MFS5600AMBA0ES datasheet(20/111 Pages) NXP

20 / 111 page

NXP Semiconductors

FS5600

Automotive buck regulator and controller with voltage monitors and watchdog timer

Parameter

Symbol

Min

Typ

Max

Unit

Current Limiter-Inductor Peak Current Sense Voltage in CCM (Sense

Resistor 10 mΩ to 20 mΩ) in the reverse direction

VSW2

CSLIM

PWM Switching Frequency Range (Programmable via OTP)

fsw

300

—

2400

kHz

Error Amplifier Transconductance (COMP = 0.9 V)

1.5

2.3

N-Channel MOSFET Gate Drivers

High/ Low Side Driver Pull-up Resistance at Vds = 0.5 V

OTP_SW2_HS_SR[3:2]/OTP_SW2_LS_SR[1:0] = 00

OTP_SW2_HS_SR[3:2]/OTP_SW2_LS_SR[1:0] = 01

OTP_SW2_HS_SR[3:2]/OTP_SW2_LS_SR[1:0] = 10

OTP_SW2_HS_SR[3:2]/OTP_SW2_LS_SR[1:0] = 11

RSW2PUP —

5.6

2.8

1.6

—

Ω

High/ Low Side Driver Pull-Down Resistance at Vds = 0.5 V

OTP_SW2_HS_SR[1:0]/OTP_SW2_LS_SR[1:0] = 00

OTP_SW2_HS_SR[1:0]/OTP_SW2_LS_SR[1:0] = 01

OTP_SW2_HS_SR[1:0]/OTP_SW2_LS_SR[1:0] = 10

OTP_SW2_HS_SR[1:0]/OTP_SW2_LS_SR[1:0] = 11

RSW2PDN —

6.8

3.4

1.7

—

Ω

Discharge Resistance (at the output) during regulator disable

RSW2DIS —

500

—

Ω

EN2 pin rising threshold

EN2RTH

1.4

—

EN2 pin falling threshold

EN2FTH

—

0.95

SW2 monitor over voltage threshold (% of nominal)

—

SW2 monitor under voltage threshold (% of nominal)

—

–15

—

–5

SW2 monitoring hysteresis (measured at mid-point of resistor divider)

—

SW2 monitoring debounce

—

µs

Table 18. SW2 electrical characteristics...continued

12.2 SW2 operation

SW2 is a peak current-mode controller plus driver with external current sense. The driver

is built to drive low Rds(on) N-channel high and low side MOSFETs for low cost and high

efficiency.

12.2.1 SW2 external component selection

Table 19 provides the recommended external components for the SW2 regulator.

Components

Switching frequency < 1 MHz

Switching frequency > 1 MHz

Inductor

4.7 µH

1.5 µH

Output Capacitor

3 x 22 µF to 5 x 22 µF X5R/X7R

Bootstrap Capacitor

0.1 µF

Input Capacitor

2 x 10 µF X5R/X7R

1 x 10 µF X5R/X7R

Table 19. SW2 recommended external components

Choose VDS > 40 V for 12 V automotive applications. At high current (> 8 A), each

MOSFET should be selected in a single package to limit the heat exchange between

HS and LS. Dual MOSFETs in the same package are practical for low and mid current

(< 8 A). When operating at 450 kHz or lower, by choosing low Rds(on) MOSFETs in

FS5600

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 3 — 2 August 2022

20 / 111

MFS5600AMBA0ES Datasheet(PDF) 20 Page - NXP Semiconductors

MFS5600AMBA0ES Datasheet(HTML) 20 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL