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ZHCSIO9A August 2018 – June 2021 TPSM831D31

PRODUCTION DATA

封裝選項

機械數據 (封裝 | 引腳)

MOA|28

散熱焊盤機械數據 (封裝 | 引腳)

訂購信息

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7.5.8 Loop Compensation

The TPSM831D31 provides several options for tuning the output voltage feedback and response to transients. These may be configured by programming the MFR_SPECIFIC_07, VOUT_DROOP, and MFR_SPECIFIC_14. Several such parameters may be configured through these commands:

DC Load Line - Selects the DC shift in output voltage corresponding to increased output current. The DC load line affects both the final value the output voltage settles to, as well as the settling time. Use the VOUT_DROOP command to select the DC load line.
Integration Time Constant - In order to maintain DC accuracy, the control loop includes an integration stage. Use MFR_SPECIFIC_07 to select the integration time constant.
Integration Path Gain - The gain of the integration and AC paths may be selected independently. The AC and DC gains both affect the small-signal bandwidth of the converter. Use MFR_SPECIFIC_07 to select the integration path gain.
AC Load Line - Selects the AC response to output voltage error. The AC load line affects the settling and response time following a load transient event. MFR_SPECIFIC_07 Use the MFR_SPECIFIC_07 command to select the AC load line.
AC Path Gain - The gain of the integration and AC paths may be selected independently. The AC and DC gains both affect the small-signal bandwidth of the converter. Use MFR_SPECIFIC_07 to select the AC path gain.
Ramp Amplitude - Smaller ramp settings result in faster response, but may also lead to increased frequency jitter. Likewise, large ramp settings result in lower frequency jitter, but may be slightly slower to respond to changing conditions. The ramp setting also affects the small-signal bandwidth of the converter. Use MFR_SPECIFIC_14 to select the ramp high setting.

Table 7-19 Dynamic Integration and Undershoot Reduction (T_A = 25°C)

PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNIT
V_DYN	Dynamic integration voltage setting	MFR_SPEC_12<10:8> = 000b;	90	100	116	mV
		MFR_SPEC_12<10:8> = 001b;	135	150	175	mV
		MFR_SPEC_12<10:8> = 010b;	175	200	230	mV
		MFR_SPEC_12<10:8> = 011b;	225	250	285	mV
		MFR_SPEC_12<10:8> = 100b;	270	300	345	mV
		MFR_SPEC_12<10:8> = 101b;	315	350	400	mV
		MFR_SPEC_12<10:8> = 110b;	360	400	455	mV
		MFR_SPEC_12<10:8> = 111b;		OFF		mV
t_DINT	Dynamic integration time constant	MFR_SPEC_12<7:4> = 0000b;		1		μs
		MFR_SPEC_12<7:4> = 0001b;		2		μs
		MFR_SPEC_12<7:4> = 0010b;		3		μs
		MFR_SPEC_12<7:4> = 0011b;		4		μs
		MFR_SPEC_12<7:4> = 0100b;		5		μs
		MFR_SPEC_12<7:4> = 0101b;		6		μs
		MFR_SPEC_12<7:4> = 0110b;		7		μs
		MFR_SPEC_12<7:4> = 0111b;		8		μs
		MFR_SPEC_12<7:4> = 1000b;		12		μs
		MFR_SPEC_12<7:4> = 1001b;		13		μs
		MFR_SPEC_12<7:4> = 1010b;		14		μs
		MFR_SPEC_12<7:4> = 1011b;		15		μs
		MFR_SPEC_12<7:4> = 1100b;		16		μs
		MFR_SPEC_12<7:4> = 1101b;		17		μs
		MFR_SPEC_12<7:4> = 1110b;		18		μs
		MFR_SPEC_12<7:4> = 1111b;		19		μs
V_USR2	USR level 2 voltage setting	MFR_SPEC_09<14:12> = 000b;	120	140	160	mV
		MFR_SPEC_09<14:12> = 001b;	155	180	205	mV
		MFR_SPEC_09<14:12> = 010b;	190	220	245	mV
		MFR_SPEC_09<14:12> = 011b;	230	260	290	mV
		MFR_SPEC_09<14:12> = 100b;	265	300	335	mV
		MFR_SPEC_09<14:12> = 101b;	300	340	375	mV
		MFR_SPEC_09<14:12> = 110b;	335	380	420	mV
		MFR_SPEC_09<14:12> = 111b;		OFF		mV
V_USR1	USR level 1 voltage setting	MFR_SPEC_09<2:0> = 000b;	70	90	110	mV
		MFR_SPEC_09<2:0> = 001b;	100	120	140	mV
		MFR_SPEC_09<2:0> = 010b;	130	150	170	mV
		MFR_SPEC_09<2:0> = 011b;	160	180	205	mV
		MFR_SPEC_09<2:0> = 100b;	185	210	240	mV
		MFR_SPEC_09<2:0> = 101b;	215	240	270	mV
		MFR_SPEC_09<2:0> = 110b;	240	270	305	mV
		MFR_SPEC_09<2:0> = 111b;		OFF		mV
PH_USR1	Maximum phase added in USR level 1	MFR_SPEC_09<5> = 0b;		3		phases
PH_USR1	Maximum phase added in USR level 1	MFR_SPEC_09<5> = 1b;		4		phases
V_OUSRHYS	Dynamic integration/USR voltage hysteresis	MFR_SPEC_09<4:3> = 00b;	2	5	9	mV
		MFR_SPEC_09<4:3> = 01b;	5	10	15	mV
		MFR_SPEC_09<4:3> = 10b;	10	15	20	mV
		MFR_SPEC_09<4:3> = 11b;	15	20	25	mV

Table 7-20 Ramp Selections

PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNIT
V_RAMP	RAMP Setting	MFR_SPEC_14<2:0> = 000b	30	40	55	mV
		MFR_SPEC_14<2:0> = 001b	70	80	95	mV
		MFR_SPEC_14<2:0> = 010b	110	120	135	mV
		MFR_SPEC_14<2:0> = 011b	150	160	175	mV
		MFR_SPEC_14<2:0> = 100b	190	200	215	mV
		MFR_SPEC_14<2:0> = 101b	230	240	255	mV
		MFR_SPEC_14<2:0> = 110b	270	280	300	mV
		MFR_SPEC_14<2:0> = 111b	305	320	335	mV