Don't think so. Here's an example of ramping tables from NarsilM for a FET+1 config:
//---------------------------------------------------------------------
// Standard FET+1 2 channel modes
//---------------------------------------------------------------------
//#define RAMP_SIZE 130 // for using TURBO_LEVEL_SUPPORT
#define RAMP_SIZE 150
#define FET_START_LVL 66
#define TIMED_STEPDOWN_MIN 115 // min level in ramping the timed stepdown will engage,
// level 115 = 110 PWM, this is ~43% (for 350's)
#define TIMED_STEPDOWN_SET 102 // the level timed stepdown will set,
// level 102 = 72 PWM, this is ~32% (for 350's)
// For FET+1: FET and one 350 mA 7135 (tested/verified to be smooth):
// level_calc.py 2 150 7135 3 0.3 150 FET 1 1 1500
PROGMEM const byte ramp_7135[] = {
3,3,3,4,4,4,5,5, 6,6,7,8,9,10,11,12,
13,14,15,17,18,20,22,24, 26,28,30,33,35,38,41,44,
47,51,54,58,62,66,70,74, 79,83,88,93,99,104,110,116,
122,128,135,142,149,156,164,172, 180,188,196,205,214,223,233,243, // 49-64
253,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,
255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,
255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,
255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,
255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,
255,255,255,255,255,0 // 145-150
};
PROGMEM const byte ramp_FET[] = {
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, // 49-64
0,2,3,4,5,7,8,9, 11,12,14,15,17,18,20,22,
23,25,27,29,30,32,34,36, 38,40,42,44,47,49,51,53,
56,58,60,63,66,68,71,73, 76,79,82,85,87,90,93,96, // 97-112
100,103,106,109,113,116,119,123, 126,130,134,137,141,145,149,153, // 113-128
157,161,165,169,173,178,182,186, 191,196,200,205,210,214,219,224, // 129-144
229,234,239,244,250,255 // 145-150
};
level_calc.py noted above is the Python script. The values in the tables are the PWM values, and the index into the tables is the ramping level. When we ramp up, the index gets bumped up by 1 every 16 msecs.