MAXREFDES9# by Analog Devices

36V H-Bridge Transformer Driver for Isolated Supplies


The MAX13256 H-bridge transformer driver provides a simple solution for making isolated power supplies up to 10W. The device drives a transformer's primary coil with up to 300mA of current from a wide 8V to 36V DC supply. The transformer's secondary-to-primary winding ratio defines the output voltage, allowing selection of virtually any isolated output voltage. The device features adjustable current limiting, allowing indirect limiting of secondary-side load currents. The current limit of the MAX13256 is set by an external resistor. An active-low FAULT output asserts when the device detects an overtemperature or overcurrent condition. In addition, the device features a low-power mode to reduce the overall supply current to 0.65mA (typ) when the driver is not in use. The device features an internal oscillator for autonomous operation and an external clock source input to synchronize multiple MAX13256 devices and precisely set the switching frequency. Internal circuitry guarantees a fixed 50% duty cycle to prevent DC current flow through the transformer, regardless of which clock source is used. The device is available in a small 10-pin (3mm x 3mm) TDFN package and is specified over the -40°C to +125°C automotive temperature range.

Where to Buy

Prices starting from US$131.88

Distributor Stock
Logo for Farnell
Farnell
from US$131.88
3
in stock
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Logo for Newark Electronics
Newark Electronics
from US$136.84
3
in stock
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Logo for element14
element14
from US$140.41
3
in stock
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Features

Simple, Flexible Design 8V to 36V Supply Range Up to 90% Efficiency Provides Up to 10W to the Transformer Undervoltage Lockout 2.5V to 5V Compatible Logic Interface Internal or External Clock Source Adjustable Overcurrent Threshold
8V to 36V Supply Range
Up to 90% Efficiency
Provides Up to 10W to the Transformer
Undervoltage Lockout
2.5V to 5V Compatible Logic Interface
Internal or External Clock Source
Adjustable Overcurrent Threshold
Integrated System Protection Fault Detection and Indication Overcurrent Limiting Overtemperature Protection
Fault Detection and Indication
Overcurrent Limiting
Overtemperature Protection
Saves Space on Board Small 10-Pin TDFN Package (3mm x 3mm)
Small 10-Pin TDFN Package (3mm x 3mm)

Specifications

Application (VIN) Industrial (24V)
VIN (V) (min) 8
VIN (V) (max) 36
Driver Output Resistance (Ω) (max) 1.5
Max. IOUT (A) 0.3
Topology Full-Bridge
Switching Frequency (kHz) 425
IQ (mA) (max) 9
Package/Pins TDFN-CU/10
Oper. Temp. (°C) -40 to +125
BudgetaryPrice (See Notes) 3.25


MAXREFDES9# Development Boards & Evaluation Kits by Analog Devices

REF DESIGN BOARD ISOLATED POWER SUPPLY

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Silicon Manufacturer Maxim Integrated Products
Silicon Core Number MAX13256 MAX1659 MAX668
Kit Application Type Power Management
Application Sub Type Power Supply
Core Architecture -
Core Sub-Architecture -
Silicon Family Name -
Kit Contents Oceanside Ref Design Board
Product Range -
SVHC No SVHC (15-Jan-2018)
Features Isolated Power Supply +/-12V or +/-15V O/P H-Bridge Driver Pmod 3.3-15V Supply

Alternative Descriptions

Ref Design Board, Isolated Power Supply | Newark Electronics
REF DESIGN BOARD, ISOLATED POWER SUPPLY | element14

Frequently Asked Questions

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Is the MAXREFDES9# RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including Newark Electronics, element14 and Farnell have stock available or on a lead time for MAXREFDES9# .

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