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STDRIVE102HTR 数据表(PDF) 40 Page - STMicroelectronics |
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STDRIVE102HTR 数据表(HTML) 40 Page - STMicroelectronics |
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40 / 56 page  Figure 28. STDRIVE102BH typical application example VDD GHS1 GHS2 GHS3 GLS1 GLS2 GLS3 RSh OUT3 OUT2 OUT1 SLS3 SLS2 SLS1 GHSx OUTx GLSx OA_INxP SLSx OA_INxN OA_Ox nSTBY INH3/IN3 INH2/IN2 INH1/IN1 INL3/EN3 INL2/EN2 INL1/EN1 x3 x3 VDD CREF C_INx VBOOT VM EN nFAULT FLAG VDD VDD AGND GND VS VCC REGIN_3V3 VDD PCAP NCAP VDD IGATE TCC VDD MCU Q1 Q4 Q2 Q3 Q5 Q6 VM VM CBOOT CFLY CVDD VDD CVCC VCC CLG CSUPPLY CBRIDGE CBULK Rop 2Rf Rop Rcp Rc1 Rc2 Ccref RIG1 RIG2 Rtc2 Ctc CIG VDSTH Rvds1 Rvds2 Cvds REN CEN RFLAG VDD Rtc1 Motor x3 x3 x3 x3 x3 x3 STDRIVE102BH CM RSh RSh 2Rf Rf To control unit Ccp CBRIDGE CBRIDGE 6.2 3-phase brushless motor application with single shunt current sensing based on STDRIVE102H Figure 29 shows an application example using STDRIVE102H to drive a 3-phase motor with single shunt configuration. The list of components is summarized in Table 18. Values reported in Table 18 refer to a generic example. The actual components' values must be chosen in order to fit the specific application requirements. The value of the resistors on the IGATE, TCC and VDSTH pins must be sized according to the specific power stage. The values of the components connected to the operational amplifier and the shunt resistor must be sized according to the current rating of the application. Table 18. STDRIVE102H list of components Value CBRIDGE 220 nF (to be tuned according to current rating of the power stage) CBULK 470 µF (to be tuned according to current rating of the power stage) CM 1 µF low ESR to be placed close to the driver Rsh According to the current rating of the application (for example 2 mΩ) Rop, Rf According to op amp gain (for example 1 kΩ, 15 kΩ: Gain = 15) Rcp 4.7 kΩ Rc1, Rc2 According to the CREF threshold (for example 100 kΩ, 7.5 kΩ: VCREF = 230 mV) Ccp 10 nF / 16 V NTC 10 kΩ at 25 °C Rn1, Rn2 According to temperature threshold (for example Rn1 = 910 Ω, Rn2 = 120 Ω) Cn 220 nF RIG1 , RIG2 1% precision, values according to drivers’ current selection (for example RIG1 = 30 kΩ, RIG2 = 15 kΩ; see Figure 16) CIG 10 nF /16 V STDRIVE102BH, STDRIVE102H Application examples DS14545 - Rev 1 page 40/56 |
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