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TPS5124 Fiches technique(PDF) 5 Page - Texas Instruments |
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TPS5124 Fiches technique(HTML) 5 Page - Texas Instruments |
5 / 18 page TPS5124 SLUS571 − SEPTEMBER 2003 5 www.ti.com TERMINAL FUNCTIONS TERMINAL I/O DESCRIPTION NAME NO. I/O DESCRIPTION CT 5 I/O External capacitor from CT to GND adjusts frequency of the triangle oscillator. FB1 2 O Feedback output of SBRC−Channel 1 error amplifier. FB2 14 O Feedback output of SBRC−Channel 2 error amplifier. GND 7 − Signal GND. INV1 1 I Inverting inputs of Channel 1 error amplifier and OVP1/UVP1 comparator. INV2 15 I Inverting inputs of Channel 2 error amplifier and OVP2/UVP2 comparator. LH1 30 I/O Bootstrap capacitor connection for Channel 1 high-side gate driver. LH2 16 I/O Bootstrap capacitor connection for Channel 2 high-side gate driver. LL1 28 I/O CH1 high-side gate driving return. Connect this pin to the junction of the high-side and low-side MOSFETs for floating drive configuration. This pin is also an input terminal for current comparator. LL2 18 I/O CH2 high-side gate driving return. Connect this pin to the junction of the high-side and low-side MOSFETs for floating drive configuration. This pin is also an input terminal for current comparator. NC 4,6,12 − No connection. OUT1_D 27 O Gate drive output for Channel 1 low-side MOSFETs. OUT2_D 19 O Gate drive output for Channel 2 low-side MOSFETs. OUT1_U 29 O Gate drive output for Channel 1 high-side MOSFETs. OUT2_U 17 O Gate drive output for Channel 2 high-side MOSFETs. OUTGND1 26 − Ground for Channel 1 MOSFET drivers. OUTGND2 20 − Ground for Channel 2 MOSFET drivers. REF 8 O 0.85-V reference voltage output. This 0.85-V reference voltage is used to set the output voltage and the refer- ence for the overvoltage and undervoltage protections. This reference voltage is dropped down from the inter- nal 5-V regulator. SCP 11 I/O Fault latch timer pin. An external capacitor connected between SCP and GND sets SCP enable time up. SS1 3 I/O Soft start control for Channel 1. Connect an external capacitor between this pin and GND to specify SOFT- START time. SS2 13 I/O Soft start control for Channel 2. Connect an external capacitor between this pin and GND to specify SOFT- START time. STBY1 9 I Standby control input for Channel 1. It can be switched into standby mode by grounding the STBY1 pin. STBY2 10 I Standby control input for Channel 2. It can be switched into standby mode by grounding the STBY2 pin. TRIP1 25 I External resistor connection for Channel 1 output current protection control. TRIP2 23 I External resistor connection for Channel 2 output current protection control. VCC 24 I Supply voltage input VLSD 21 I Supply voltage input for low side driver. Typically connected to VREF5 with R-C filter when VVCC is between 6.5V and 15V and connected to VCC with filter when VVCC is between 4.5 V and 5.5 V. VREF5 22 O 5V linear regulator output. When VVCC is between 4.5V and 5.5V should be connected to VCC. |
Numéro de pièce similaire - TPS5124_15 |
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Description similaire - TPS5124_15 |
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