Datasheet

Operating Instructions List

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Figure 2. Top View

Table 1. Typical Jumper Connections

JP1 JP2 JP3 FS2 FS1 FS0

OFF OFF ON ON ON ON

Power Supply

• Ensure that all external power sources are set to OFF.

• Connect a 4.5-V to 26-V power supply to (PVCC) and (GND), taking care to observe proper polarity.

Inputs and Outputs

• Connect a dc control voltage to (IN+) ranging from 0.5-V to 5.5-V. Alternately, the terminal (IN+) can be

held to a fixed voltage with a resistor voltage divider, as shown in the schematic. A dc control voltage

applied to IN- of the same magnitude provides 0-V output from OUT+ to OUT–.

• Connect a load across (OUT+) and (OUT–). The polarity of the connection depends on the operation

of the dc control voltage. As the voltage at IN+ becomes greater than the voltage at IN–, the voltage at

OUT+ increases, causing current to flow from OUT+ to OUT–. Similarly, as the voltage at IN+

decreases lower than IN–, the voltage at OUT– increases, causing current to flow from OUT– to OUT+.

Evaluation Module Jumpers

• Jumper JP1 (HI-Z) should be OFF for normal operation. When JP1 is ON, the output of DRV595 is

disabled. This jumper is for fast disabling or enabling of outputs.

• Jumper JP2 (MODSEL) gives the option of running in either 1SPW modulation or BD modulation.

When JP1 is ON, the DRV595 operates on 1SPW mode. The 1SPW mode alters the normal

modulation scheme in order to achieve higher efficiency with a slight penalty in ripple current and more

attenuation required in the output filter selection. When JP1 is OFF, the DRV595 operates in BD mode.

In BD mode, the device allows for smaller ripple current through the TEC load.

DRV595 EVM SLAU479–December 2012

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