DRV10987: Tuning Issues from DRV10983 to DRV10987

Part Number:DRV10987

Already my motor is running in DRV10983, Now i am changing the chip from DRV10983  to DRV10987S. All the motor parameters i matched from DRV10983 to DRV10987, some of the parameters are new in 987. Currently my motor is running in DRV10987S only VCC below 22VDC and current  490mA without load. In DRV10983 it will work at 24V/15mA without load. DRV10987 also getting warm up at without load condition itself(0.490A). If i read the 0x00 register data will be (0x2001).

Following are my motor parameters:-

        i2c_writen(0x90,0x003E);
        i2c_writen(0x91,0x5E3A);
        i2c_writen(0x92,0x1CDC);
        i2c_writen(0x93,0x368F); 
        i2c_writen(0x94,0x3F0F); 
        i2c_writen(0x95,0xA1F7); 
        i2c_writen(0x96,0x2B6A); 

Motor Parameters:-

Motor Voltage:- 24VDC

Rph: 1.0864

kt: 412.16

3phase BLDC Motor with 16 Poles

New Parameter which are in DRV10987 compare to DRV10983:-

1. Spread Spectrum Modulation

2. Duty Cycle Limit

3. Slew Rate

Please help me to solve these problems...........