PWS745

Supply voltage range, V_CC (see Note 1)  . . . . . . . . . . . . . . . . . . . . . . 0.3 to 14 V
Input voltage range: BOOT to DRVGND (high-side driver ON) . . . . . . . 0.3 to 30 V
BOOT to HIGHDRV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 to 15 V
BOOT to BOOTLO .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 to 15 V
INHIBIT, LODRV  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 to 7.3 V
PWRGD, OCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 to 7 V
LOHIB, LOSENSE, IOUTLO, HISENSE  . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 to 14 V
VSENSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 to 5 V
Voltage difference between ANAGND and DRVGND .. . . . . . . . . . . . . . . . . . . ±0.5 V
Output current, VREFB  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 mA
Short circuit duration, DRV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous
Continuous total power dissipation  . . . . . . . . . . . . . . See Dissipation Rating Table
Operating junction temperature range, T_J.. . . . . . . . . . . . . . . . . . . . . . 0 to 125
Storage temperature range, T_stg   . . . . . . . . . . . . . . . . . . . . . . . . . . 65to 150
Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds. . . 260
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: Unless otherwise specified, all voltages are with respect to ANAGND.

The PWS745 is a set of components useful in the construction of single or multi-channel isolated DC/DC converters. By themselves, or in combination with the PWS740 and PWS750 families of components, they allow compact, optimal, and low-cost solutions to many power supply problems.

The PWS745-1 DIP oscillator/driver can be used to drive up to eight channels of independently isolated power. The switching MOSFETs are built into the driver to allow simple low-cost assembly of the multichannel converter. The PWS745-1 also is capable of operating at 5VDC and can be easily synchronized with TTL level signals. While offering the user an alternative to the TO-3 package of the PWS740, the PWS745-1 also allows the user to select varying levels of power, isolation voltage, mounting technology and system configuration by choosing among the several component families. For example, the PWS745-1 can directly drive the PWS740, PWS745, or PWS750 transformers. It also can drive the FETs of a PWS750 distributed power system. The operating frequency is compatible with the ISO120 family of isolation amplifiers and is capable of multi-channel synchronized operation to eliminate troublesome beat frequencies.

The PWS745-2 is a 15V to ±15V output version, while the PWS745-4 is the 5V to ±15V output version. The PWS740-3 high-speed bridge provides a convenient
rectifier for the selected transformer output.