米6体育平台手机版

ZHCSQI6C May 2022 – October 2023 TPS62870-Q1 , TPS62871-Q1 , TPS62872-Q1 , TPS62873-Q1

PRODUCTION DATA

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机械数据 (封装 | 引脚)

RXS|16
- MPQF606D

散热焊盘机械数据 (封装 | 引脚)

订购信息

9.3.6.2 Output Voltage Setpoint

Together with the selected range, the VSET[7:0] bits in the VSET register control the output voltage setpoint of the device (see Table 9-4).

Table 9-4 Start-Up Voltage Settings

VRANGE[1:0]	Output Voltage Setpoint
0b00	0.4 V + VSET[7:0] × 1.25 mV
0b01	0.4 V + VSET[7:0] × 2.5 mV
0b10	0.4 V + VSET[7:0] × 5 mV
0b11	0.8 V + VSET[7:0] × 10 mV

During initialization, the device reads the state of the VSEL pin and selects the default output voltage according to Table 9-5. Note that the VSEL pin also selects the I²C target address of the device (see Table 9-10).

Table 9-5 Default Output Voltage Setpoints

VSEL Pin⁽¹⁾	Device Number	VSET[7:0]	Output Voltage Setpoint
6.2 kΩ to GND	TPS6287x-Q1	0x5A	850 mV
	TPS6287xY0-Q1	0x14	500 mV
	TPS6287xY1-Q1	0x50	800 mV
	TPS6287xY2-Q1	0x64	1800 mV
	TPS6287xY3-Q1	0x52	810 mV
	TPS6287xY4-Q1	0x5A	850 mV
	TPS6287xY5-Q1	0x1E	1100 mV
	TPS6287xY6-Q1	0x28	1200 mV
	TPS6287xN0-Q1	0x14	500 mV
	TPS6287xN1-Q1	0x50	800 mV
	TPS6287xN2-Q1	0x64	1800 mV
	TPS6287xN3-Q1	0x78	1000 mV
Short Circuit to GND	All, Except TPS6287xx2-Q1, TPS6287xY5-Q1, TPS6287xY6-Q1	0x46	750 mV
Short Circuit to GND	TPS6287xx2-Q1, TPS6287xY5-Q1, TPS6287xY6-Q1	0x46	1500 mV
Short Circuit to V_IN	All, Except TPS6287xx2-Q1 , TPS6287xY5-Q1, TPS6287xY6-Q1	0x5F	875 mV
Short Circuit to V_IN	TPS6287xx2-Q1, TPS6287xY5-Q1, TPS6287xY6-Q1	0x5F	1750 mV
47 kΩ to V_IN	TPS6287x-Q1	0x78	1000 mV
	TPS6287xY0-Q1	0x82	1050 mV
	TPS6287xY1-Q1	0x50	800 mV
	TPS6287xY2-Q1	0xFA	3300 mV
	TPS6287xY3-Q1	0x78	1000 mV
	TPS6287xY4-Q1	0x5A	850 mV
	TPS6287xY5-Q1	0xFA	3300 mV
	TPS6287xY6-Q1	0xAA	2500 mV
	TPS6287xN0-Q1	0x82	1050 mV
	TPS6287xN1-Q1	0x58	840 mV
	TPS6287xN2-Q1	0xFA	3300 mV
	TPS6287xN3-Q1	0x8C	1100 mV

(1) For a reliable voltage setting, ensure there is no stray current path connected to the VSEL pin and that the parasitic capacitance between the VSEL pin and GND is less than 100 pF.

If the user programs new output voltage setpoint (VOUT[7:0]), output voltage range (VRANGE[1:0]), or soft-start time (SSTIME[1:0]) settings when the device has already begun its soft-start sequence, the device ignores the new values until the soft-start sequence is complete. If the user changes the value of VSET[7:0] during soft start, the device first ramps to the value that VSET[7:0] had when the soft-start sequence began. Then, when soft start is complete, ramps up or down to the new value.

If the user changes VOUT[7:0], VRAMP[1:0], or SSTIME[1:0] while EN is low, the device uses the new values the next time the user enables it.

During start-up, the output voltage ramps up to the target value set by the VSEL pin before ramping up or down to any new value programmed to the device over the I²C interface.