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IPM04S0A0R10FA Datasheet(PDF) 9 Page - Delta Electronics, Inc. |
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IPM04S0A0R10FA Datasheet(HTML) 9 Page - Delta Electronics, Inc. |
9 / 15 page DS_IPM12S0A008_03202007 9 FEATURES DESCRIPTIONS (CON.) Output Voltage Programming The output voltage of IPM can be programmed to any voltage between 0.8Vdc and 5Vdc by connecting one resistor (shown as Rtrim in Figure 28, 29) between the TRIM and GND pins of the module to trim up (0.9V ~ 5V) and between the Trim and +Output to trim down (0.8V ~ 0.9V). Without this external resistor, the output voltage of the module is 0.9 Vdc. To calculate the value of the resistor Rtrim for a particular output voltage Vo, please use the following equation: Trim up Rtrim = 3.746 - 0.261 (K Ω ) Vout –0.9 Trim Down Rtrim = 1.070 - 5.612 (K Ω ) 0.9 - Vout Rtrim is the external resistor in K Ω Vout is the desired output voltage For example: to program the output voltage of the IPM module to 3.3Vdc, Rtrim is calculated as follows: Rtrim = 3.746 - 0.261 (K Ω ) 3.3 –0.9 Rtrim = 1.300 K Ω IPM can also be programmed by applying a voltage between the TRIM and GND pins (Figure 30). The following equation can be used to determine the value of Vtrim needed for a desired output voltage Vo: Vtrim = 0.7439 – 0.0488Vo Vtrim is the external voltage in V Vo is the desired output voltage For example, to program the output voltage of a IPM module to 3.3 Vdc, Vtrim is calculated as follows Vtrim = 0.7439 – 0.0488 x 3.3 Vtrim = 0.5829V Figure 28: Trim up Circuit configuration for programming output voltage using an external resistor Rtrim Load Vout Trim GND Figure 29: Trim down Circuit configuration for programming output voltage using an external resistor Figure 30: Circuit configuration for programming output voltage using external voltage source |
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