TLF51801ELV Datasheet, PDF (14/29 Pages) Infineon Technologies AG – 10 A synchronous DC/DC Step-Down Controller

TLF51801ELV
Regulator
5.6
Electrical Characteristics
Electrical Characteristics:
V_S = 6.0 V to 40 V, T_j = -40°C to +150°C, all voltages with respect to ground (unless otherwise specified)
Pos. Parameter
Symbol
Limit Values
Unit Conditions
Min. Typ. Max.
5.6.1 Output voltage
5.6.2 Output overvoltage threshold
V_FB
V_FB,OV
1.176 1.200 1.224 V
1.05 x 1.1 x 1.15 x V
V_FB
V_FB
V_FB
V_EN = 12V;
I_CC < 10A
V_FB increasing;
V_COMP = 3V;
Monitor LG low to high
5.6.3
5.6.4
5.6.5
5.6.6
5.6.7
Output overvoltage threshold
hysteresis
V_FB,OV,hyst 0.02 x 0.05 x 0.08 x V
V_FB
V_FB
V_FB
FB input current
I_FB
-1
-0.1 0
µA
Error amplifier, gain
gm_EA
0.8 1.2 1.6 mS
Error amplifier, output resistance R_EA,OUT 1.0 –
–
MΩ
Error amplifier, ramp amplitude, V_Comp,peak 1.0 –
FREQ-mode
to peak,FREQ
1.6 V
–
V_FB = 1.2V
V_FB = 1.2V
V_FB = 1.2V;
V_COMP = 1.2V
V_FB = 1.2V;
FREQ-mode;
f_FREQ = 100 -700kHz;
Monitor LG
5.6.8 Error amplifier, ramp amplitude, V_Comp,peak 0.6 –
SYNC-mode
to peak,SYNC
2.6 V V_FB = 1.2V;
SYNC-mode;
f_SYNC = 350 -700kHz;
Monitor LG
5.6.9 Error amplifier output, source and I_Comp,max 150 280 450
sink current
5.6.10 Comp pin, minimum voltage
V_Comp,min 0.8
–
–
μA Source current:
V_FB = 0.8V, V_COMP= 2.5V;
Sink current:
V_FB = 2.4V, V_COMP= 2.5V
V
V_COMP increasing;
Monitor UG
5.6.11 Bootstrap under voltage lockout V_BTS,off V_BUO –
–
threshold for UG turn-off
+ 3.0
V
V_{BTS_BUO} voltage
decreasing
5.6.12 Bootstrap under voltage lockout, V_BTS,hyst –
hysteresis
300 –
mV –
5.6.13 Bootstrap capacitor discharge
current
I_{BTS_BUO} –
150 –
µA V_{BTS_BUO} = 4.5V
5.6.14
5.6.15
5.6.16
5.6.17
Bootstrap diode forward voltage
Minimum on time Upper Gate
Minimum off time Upper Gate
Soft start ramp
V_DBTS,fwd –
T_UGON,min –
T_UGOFF,min –
t_start
–
5.6.18 Input under voltage shutdown
V_S,off
3.7
threshold
0.8 –
100 –
100 –
512 x –
1/f
–
–
V
I_DBTS = 20mA
ns ¹⁾
ns ¹⁾
µs f = f_FREQ, FREQ-mode;
f = f_SYNC, SYNC-mode
V V_S decreasing
Data sheet
14
Rev. 1.0.1, 2013-04-15