CISSOID CHT-MAGMA-CSOIC28-T

Product Info

General Description

MAGMA is a High Temperature Pulse Width Modulation (PWM) Controller with maximum duty cycle up to 90%. It operates at constant frequency, adjustable from 50KHz up to 500KHz.

MAGMA can operate with input voltages from 6 to 30V. It also features an internal voltage reference, input feed forward compensation making it less sensitive to input voltage variations, and a soft start activated whenever MAGMA comes out of stand-by or the output is enabled.

An under-voltage lockout function maintains the PWM output low until the controller has sufficient supply voltage for proper operation. A “power good” comparator returns a “good” signal when the DC-DC converter output voltage has reached a programmable threshold. A synchronization pin can be driven by an external clock while the internal clock is available on CKOUT pin.

Features

Voltage Mode PWM Controller

Adjustable Max Duty Cycle up to 90%

Constant Switching Frequency adjustable between 50KHz to 500KHz

Input Voltage from 6V to 30V

Input Voltage Feed Forward Compensation

On-chip 2.5V Reference Voltage

Stand-by Mode

Under Voltage Lockout

Soft-Start Capability

Synchronization Capability

Power Good Flag

Output Enable

Validated at 225°C for 30000 hours (CDIL28)/20000 hours(CSOIC28) (and still on-going)

Applications

DC-DC Converters in Oil&Gas, Industrial, Aerospace & Automotive.