Driver Active Reset 20A/3.3V Output 9-36V Supply

Frequently Asked Questions

Where can I find additional details, specifications and documents for a DC1317A-F?

Additional datasheets, footprints and schematics for DC1317A-F are listed on our Part Details page. You can also find images and similar parts to DC1317A-F on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for DC1317A-F on our Product Comparison page. Access via the 'View Pricing & Stock' button to view DC1317A-F price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does DC1317A-F fall under?

The DC1317A-F is listed under Flyback, Forward, and Isolated Controller.

Can I view similar or alternative parts?

You can view similar parts to DC1317A-F when available in the Flyback, Forward, and Isolated Controller range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the DC1317A-F you can contact the distributor directly for product support, shipping queries etc.

Is the DC1317A-F RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

Which authorised distributors for DC1317A-F have stock available?

Authorised distributors including Richardson RFPD have stock available or on a lead time for DC1317A-F.

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