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ASL2500SHN Datasheet(PDF) 13 Page - NXP Semiconductors

Part # ASL2500SHN
Description  Two phase boost converter
PDF  39 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

ASL2500SHN Datasheet(HTML) 13 Page - NXP Semiconductors

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ASL2500SHN
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2017. All rights reserved.
Product data sheet
Rev. 3 — 26 October 2017
13 of 39
NXP Semiconductors
ASL2500SHN
Two phase boost converter
8.3 Output voltage programmability
The ASL2500SHN provides the possibility to program the output voltage and output
overvoltage protection of the output via the SPI interface.
8.3.1 Output voltage target programming
The target output voltage can be programmed via the Output voltage registers. As the
ASL2500SHN is a boost converter, the output voltage cannot be lower than the supply
voltage minus the drop of the converter diode (Dx in Figure 4).
Table 16.
Slope compensation configuration, address 0x13h
Bit
Symbol
Description
Value
Function
7:4
Slpcmp2[3:0]
slope
compensation
factor output 2
0x0h
slope compensation factor output 2 = 112 k
0x1h
slope compensation factor output 2 = 84 k
0x2h
slope compensation factor output 2 = 70 k
0x4h
slope compensation factor output 2 = 56 k
0x8h
slope compensation factor output 2 = 28 k
3:0
Slpcmp1[3:0]
slope
compensation
factor output 1
0x0h
slope compensation factor output 1 = 112 k
0x1h
slope compensation factor output 1 = 84 k
0x2h
slope compensation factor output 1 = 70 k
0x4h
slope compensation factor output 1 = 56 k
0x8h
slope compensation factor output 1 = 28 k
Table 17.
Current sense slope resistor configuration, address 0x14h
Bit
Symbol
Description
Value
Function
7:4
3:2
Slpr2[1:0]
slope resistor
configuration
for gate driver 2
0x0h
2'b00 - 250
0x1h
2'b01 - 500
0x2h
2'b10 - 1000
0x3h
2'b11 - 1500
1:0
Slpr1[1:0]
slope resistor
configuration
for gate driver 1
0x0h
2'b00 - 250
0x1h
2'b01 - 500
0x2h
2'b10 - 1000
0x3h
2'b11 - 1500
Table 18.
Output voltage 1 register, address 0x03h
Bit
Symbol
Description
Value
Function
7:0
V_Vout_1[7:0]
target voltage
output 1
0x00h
output 1 is turned off
...
target voltage output 1
= 0.3606 * V_Vout_1[7:0]
0xFFh
maximum target output voltage = 90 V



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